aboutsummaryrefslogtreecommitdiff
path: root/network/squid/squid.conf
blob: 804bdc8de8d884235a852b7e4d88f614bd6ac846 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
#	WELCOME TO SQUID 3.1.20
#	----------------------------
#	
#	This is the documentation for the Squid configuration file.
#	This documentation can also be found online at:
#		http://www.squid-cache.org/Doc/config/
#	
#	You may wish to look at the Squid home page and wiki for the
#	FAQ and other documentation:
#		http://www.squid-cache.org/
#		http://wiki.squid-cache.org/SquidFaq
#		http://wiki.squid-cache.org/ConfigExamples
#	
#	This documentation shows what the defaults for various directives
#	happen to be.  If you don't need to change the default, you should
#	leave the line out of your squid.conf in most cases.
#	
#	In some cases "none" refers to no default setting at all,
#	while in other cases it refers to the value of the option
#	- the comments for that keyword indicate if this is the case.
#

#  Configuration options can be included using the "include" directive.
#  Include takes a list of files to include. Quoting and wildcards are
#  supported.
#
#  For example,
#
#  include /path/to/included/file/squid.acl.config
#
#  Includes can be nested up to a hard-coded depth of 16 levels.
#  This arbitrary restriction is to prevent recursive include references
#  from causing Squid entering an infinite loop whilst trying to load
#  configuration files.

#  TAG: dns_testnames
#	Remove this line. DNS is no longer tested on startup.
#Default:
# none

#  TAG: extension_methods
#	Remove this line. All valid methods for HTTP are accepted by default.
#Default:
# none

#  TAG: incoming_rate
#Default:
# none

#  TAG: server_http11
#	Remove this line. HTTP/1.1 is supported by default.
#Default:
# none

#  TAG: upgrade_http0.9
#	Remove this line. ICY/1.0 streaming protocol is supported by default.
#Default:
# none

#  TAG: zph_local
#	Alter these entries. Use the qos_flows directive instead.
#Default:
# none

#  TAG: header_access
#	Since squid-3.0 replace with request_header_access or reply_header_access
#	depending on whether you wish to match client requests or server replies.
#Default:
# none

#  TAG: httpd_accel_no_pmtu_disc
#	Since squid-3.0 use the 'disable-pmtu-discovery' flag on http_port instead.
#Default:
# none

# OPTIONS FOR AUTHENTICATION
# -----------------------------------------------------------------------------

#  TAG: auth_param
#	This is used to define parameters for the various authentication
#	schemes supported by Squid.
#
#	format: auth_param scheme parameter [setting]
#
#	The order in which authentication schemes are presented to the client is
#	dependent on the order the scheme first appears in config file. IE
#	has a bug (it's not RFC 2617 compliant) in that it will use the basic
#	scheme if basic is the first entry presented, even if more secure
#	schemes are presented. For now use the order in the recommended
#	settings section below. If other browsers have difficulties (don't
#	recognize the schemes offered even if you are using basic) either
#	put basic first, or disable the other schemes (by commenting out their
#	program entry).
#
#	Once an authentication scheme is fully configured, it can only be
#	shutdown by shutting squid down and restarting. Changes can be made on
#	the fly and activated with a reconfigure. I.E. You can change to a
#	different helper, but not unconfigure the helper completely.
#
#	Please note that while this directive defines how Squid processes
#	authentication it does not automatically activate authentication.
#	To use authentication you must in addition make use of ACLs based
#	on login name in http_access (proxy_auth, proxy_auth_regex or
#	external with %LOGIN used in the format tag). The browser will be
#	challenged for authentication on the first such acl encountered
#	in http_access processing and will also be re-challenged for new
#	login credentials if the request is being denied by a proxy_auth
#	type acl.
#
#	WARNING: authentication can't be used in a transparently intercepting
#	proxy as the client then thinks it is talking to an origin server and
#	not the proxy. This is a limitation of bending the TCP/IP protocol to
#	transparently intercepting port 80, not a limitation in Squid.
#	Ports flagged 'transparent', 'intercept', or 'tproxy' have
#	authentication disabled.
#
#	=== Parameters for the basic scheme follow. ===
#
#	"program" cmdline
#	Specify the command for the external authenticator.  Such a program
#	reads a line containing "username password" and replies "OK" or
#	"ERR" in an endless loop. "ERR" responses may optionally be followed
#	by a error description available as %m in the returned error page.
#	If you use an authenticator, make sure you have 1 acl of type
#	proxy_auth.
#
#	By default, the basic authentication scheme is not used unless a
#	program is specified.
#
#	If you want to use the traditional NCSA proxy authentication, set
#	this line to something like
#
#	auth_param basic program /usr/libexec/ncsa_auth /usr/etc/passwd
#
#	"utf8" on|off
#	HTTP uses iso-latin-1 as characterset, while some authentication
#	backends such as LDAP expects UTF-8. If this is set to on Squid will
#	translate the HTTP iso-latin-1 charset to UTF-8 before sending the
#	username & password to the helper.
#
#	"children" numberofchildren
#	The number of authenticator processes to spawn. If you start too few
#	Squid will have to wait for them to process a backlog of credential
#	verifications, slowing it down. When password verifications are
#	done via a (slow) network you are likely to need lots of
#	authenticator processes.
#	auth_param basic children 5
#
#	"concurrency" concurrency
#	The number of concurrent requests the helper can process.
#	The default of 0 is used for helpers who only supports
#	one request at a time. Setting this changes the protocol used to
#	include a channel number first on the request/response line, allowing
#	multiple requests to be sent to the same helper in parallell without
#	wating for the response.
#	Must not be set unless it's known the helper supports this.
#	auth_param basic concurrency 0
#
#	"realm" realmstring
#	Specifies the realm name which is to be reported to the
#	client for the basic proxy authentication scheme (part of
#	the text the user will see when prompted their username and
#	password). There is no default.
#	auth_param basic realm Squid proxy-caching web server
#
#	"credentialsttl" timetolive
#	Specifies how long squid assumes an externally validated
#	username:password pair is valid for - in other words how
#	often the helper program is called for that user. Set this
#	low to force revalidation with short lived passwords.  Note
#	setting this high does not impact your susceptibility
#	to replay attacks unless you are using an one-time password
#	system (such as SecureID).  If you are using such a system,
#	you will be vulnerable to replay attacks unless you also
#	use the max_user_ip ACL in an http_access rule.
#
#	"casesensitive" on|off
#	Specifies if usernames are case sensitive. Most user databases are
#	case insensitive allowing the same username to be spelled using both
#	lower and upper case letters, but some are case sensitive. This
#	makes a big difference for user_max_ip ACL processing and similar.
#	auth_param basic casesensitive off
#
#	=== Parameters for the digest scheme follow ===
#
#	"program" cmdline
#	Specify the command for the external authenticator.  Such
#	a program reads a line containing "username":"realm" and
#	replies with the appropriate H(A1) value hex encoded or
#	ERR if the user (or his H(A1) hash) does not exists.
#	See rfc 2616 for the definition of H(A1).
#	"ERR" responses may optionally be followed by a error description
#	available as %m in the returned error page.
#
#	By default, the digest authentication scheme is not used unless a
#	program is specified.
#
#	If you want to use a digest authenticator, set this line to
#	something like
#
#	auth_param digest program /usr/bin/digest_pw_auth /usr/etc/digpass
#
#	"utf8" on|off
#	HTTP uses iso-latin-1 as characterset, while some authentication
#	backends such as LDAP expects UTF-8. If this is set to on Squid will
#	translate the HTTP iso-latin-1 charset to UTF-8 before sending the
#	username & password to the helper.
#
#	"children" numberofchildren
#	The number of authenticator processes to spawn (no default).
#	If you start too few Squid will have to wait for them to
#	process a backlog of H(A1) calculations, slowing it down.
#	When the H(A1) calculations are done via a (slow) network
#	you are likely to need lots of authenticator processes.
#	auth_param digest children 5
#
#	"realm" realmstring
#	Specifies the realm name which is to be reported to the
#	client for the digest proxy authentication scheme (part of
#	the text the user will see when prompted their username and
#	password). There is no default.
#	auth_param digest realm Squid proxy-caching web server
#
#	"nonce_garbage_interval" timeinterval
#	Specifies the interval that nonces that have been issued
#	to client_agent's are checked for validity.
#
#	"nonce_max_duration" timeinterval
#	Specifies the maximum length of time a given nonce will be
#	valid for.
#
#	"nonce_max_count" number
#	Specifies the maximum number of times a given nonce can be
#	used.
#
#	"nonce_strictness" on|off
#	Determines if squid requires strict increment-by-1 behavior
#	for nonce counts, or just incrementing (off - for use when
#	useragents generate nonce counts that occasionally miss 1
#	(ie, 1,2,4,6)). Default off.
#
#	"check_nonce_count" on|off
#	This directive if set to off can disable the nonce count check
#	completely to work around buggy digest qop implementations in
#	certain mainstream browser versions. Default on to check the
#	nonce count to protect from authentication replay attacks.
#
#	"post_workaround" on|off
#	This is a workaround to certain buggy browsers who sends
#	an incorrect request digest in POST requests when reusing
#	the same nonce as acquired earlier on a GET request.
#
#	=== NTLM scheme options follow ===
#
#	"program" cmdline
#	Specify the command for the external NTLM authenticator.
#	Such a program reads exchanged NTLMSSP packets with
#	the browser via Squid until authentication is completed.
#	If you use an NTLM authenticator, make sure you have 1 acl
#	of type proxy_auth.  By default, the NTLM authenticator_program
#	is not used.
#
#	auth_param ntlm program /usr/bin/ntlm_auth
#
#	"children" numberofchildren
#	The number of authenticator processes to spawn (no default).
#	If you start too few Squid will have to wait for them to
#	process a backlog of credential verifications, slowing it
#	down. When credential verifications are done via a (slow)
#	network you are likely to need lots of authenticator
#	processes.
#
#	auth_param ntlm children 5
#
#	"keep_alive" on|off
#	Whether to keep the connection open after the initial response where
#	Squid tells the browser which schemes are supported by the proxy.
#	Some browsers are known to present many login popups or to corrupt
#	POST/PUT requests transfer if the connection is not closed.
#	The default is currently OFF to avoid this, but may change.
#	
#	auth_param ntlm keep_alive on
#
#	=== Options for configuring the NEGOTIATE auth-scheme follow ===
#
#	"program" cmdline
#	Specify the command for the external Negotiate authenticator.
#	This protocol is used in Microsoft Active-Directory enabled setups with
#	the Microsoft Internet Explorer or Mozilla Firefox browsers.
#	Its main purpose is to exchange credentials with the Squid proxy
#	using the Kerberos mechanisms.
#	If you use a Negotiate authenticator, make sure you have at least
#	one acl of type proxy_auth active. By default, the negotiate
#	authenticator_program is not used.
#	The only supported program for this role is the ntlm_auth
#	program distributed as part of Samba, version 4 or later.
#
#	auth_param negotiate program /usr/bin/ntlm_auth --helper-protocol=gss-spnego
#
#	"children" numberofchildren
#	The number of authenticator processes to spawn (no default).
#	If you start too few Squid will have to wait for them to
#	process a backlog of credential verifications, slowing it
#	down. When crendential verifications are done via a (slow)
#	network you are likely to need lots of authenticator
#	processes.
#	auth_param negotiate children 5
#
#	"keep_alive" on|off
#	Whether to keep the connection open after the initial response where
#	Squid tells the browser which schemes are supported by the proxy.
#	Some browsers are known to present many login popups or to corrupt
#	POST/PUT requests transfer if the connection is not closed.
#	The default is currently OFF to avoid this, but may change.
#	
#	auth_param negotiate keep_alive on
#
#
#	Examples:
#
##Recommended minimum configuration per scheme:
##auth_param negotiate program <uncomment and complete this line to activate>
##auth_param negotiate children 5
##auth_param negotiate keep_alive on
##
##auth_param ntlm program <uncomment and complete this line to activate>
##auth_param ntlm children 5
##auth_param ntlm keep_alive on
##
##auth_param digest program <uncomment and complete this line>
##auth_param digest children 5
##auth_param digest realm Squid proxy-caching web server
##auth_param digest nonce_garbage_interval 5 minutes
##auth_param digest nonce_max_duration 30 minutes
##auth_param digest nonce_max_count 50
##
##auth_param basic program <uncomment and complete this line>
##auth_param basic children 5
##auth_param basic realm Squid proxy-caching web server
##auth_param basic credentialsttl 2 hours
#Default:
# none

#  TAG: authenticate_cache_garbage_interval
#	The time period between garbage collection across the username cache.
#	This is a tradeoff between memory utilization (long intervals - say
#	2 days) and CPU (short intervals - say 1 minute). Only change if you
#	have good reason to.
#Default:
# authenticate_cache_garbage_interval 1 hour

#  TAG: authenticate_ttl
#	The time a user & their credentials stay in the logged in
#	user cache since their last request. When the garbage
#	interval passes, all user credentials that have passed their
#	TTL are removed from memory.
#Default:
# authenticate_ttl 1 hour

#  TAG: authenticate_ip_ttl
#	If you use proxy authentication and the 'max_user_ip' ACL,
#	this directive controls how long Squid remembers the IP
#	addresses associated with each user.  Use a small value
#	(e.g., 60 seconds) if your users might change addresses
#	quickly, as is the case with dialups.   You might be safe
#	using a larger value (e.g., 2 hours) in a corporate LAN
#	environment with relatively static address assignments.
#Default:
# authenticate_ip_ttl 0 seconds

# ACCESS CONTROLS
# -----------------------------------------------------------------------------

#  TAG: external_acl_type
#	This option defines external acl classes using a helper program
#	to look up the status
#
#	  external_acl_type name [options] FORMAT.. /path/to/helper [helper arguments..]
#
#	Options:
#
#	  ttl=n		TTL in seconds for cached results (defaults to 3600
#	  		for 1 hour)
#	  negative_ttl=n
#	  		TTL for cached negative lookups (default same
#	  		as ttl)
#	  children=n	Number of acl helper processes spawn to service
#			external acl lookups of this type. (default 5)
#	  concurrency=n	concurrency level per process. Only used with helpers
#			capable of processing more than one query at a time.
#	  cache=n	result cache size, 0 is unbounded (default)
#	  grace=n	Percentage remaining of TTL where a refresh of a
#			cached entry should be initiated without needing to
#			wait for a new reply. (default 0 for no grace period)
#	  protocol=2.5	Compatibility mode for Squid-2.5 external acl helpers
#	  ipv4 / ipv6	IP protocol used to communicate with this helper.
#			The default is to auto-detect IPv6 and use it when available.
#
#	FORMAT specifications
#
#	  %LOGIN	Authenticated user login name
#	  %EXT_USER	Username from external acl
#	  %IDENT	Ident user name
#	  %SRC		Client IP
#	  %SRCPORT	Client source port
#	  %URI		Requested URI
#	  %DST		Requested host
#	  %PROTO	Requested protocol
#	  %PORT		Requested port
#	  %PATH		Requested URL path
#	  %METHOD	Request method
#	  %MYADDR	Squid interface address
#	  %MYPORT	Squid http_port number
#	  %PATH		Requested URL-path (including query-string if any)
#	  %USER_CERT	SSL User certificate in PEM format
#	  %USER_CERTCHAIN SSL User certificate chain in PEM format
#	  %USER_CERT_xx	SSL User certificate subject attribute xx
#	  %USER_CA_xx	SSL User certificate issuer attribute xx
#
#	  %>{Header}	HTTP request header "Header"
#	  %>{Hdr:member}
#	  		HTTP request header "Hdr" list member "member"
#	  %>{Hdr:;member}
#	  		HTTP request header list member using ; as
#	  		list separator. ; can be any non-alphanumeric
#			character.
#
#	  %<{Header}	HTTP reply header "Header"
#	  %<{Hdr:member}
#	  		HTTP reply header "Hdr" list member "member"
#	  %<{Hdr:;member}
#	  		HTTP reply header list member using ; as
#	  		list separator. ; can be any non-alphanumeric
#			character.
#
#	  %%		The percent sign. Useful for helpers which need
#			an unchanging input format.
#
#	In addition to the above, any string specified in the referencing
#	acl will also be included in the helper request line, after the
#	specified formats (see the "acl external" directive)
#
#	The helper receives lines per the above format specification,
#	and returns lines starting with OK or ERR indicating the validity
#	of the request and optionally followed by additional keywords with
#	more details.
#
#	General result syntax:
#
#	  OK/ERR keyword=value ...
#
#	Defined keywords:
#
#	  user=		The users name (login)
#	  password=	The users password (for login= cache_peer option)
#	  message=	Message describing the reason. Available as %o
#	  		in error pages
#	  tag=		Apply a tag to a request (for both ERR and OK results)
#	  		Only sets a tag, does not alter existing tags.
#	  log=		String to be logged in access.log. Available as
#	  		%ea in logformat specifications
#
#	If protocol=3.0 (the default) then URL escaping is used to protect
#	each value in both requests and responses.
#
#	If using protocol=2.5 then all values need to be enclosed in quotes
#	if they may contain whitespace, or the whitespace escaped using \.
#	And quotes or \ characters within the keyword value must be \ escaped.
#
#	When using the concurrency= option the protocol is changed by
#	introducing a query channel tag infront of the request/response.
#	The query channel tag is a number between 0 and concurrency-1.
#Default:
# none

#  TAG: acl
#	Defining an Access List
#
#	Every access list definition must begin with an aclname and acltype, 
#	followed by either type-specific arguments or a quoted filename that
#	they are read from.
#
#	   acl aclname acltype argument ...
#	   acl aclname acltype "file" ...
#
#	When using "file", the file should contain one item per line.
#
#	By default, regular expressions are CASE-SENSITIVE.
#	To make them case-insensitive, use the -i option. To return case-sensitive
#	use the +i option between patterns, or make a new ACL line without -i.
#
#	Some acl types require suspending the current request in order
#	to access some external data source.
#	Those which do are marked with the tag [slow], those which
#	don't are marked as [fast].
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl
#	for further information
#
#	***** ACL TYPES AVAILABLE *****
#
#	acl aclname src ip-address/netmask ...	# clients IP address [fast]
#	acl aclname src addr1-addr2/netmask ...	# range of addresses [fast]
#	acl aclname dst ip-address/netmask ...	# URL host's IP address [slow]
#	acl aclname myip ip-address/netmask ...	# local socket IP address [fast]
#
#	acl aclname arp      mac-address ... (xx:xx:xx:xx:xx:xx notation)
#	  # The arp ACL requires the special configure option --enable-arp-acl.
#	  # Furthermore, the ARP ACL code is not portable to all operating systems.
#	  # It works on Linux, Solaris, Windows, FreeBSD, and some
#	  # other *BSD variants.
#	  # [fast]
#	  #
#	  # NOTE: Squid can only determine the MAC address for clients that are on
#	  # the same subnet. If the client is on a different subnet,
#	  # then Squid cannot find out its MAC address.
#
#	acl aclname srcdomain   .foo.com ...
#	  # reverse lookup, from client IP [slow]
#	acl aclname dstdomain   .foo.com ...
#	  # Destination server from URL [fast]
#	acl aclname srcdom_regex [-i] \.foo\.com ...
#	  # regex matching client name [slow]
#	acl aclname dstdom_regex [-i] \.foo\.com ...
#	  # regex matching server [fast]
#	  #
#	  # For dstdomain and dstdom_regex a reverse lookup is tried if a IP
#	  # based URL is used and no match is found. The name "none" is used
#	  # if the reverse lookup fails.
#
#	acl aclname src_as number ...
#	acl aclname dst_as number ...
#	  # [fast]
#	  # Except for access control, AS numbers can be used for
#	  # routing of requests to specific caches. Here's an
#	  # example for routing all requests for AS#1241 and only
#	  # those to mycache.mydomain.net:
#	  # acl asexample dst_as 1241
#	  # cache_peer_access mycache.mydomain.net allow asexample
#	  # cache_peer_access mycache_mydomain.net deny all
#
#	acl aclname peername myPeer ...
#	  # [fast]
#	  # match against a named cache_peer entry
#	  # set unique name= on cache_peer lines for reliable use.
#
#	acl aclname time [day-abbrevs] [h1:m1-h2:m2]
#	  # [fast]
#	  #  day-abbrevs:
#	  #	S - Sunday
#	  #	M - Monday
#	  #	T - Tuesday
#	  #	W - Wednesday
#	  #	H - Thursday
#	  #	F - Friday
#	  #	A - Saturday
#	  #  h1:m1 must be less than h2:m2
#
#	acl aclname url_regex [-i] ^http:// ...
#	  # regex matching on whole URL [fast]
#	acl aclname urlpath_regex [-i] \.gif$ ...
#	  # regex matching on URL path [fast]
#
#	acl aclname port 80 70 21 0-1024...   # destination TCP port [fast]
#	                                      # ranges are alloed
#	acl aclname myport 3128 ...	          # local socket TCP port [fast]
#	acl aclname myportname 3128 ...       # http(s)_port name [fast]
#
#	acl aclname proto HTTP FTP ...        # request protocol [fast]
# 
#	acl aclname method GET POST ...       # HTTP request method [fast]
#
#	acl aclname http_status 200 301 500- 400-403 ... 
#	  # status code in reply [fast]
#
#	acl aclname browser [-i] regexp ...
#	  # pattern match on User-Agent header (see also req_header below) [fast]
#
#	acl aclname referer_regex [-i] regexp ...
#	  # pattern match on Referer header [fast]
#	  # Referer is highly unreliable, so use with care
#
#	acl aclname ident username ...
#	acl aclname ident_regex [-i] pattern ...
#	  # string match on ident output [slow]
#	  # use REQUIRED to accept any non-null ident.
#
#	acl aclname proxy_auth [-i] username ...
#	acl aclname proxy_auth_regex [-i] pattern ...
#	  # perform http authentication challenge to the client and match against
#	  # supplied credentials [slow]
#	  #
#	  # takes a list of allowed usernames.
#	  # use REQUIRED to accept any valid username.
#	  #
#	  # Will use proxy authentication in forward-proxy scenarios, and plain
#	  # http authenticaiton in reverse-proxy scenarios
#	  #
#	  # NOTE: when a Proxy-Authentication header is sent but it is not
#	  # needed during ACL checking the username is NOT logged
#	  # in access.log.
#	  #
#	  # NOTE: proxy_auth requires a EXTERNAL authentication program
#	  # to check username/password combinations (see
#	  # auth_param directive).
#	  #
#	  # NOTE: proxy_auth can't be used in a transparent/intercepting proxy
#	  # as the browser needs to be configured for using a proxy in order
#	  # to respond to proxy authentication.
#
#	acl aclname snmp_community string ...
#	  # A community string to limit access to your SNMP Agent [fast]
#	  # Example:
#	  #
#	  #	acl snmppublic snmp_community public
#
#	acl aclname maxconn number
#	  # This will be matched when the client's IP address has
#	  # more than <number> TCP connections established. [fast]
#	  # NOTE: This only measures direct TCP links so X-Forwarded-For
#	  # indirect clients are not counted.
#
#	acl aclname max_user_ip [-s] number
#	  # This will be matched when the user attempts to log in from more
#	  # than <number> different ip addresses. The authenticate_ip_ttl
#	  # parameter controls the timeout on the ip entries. [fast]
#	  # If -s is specified the limit is strict, denying browsing
#	  # from any further IP addresses until the ttl has expired. Without
#	  # -s Squid will just annoy the user by "randomly" denying requests.
#	  # (the counter is reset each time the limit is reached and a
#	  # request is denied)
#	  # NOTE: in acceleration mode or where there is mesh of child proxies,
#	  # clients may appear to come from multiple addresses if they are
#	  # going through proxy farms, so a limit of 1 may cause user problems.
#
#	acl aclname req_mime_type [-i] mime-type ...
#	  # regex match against the mime type of the request generated
#	  # by the client. Can be used to detect file upload or some
#	  # types HTTP tunneling requests [fast]
#	  # NOTE: This does NOT match the reply. You cannot use this
#	  # to match the returned file type.
#
#	acl aclname req_header header-name [-i] any\.regex\.here
#	  # regex match against any of the known request headers.  May be
#	  # thought of as a superset of "browser", "referer" and "mime-type"
#	  # ACL [fast]
#
#	acl aclname rep_mime_type [-i] mime-type ...
#	  # regex match against the mime type of the reply received by
#	  # squid. Can be used to detect file download or some
#	  # types HTTP tunneling requests. [fast]
#	  # NOTE: This has no effect in http_access rules. It only has
#	  # effect in rules that affect the reply data stream such as
#	  # http_reply_access.
#
#	acl aclname rep_header header-name [-i] any\.regex\.here
#	  # regex match against any of the known reply headers. May be
#	  # thought of as a superset of "browser", "referer" and "mime-type"
#	  # ACLs [fast]
#
#	acl aclname external class_name [arguments...]
#	  # external ACL lookup via a helper class defined by the
#	  # external_acl_type directive [slow]
#
#	acl aclname user_cert attribute values...
#	  # match against attributes in a user SSL certificate
#	  # attribute is one of DN/C/O/CN/L/ST [fast]
#
#	acl aclname ca_cert attribute values...
#	  # match against attributes a users issuing CA SSL certificate
#	  # attribute is one of DN/C/O/CN/L/ST [fast]
#
#	acl aclname ext_user username ...
#	acl aclname ext_user_regex [-i] pattern ...
#	  # string match on username returned by external acl helper [slow]
#	  # use REQUIRED to accept any non-null user name.
#
#	acl aclname tag tagvalue ...
#	  # string match on tag returned by external acl helper [slow]
#
#	Examples:
#		acl macaddress arp 09:00:2b:23:45:67
#		acl myexample dst_as 1241
#		acl password proxy_auth REQUIRED
#		acl fileupload req_mime_type -i ^multipart/form-data$
#		acl javascript rep_mime_type -i ^application/x-javascript$
#
#Default:
# acl all src all
#
#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 443
acl Safe_ports port 80		# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
acl Safe_ports port 70		# gopher
acl Safe_ports port 210		# wais
acl Safe_ports port 1025-65535	# unregistered ports
acl Safe_ports port 280		# http-mgmt
acl Safe_ports port 488		# gss-http
acl Safe_ports port 591		# filemaker
acl Safe_ports port 777		# multiling http
acl CONNECT method CONNECT

#  TAG: follow_x_forwarded_for
#	Allowing or Denying the X-Forwarded-For header to be followed to
#	find the original source of a request.
#
#	Requests may pass through a chain of several other proxies
#	before reaching us.  The X-Forwarded-For header will contain a
#	comma-separated list of the IP addresses in the chain, with the
#	rightmost address being the most recent.
#
#	If a request reaches us from a source that is allowed by this
#	configuration item, then we consult the X-Forwarded-For header
#	to see where that host received the request from.  If the
#	X-Forwarded-For header contains multiple addresses, we continue
#	backtracking until we reach an address for which we are not allowed
#	to follow the X-Forwarded-For header, or until we reach the first
#	address in the list. For the purpose of ACL used in the
#	follow_x_forwarded_for directive the src ACL type always matches
#	the address we are testing and srcdomain matches its rDNS.
#
#	The end result of this process is an IP address that we will
#	refer to as the indirect client address.  This address may
#	be treated as the client address for access control, ICAP, delay
#	pools and logging, depending on the acl_uses_indirect_client,
#	icap_uses_indirect_client, delay_pool_uses_indirect_client and
#	log_uses_indirect_client options.
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#
#	SECURITY CONSIDERATIONS:
#
#		Any host for which we follow the X-Forwarded-For header
#		can place incorrect information in the header, and Squid
#		will use the incorrect information as if it were the
#		source address of the request.  This may enable remote
#		hosts to bypass any access control restrictions that are
#		based on the client's source addresses.
#
#	For example:
#
#		acl localhost src 127.0.0.1
#		acl my_other_proxy srcdomain .proxy.example.com
#		follow_x_forwarded_for allow localhost
#		follow_x_forwarded_for allow my_other_proxy
#Default:
# follow_x_forwarded_for deny all

#  TAG: acl_uses_indirect_client	on|off
#	Controls whether the indirect client address
#	(see follow_x_forwarded_for) is used instead of the
#	direct client address in acl matching.
#
#	NOTE: maxconn ACL considers direct TCP links and indirect
#	      clients will always have zero. So no match.
#Default:
# acl_uses_indirect_client on

#  TAG: delay_pool_uses_indirect_client	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-follow-x-forwarded-for and --enable-delay-pools option
#
#	Controls whether the indirect client address
#	(see follow_x_forwarded_for) is used instead of the
#	direct client address in delay pools.
#Default:
# delay_pool_uses_indirect_client on

#  TAG: log_uses_indirect_client	on|off
#	Controls whether the indirect client address
#	(see follow_x_forwarded_for) is used instead of the
#	direct client address in the access log.
#Default:
# log_uses_indirect_client on

#  TAG: http_access
#	Allowing or Denying access based on defined access lists
#
#	Access to the HTTP port:
#	http_access allow|deny [!]aclname ...
#
#	NOTE on default values:
#
#	If there are no "access" lines present, the default is to deny
#	the request.
#
#	If none of the "access" lines cause a match, the default is the
#	opposite of the last line in the list.  If the last line was
#	deny, the default is allow.  Conversely, if the last line
#	is allow, the default will be deny.  For these reasons, it is a
#	good idea to have an "deny all" entry at the end of your access
#	lists to avoid potential confusion.
#
#	This clause supports both fast and slow acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#
#Default:
# http_access deny all
#

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost

# And finally deny all other access to this proxy
http_access deny all

#  TAG: adapted_http_access
#	Allowing or Denying access based on defined access lists
#
#	Essentially identical to http_access, but runs after redirectors
#	and ICAP/eCAP adaptation. Allowing access control based on their
#	output.
#
#	If not set then only http_access is used.
#Default:
# none

#  TAG: http_reply_access
#	Allow replies to client requests. This is complementary to http_access.
#
#	http_reply_access allow|deny [!] aclname ...
#
#	NOTE: if there are no access lines present, the default is to allow
#	all replies
#
#	If none of the access lines cause a match the opposite of the
#	last line will apply. Thus it is good practice to end the rules
#	with an "allow all" or "deny all" entry.
#
#	This clause supports both fast and slow acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# none

#  TAG: icp_access
#	Allowing or Denying access to the ICP port based on defined
#	access lists
#
#	icp_access  allow|deny [!]aclname ...
#
#	See http_access for details
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#
## Allow ICP queries from local networks only
##icp_access allow localnet
##icp_access deny all
#Default:
# icp_access deny all
#
#Allow ICP queries from local networks only
icp_access allow localnet
icp_access deny all

#  TAG: htcp_access
#	Allowing or Denying access to the HTCP port based on defined
#	access lists
#
#	htcp_access  allow|deny [!]aclname ...
#
#	See http_access for details
#
#	NOTE: The default if no htcp_access lines are present is to
#	deny all traffic. This default may cause problems with peers
#	using the htcp or htcp-oldsquid options.
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#
## Allow HTCP queries from local networks only
##htcp_access allow localnet
##htcp_access deny all
#Default:
# htcp_access deny all
#
#Allow HTCP queries from local networks only
htcp_access allow localnet
htcp_access deny all

#  TAG: htcp_clr_access
#	Allowing or Denying access to purge content using HTCP based
#	on defined access lists
#
#	htcp_clr_access  allow|deny [!]aclname ...
#
#	See http_access for details
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#
## Allow HTCP CLR requests from trusted peers
#acl htcp_clr_peer src 172.16.1.2
#htcp_clr_access allow htcp_clr_peer
#Default:
# htcp_clr_access deny all

#  TAG: miss_access
#	Determins whether network access is permitted when satisfying a request.
#
#	For example;
#	    to force your neighbors to use you as a sibling instead of
#	    a parent.
#
#		acl localclients src 172.16.0.0/16
#		miss_access allow localclients
#		miss_access deny  !localclients
#
#	This means only your local clients are allowed to fetch relayed/MISS
#	replies from the network and all other clients can only fetch cached
#	objects (HITs).
#
#
#	The default for this setting allows all clients who passed the
#	http_access rules to relay via this proxy.
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# miss_access allow all

#  TAG: ident_lookup_access
#	A list of ACL elements which, if matched, cause an ident
#	(RFC 931) lookup to be performed for this request.  For
#	example, you might choose to always perform ident lookups
#	for your main multi-user Unix boxes, but not for your Macs
#	and PCs.  By default, ident lookups are not performed for
#	any requests.
#
#	To enable ident lookups for specific client addresses, you
#	can follow this example:
#
#	acl ident_aware_hosts src 198.168.1.0/24
#	ident_lookup_access allow ident_aware_hosts
#	ident_lookup_access deny all
#
#	Only src type ACL checks are fully supported.  A srcdomain
#	ACL might work at times, but it will not always provide
#	the correct result.
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# ident_lookup_access deny all

#  TAG: reply_body_max_size	size [acl acl...]
#	This option specifies the maximum size of a reply body. It can be
#	used to prevent users from downloading very large files, such as
#	MP3's and movies. When the reply headers are received, the
#	reply_body_max_size lines are processed, and the first line where
#	all (if any) listed ACLs are true is used as the maximum body size
#	for this reply.
#
#	This size is checked twice. First when we get the reply headers,
#	we check the content-length value.  If the content length value exists
#	and is larger than the allowed size, the request is denied and the
#	user receives an error message that says "the request or reply
#	is too large." If there is no content-length, and the reply
#	size exceeds this limit, the client's connection is just closed
#	and they will receive a partial reply.
#
#	WARNING: downstream caches probably can not detect a partial reply
#	if there is no content-length header, so they will cache
#	partial responses and give them out as hits.  You should NOT
#	use this option if you have downstream caches.
#
#	WARNING: A maximum size smaller than the size of squid's error messages
#	will cause an infinite loop and crash squid. Ensure that the smallest
#	non-zero value you use is greater that the maximum header size plus
#	the size of your largest error page.
#
#	If you set this parameter none (the default), there will be
#	no limit imposed.
#
#	Configuration Format is:
#		reply_body_max_size SIZE UNITS [acl ...]
#	ie.
#		reply_body_max_size 10 MB
#
#Default:
# none

# NETWORK OPTIONS
# -----------------------------------------------------------------------------

#  TAG: http_port
#	Usage:	port [options]
#		hostname:port [options]
#		1.2.3.4:port [options]
#
#	The socket addresses where Squid will listen for HTTP client
#	requests.  You may specify multiple socket addresses.
#	There are three forms: port alone, hostname with port, and
#	IP address with port.  If you specify a hostname or IP
#	address, Squid binds the socket to that specific
#	address.  This replaces the old 'tcp_incoming_address'
#	option.  Most likely, you do not need to bind to a specific
#	address, so you can use the port number alone.
#
#	If you are running Squid in accelerator mode, you
#	probably want to listen on port 80 also, or instead.
#
#	The -a command line option may be used to specify additional
#	port(s) where Squid listens for proxy request. Such ports will
#	be plain proxy ports with no options.
#
#	You may specify multiple socket addresses on multiple lines.
#
#	Options:
#
#	   intercept	Support for IP-Layer interception of
#			outgoing requests without browser settings.
#			NP: disables authentication and IPv6 on the port.
#
#	   tproxy	Support Linux TPROXY for spoofing outgoing
#			connections using the client IP address.
#			NP: disables authentication and maybe IPv6 on the port.
#
#	   accel	Accelerator mode. Also needs at least one of
#			vhost / vport / defaultsite.
#
#	   allow-direct	Allow direct forwarding in accelerator mode. Normally
#			accelerated requests are denied direct forwarding as if
#			never_direct was used.
#
#	   defaultsite=domainname
#			What to use for the Host: header if it is not present
#			in a request. Determines what site (not origin server)
#			accelerators should consider the default.
#			Implies accel.
#
#	   vhost	Accelerator mode using Host header for virtual domain support.
#			Also uses the port as specified in Host: header unless
#			overridden by the vport option. Implies accel.
#
#	   vport	Virtual host port support. Using the http_port number
#			instead of the port passed on Host: headers. Implies accel.
#
#	   vport=NN	Virtual host port support. Using the specified port
#			number instead of the port passed on Host: headers.
#			Implies accel.
#
#	   protocol=	Protocol to reconstruct accelerated requests with.
#			Defaults to http.
#
#	   ignore-cc	Ignore request Cache-Control headers.
#
#	   		Warning: This option violates HTTP specifications if
#			used in non-accelerator setups.
#
#	   connection-auth[=on|off]
#	                use connection-auth=off to tell Squid to prevent 
#	                forwarding Microsoft connection oriented authentication
#			(NTLM, Negotiate and Kerberos)
#
#	   disable-pmtu-discovery=
#			Control Path-MTU discovery usage:
#			    off		lets OS decide on what to do (default).
#			    transparent	disable PMTU discovery when transparent
#					support is enabled.
#			    always	disable always PMTU discovery.
#
#			In many setups of transparently intercepting proxies
#			Path-MTU discovery can not work on traffic towards the
#			clients. This is the case when the intercepting device
#			does not fully track connections and fails to forward
#			ICMP must fragment messages to the cache server. If you
#			have such setup and experience that certain clients
#			sporadically hang or never complete requests set
#			disable-pmtu-discovery option to 'transparent'.
#
#	   ssl-bump 	Intercept each CONNECT request matching ssl_bump ACL,
#			establish secure connection with the client and with
#			the server, decrypt HTTP messages as they pass through
#			Squid, and treat them as unencrypted HTTP messages,
#			becoming the man-in-the-middle.
#
#			When this option is enabled, additional options become
#			available to specify SSL-related properties of the
#			client-side connection: cert, key, version, cipher,
#			options, clientca, cafile, capath, crlfile, dhparams,
#			sslflags, and sslcontext. See the https_port directive
#			for more information on these options.
#
#			The ssl_bump option is required to fully enable
#			the SslBump feature.
#
#	   name=	Specifies a internal name for the port. Defaults to
#			the port specification (port or addr:port)
#
#	   tcpkeepalive[=idle,interval,timeout]
#			Enable TCP keepalive probes of idle connections.
#			In seconds; idle is the initial time before TCP starts
#			probing the connection, interval how often to probe, and
#			timeout the time before giving up.
#
#	If you run Squid on a dual-homed machine with an internal
#	and an external interface we recommend you to specify the
#	internal address:port in http_port. This way Squid will only be
#	visible on the internal address.
#
#

# Squid normally listens to port 3128
http_port 3128

#  TAG: https_port
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	Usage:  [ip:]port cert=certificate.pem [key=key.pem] [options...]
#
#	The socket address where Squid will listen for HTTPS client
#	requests.
#
#	This is really only useful for situations where you are running
#	squid in accelerator mode and you want to do the SSL work at the
#	accelerator level.
#
#	You may specify multiple socket addresses on multiple lines,
#	each with their own SSL certificate and/or options.
#
#	Options:
#
#	   accel	Accelerator mode. Also needs at least one of
#			defaultsite or vhost.
#
#	   defaultsite=	The name of the https site presented on
#	   		this port. Implies accel.
#
#	   vhost	Accelerator mode using Host header for virtual
#			domain support. Requires a wildcard certificate
#			or other certificate valid for more than one domain.
#			Implies accel.
#
#	   protocol=	Protocol to reconstruct accelerated requests with.
#			Defaults to https.
#
#	   cert=	Path to SSL certificate (PEM format).
#
#	   key=		Path to SSL private key file (PEM format)
#			if not specified, the certificate file is
#			assumed to be a combined certificate and
#			key file.
#
#	   version=	The version of SSL/TLS supported
#			    1	automatic (default)
#			    2	SSLv2 only
#			    3	SSLv3 only
#			    4	TLSv1 only
#
#	   cipher=	Colon separated list of supported ciphers.
#			NOTE: some ciphers such as EDH ciphers depend on
#			      additional settings. If those settings are
#			      omitted the ciphers may be silently ignored
#			      by the OpenSSL library.
#
#	   options=	Various SSL engine options. The most important
#			being:
#			    NO_SSLv2  Disallow the use of SSLv2
#			    NO_SSLv3  Disallow the use of SSLv3
#			    NO_TLSv1  Disallow the use of TLSv1
#			    SINGLE_DH_USE Always create a new key when using
#				      temporary/ephemeral DH key exchanges
#			See OpenSSL SSL_CTX_set_options documentation for a
#			complete list of options.
#
#	   clientca=	File containing the list of CAs to use when
#			requesting a client certificate.
#
#	   cafile=	File containing additional CA certificates to
#			use when verifying client certificates. If unset
#			clientca will be used.
#
#	   capath=	Directory containing additional CA certificates
#			and CRL lists to use when verifying client certificates.
#
#	   crlfile=	File of additional CRL lists to use when verifying
#			the client certificate, in addition to CRLs stored in
#			the capath. Implies VERIFY_CRL flag below.
#
#	   dhparams=	File containing DH parameters for temporary/ephemeral
#			DH key exchanges. See OpenSSL documentation for details
#			on how to create this file.
#			WARNING: EDH ciphers will be silently disabled if this
#				 option is not set.
#
#	   sslflags=	Various flags modifying the use of SSL:
#			    DELAYED_AUTH
#				Don't request client certificates
#				immediately, but wait until acl processing
#				requires a certificate (not yet implemented).
#			    NO_DEFAULT_CA
#				Don't use the default CA lists built in
#				to OpenSSL.
#			    NO_SESSION_REUSE
#				Don't allow for session reuse. Each connection
#				will result in a new SSL session.
#			    VERIFY_CRL
#				Verify CRL lists when accepting client
#				certificates.
#			    VERIFY_CRL_ALL
#				Verify CRL lists for all certificates in the
#				client certificate chain.
#
#	   sslcontext=	SSL session ID context identifier.
#
#	   generate-host-certificates[=<on|off>]
#			Dynamically create SSL server certificates for the
#			destination hosts of bumped CONNECT requests.When 
#			enabled, the cert and key options are used to sign
#			generated certificates. Otherwise generated
#			certificate will be selfsigned.
#			If there is CA certificate life time of generated 
#			certificate equals lifetime of CA certificate. If
#			generated certificate is selfsigned lifetime is three 
#			years.
#			This option is enabled by default when SslBump is used.
#			See the sslBump option above for more information.
#			
#	   dynamic_cert_mem_cache_size=SIZE
#			Approximate total RAM size spent on cached generated
#			certificates. If set to zero, caching is disabled. The
#			default value is 4MB. An average XXX-bit certificate
#			consumes about XXX bytes of RAM.
#
#	   vport	Accelerator with IP based virtual host support.
#
#	   vport=NN	As above, but uses specified port number rather
#			than the https_port number. Implies accel.
#
#	   name=	Specifies a internal name for the port. Defaults to
#			the port specification (port or addr:port)
#
#Default:
# none

#  TAG: tcp_outgoing_tos
#	Allows you to select a TOS/Diffserv value to mark outgoing
#	connections with, based on the username or source address
#	making the request.
#
#	tcp_outgoing_tos ds-field [!]aclname ...
#
#	Example where normal_service_net uses the TOS value 0x00
#	and good_service_net uses 0x20
#
#	acl normal_service_net src 10.0.0.0/24
#	acl good_service_net src 10.0.1.0/24
#	tcp_outgoing_tos 0x00 normal_service_net
#	tcp_outgoing_tos 0x20 good_service_net
#
#	TOS/DSCP values really only have local significance - so you should
#	know what you're specifying. For more information, see RFC2474,
#	RFC2475, and RFC3260.
#
#	The TOS/DSCP byte must be exactly that - a octet value  0 - 255, or
#	"default" to use whatever default your host has. Note that in
#	practice often only multiples of 4 is usable as the two rightmost bits
#	have been redefined for use by ECN (RFC 3168 section 23.1).
#
#	Processing proceeds in the order specified, and stops at first fully
#	matching line.
#
#	Note: The use of this directive using client dependent ACLs is
#	incompatible with the use of server side persistent connections. To
#	ensure correct results it is best to set server_persisten_connections
#	to off when using this directive in such configurations.
#Default:
# none

#  TAG: clientside_tos
#	Allows you to select a TOS/Diffserv value to mark client-side
#	connections with, based on the username or source address
#	making the request.
#Default:
# none

#  TAG: qos_flows
# Note: This option is only available if Squid is rebuilt with the
#       --enable-zph-qos option
#
#	Allows you to select a TOS/DSCP value to mark outgoing
#	connections with, based on where the reply was sourced.
#
#	TOS values really only have local significance - so you should
#	know what you're specifying. For more information, see RFC2474,
#	RFC2475, and RFC3260.
#
#	The TOS/DSCP byte must be exactly that - octet value 0x00-0xFF.
#	Note that in practice often only values up to 0x3F are usable
#	as the two highest bits have been redefined for use by ECN
#	(RFC3168).
#
#	This setting is configured by setting the source TOS values:
#
#	local-hit=0xFF		Value to mark local cache hits.
#
#	sibling-hit=0xFF	Value to mark hits from sibling peers.
#
#	parent-hit=0xFF		Value to mark hits from parent peers.
#
#
#	NOTE: 'miss' preserve feature is only possible on Linux at this time.
#
#	For the following to work correctly, you will need to patch your
#	linux kernel with the TOS preserving ZPH patch.
#	The kernel patch can be downloaded from http://zph.bratcheda.org
#
#	disable-preserve-miss
#		By default, the existing TOS value of the response coming
#		from the remote server will be retained and masked with
#		miss-mark. This option disables that feature.
#
#	miss-mask=0xFF
#		Allows you to mask certain bits in the TOS received from the
#		remote server, before copying the value to the TOS sent
#		towards clients.
#		Default: 0xFF (TOS from server is not changed).
#
#Default:
# none

#  TAG: tcp_outgoing_address
#	Allows you to map requests to different outgoing IP addresses
#	based on the username or source address of the user making
#	the request.
#
#	tcp_outgoing_address ipaddr [[!]aclname] ...
#
#	Example where requests from 10.0.0.0/24 will be forwarded
#	with source address 10.1.0.1, 10.0.2.0/24 forwarded with
#	source address 10.1.0.2 and the rest will be forwarded with
#	source address 10.1.0.3.
#
#	acl normal_service_net src 10.0.0.0/24
#	acl good_service_net src 10.0.2.0/24
#	tcp_outgoing_address 10.1.0.1 normal_service_net
#	tcp_outgoing_address 10.1.0.2 good_service_net
#	tcp_outgoing_address 10.1.0.3
#
#	Processing proceeds in the order specified, and stops at first fully
#	matching line.
#
#	Note: The use of this directive using client dependent ACLs is
#	incompatible with the use of server side persistent connections. To
#	ensure correct results it is best to set server_persistent_connections
#	to off when using this directive in such configurations.
#
#
#        IPv6 Magic:
#
#	Squid is built with a capability of bridging the IPv4 and IPv6 
#	internets.
#	tcp_outgoing_address as exampled above breaks this bridging by forcing
#	all outbound traffic through a certain IPv4 which may be on the wrong
#	side of the IPv4/IPv6 boundary.
#
#	To operate with tcp_outgoing_address and keep the bridging benefits
#	an additional ACL needs to be used which ensures the IPv6-bound traffic
#	is never forced or permitted out the IPv4 interface.
#
#	# IPv6 destination test along with a dummy access control to perofrm the required DNS
#	# This MUST be place before any ALLOW rules.
#	acl to_ipv6 dst ipv6
#	http_access deny ipv6 !all
#
#	tcp_outgoing_address 2001:db8::c001 good_service_net to_ipv6
#	tcp_outgoing_address 10.1.0.2 good_service_net !to_ipv6
#
#	tcp_outgoing_address 2001:db8::beef normal_service_net to_ipv6
#	tcp_outgoing_address 10.1.0.1 normal_service_net !to_ipv6
#
#	tcp_outgoing_address 2001:db8::1 to_ipv6
#	tcp_outgoing_address 10.1.0.3 !to_ipv6
#
#	WARNING:
#	  'dst ipv6' bases its selection assuming DIRECT access.
#	  If peers are used the peername ACL are needed to select outgoing
#	  address which can link to the peer.
#
#	  'dst ipv6' is a slow ACL. It will only work here if 'dst' is used
#	  previously in the http_access rules to locate the destination IP.
#	  Some more magic may be needed for that:
#	    http_access allow to_ipv6 !all
#	  (meaning, allow if to IPv6 but not from anywhere ;)
#
#Default:
# none

# SSL OPTIONS
# -----------------------------------------------------------------------------

#  TAG: ssl_unclean_shutdown
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	Some browsers (especially MSIE) bugs out on SSL shutdown
#	messages.
#Default:
# ssl_unclean_shutdown off

#  TAG: ssl_engine
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	The OpenSSL engine to use. You will need to set this if you
#	would like to use hardware SSL acceleration for example.
#Default:
# none

#  TAG: sslproxy_client_certificate
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	Client SSL Certificate to use when proxying https:// URLs
#Default:
# none

#  TAG: sslproxy_client_key
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	Client SSL Key to use when proxying https:// URLs
#Default:
# none

#  TAG: sslproxy_version
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	SSL version level to use when proxying https:// URLs
#Default:
# sslproxy_version 1

#  TAG: sslproxy_options
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	SSL engine options to use when proxying https:// URLs
#	
#	The most important being:
#
#		NO_SSLv2  Disallow the use of SSLv2
#		NO_SSLv3  Disallow the use of SSLv3
#		NO_TLSv1  Disallow the use of TLSv1
#		SINGLE_DH_USE
#			Always create a new key when using
#			temporary/ephemeral DH key exchanges
#	
#	These options vary depending on your SSL engine.
#	See the OpenSSL SSL_CTX_set_options documentation for a
#	complete list of possible options.
#Default:
# none

#  TAG: sslproxy_cipher
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	SSL cipher list to use when proxying https:// URLs
#
#	Colon separated list of supported ciphers.
#Default:
# none

#  TAG: sslproxy_cafile
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	file containing CA certificates to use when verifying server
#	certificates while proxying https:// URLs
#Default:
# none

#  TAG: sslproxy_capath
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	directory containing CA certificates to use when verifying
#	server certificates while proxying https:// URLs
#Default:
# none

#  TAG: ssl_bump
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	This ACL controls which CONNECT requests to an http_port
#	marked with an sslBump flag are actually "bumped". Please 
#	see the sslBump flag of an http_port option for more details
#	about decoding proxied SSL connections.
#
#	By default, no requests are bumped.
#
#	See also: http_port ssl-bump
#   
#	This clause supports both fast and slow acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#
#
#	# Example: Bump all requests except those originating from localhost and 
#	# those going to webax.com or example.com sites.
#
#	acl localhost src 127.0.0.1/32
#	acl broken_sites dstdomain .webax.com
#	acl broken_sites dstdomain .example.com
#	ssl_bump deny localhost
#	ssl_bump deny broken_sites
#	ssl_bump allow all
#Default:
# none

#  TAG: sslproxy_flags
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	Various flags modifying the use of SSL while proxying https:// URLs:
#	    DONT_VERIFY_PEER	Accept certificates that fail verification.
#				For refined control, see sslproxy_cert_error.
#	    NO_DEFAULT_CA	Don't use the default CA list built in
#				to OpenSSL.
#Default:
# none

#  TAG: sslproxy_cert_error
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	Use this ACL to bypass server certificate validation errors.
#
#	For example, the following lines will bypass all validation errors
#	when talking to servers located at 172.16.0.0/16. All other
#	validation errors will result in ERR_SECURE_CONNECT_FAIL error.
#
#		acl BrokenServersAtTrustedIP dst 172.16.0.0/16
#		sslproxy_cert_error allow BrokenServersAtTrustedIP
#		sslproxy_cert_error deny all
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#	Using slow acl types may result in server crashes
#
#	Without this option, all server certificate validation errors
#	terminate the transaction. Bypassing validation errors is dangerous
#	because an error usually implies that the server cannot be trusted and
#	the connection may be insecure.
#
#	See also: sslproxy_flags and DONT_VERIFY_PEER.
#
#	Default setting:  sslproxy_cert_error deny all
#Default:
# none

#  TAG: sslpassword_program
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ssl option
#
#	Specify a program used for entering SSL key passphrases
#	when using encrypted SSL certificate keys. If not specified
#	keys must either be unencrypted, or Squid started with the -N
#	option to allow it to query interactively for the passphrase.
#
#	The key file name is given as argument to the program allowing
#	selection of the right password if you have multiple encrypted
#	keys.
#Default:
# none

#OPTIONS RELATING TO EXTERNAL SSL_CRTD 
#-----------------------------------------------------------------------------

#  TAG: sslcrtd_program
# Note: This option is only available if Squid is rebuilt with the
#       -DUSE_SSL_CRTD define
#
#	Specify the location and options of the executable for ssl_crtd process.
#	/usr/libexec/ssl_crtd program requires -s and -M parameters
#	For more information use:
#		/usr/libexec/ssl_crtd -h
#Default:
# sslcrtd_program /usr/libexec/ssl_crtd -s /var/log/squid/lib/ssl_db -M 4MB

#  TAG: sslcrtd_children
# Note: This option is only available if Squid is rebuilt with the
#       -DUSE_SSL_CRTD define
#
#	The maximum number of processes spawn to service ssl server.
#	The maximum this may be safely set to is 32.
#	
#	You must have at least one ssl_crtd process.
#Default:
# sslcrtd_children 5

# OPTIONS WHICH AFFECT THE NEIGHBOR SELECTION ALGORITHM
# -----------------------------------------------------------------------------

#  TAG: cache_peer
#	To specify other caches in a hierarchy, use the format:
#	
#		cache_peer hostname type http-port icp-port [options]
#	
#	For example,
#	
#	#                                        proxy  icp
#	#          hostname             type     port   port  options
#	#          -------------------- -------- ----- -----  -----------
#	cache_peer parent.foo.net       parent    3128  3130  default
#	cache_peer sib1.foo.net         sibling   3128  3130  proxy-only
#	cache_peer sib2.foo.net         sibling   3128  3130  proxy-only
#	cache_peer example.com          parent    80       0  default
#	cache_peer cdn.example.com      sibling   3128     0  
#	
#	      type:	either 'parent', 'sibling', or 'multicast'.
#	
#	proxy-port:	The port number where the peer accept HTTP requests.
#			For other Squid proxies this is usually 3128
#			For web servers this is usually 80
#	
#	  icp-port:	Used for querying neighbor caches about objects.
#			Set to 0 if the peer does not support ICP or HTCP.
#			See ICP and HTCP options below for additional details.
#	
#	
#	==== ICP OPTIONS ====
#	
#	You MUST also set icp_port and icp_access explicitly when using these options.
#	The defaults will prevent peer traffic using ICP.
#	
#	
#	no-query	Disable ICP queries to this neighbor.
#	
#	multicast-responder
#			Indicates the named peer is a member of a multicast group.
#			ICP queries will not be sent directly to the peer, but ICP
#			replies will be accepted from it.
#	
#	closest-only	Indicates that, for ICP_OP_MISS replies, we'll only forward
#			CLOSEST_PARENT_MISSes and never FIRST_PARENT_MISSes.
#	
#	background-ping
#			To only send ICP queries to this neighbor infrequently.
#			This is used to keep the neighbor round trip time updated
#			and is usually used in conjunction with weighted-round-robin.
#	
#	
#	==== HTCP OPTIONS ====
#	
#	You MUST also set htcp_port and htcp_access explicitly when using these options.
#	The defaults will prevent peer traffic using HTCP.
#	
#	
#	htcp		Send HTCP, instead of ICP, queries to the neighbor.
#			You probably also want to set the "icp-port" to 4827
#			instead of 3130.
#	
#	htcp-oldsquid	Send HTCP to old Squid versions.
#	
#	htcp-no-clr	Send HTCP to the neighbor but without
#			sending any CLR requests.  This cannot be used with
#			htcp-only-clr.
#	
#	htcp-only-clr	Send HTCP to the neighbor but ONLY CLR requests.
#			This cannot be used with htcp-no-clr.
#	
#	htcp-no-purge-clr
#			Send HTCP to the neighbor including CLRs but only when
#			they do not result from PURGE requests.
#	
#	htcp-forward-clr
#			Forward any HTCP CLR requests this proxy receives to the peer.
#	
#	
#	==== PEER SELECTION METHODS ====
#	
#	The default peer selection method is ICP, with the first responding peer
#	being used as source. These options can be used for better load balancing.
#	
#	
#	default		This is a parent cache which can be used as a "last-resort"
#			if a peer cannot be located by any of the peer-selection methods.
#			If specified more than once, only the first is used.
#	
#	round-robin	Load-Balance parents which should be used in a round-robin
#			fashion in the absence of any ICP queries.
#			weight=N can be used to add bias.
#	
#	weighted-round-robin
#			Load-Balance parents which should be used in a round-robin
#			fashion with the frequency of each parent being based on the
#			round trip time. Closer parents are used more often.
#			Usually used for background-ping parents.
#			weight=N can be used to add bias.
#	
#	carp		Load-Balance parents which should be used as a CARP array.
#			The requests will be distributed among the parents based on the
#			CARP load balancing hash function based on their weight.
#	
#	userhash	Load-balance parents based on the client proxy_auth or ident username.
#	
#	sourcehash	Load-balance parents based on the client source IP.
#
#	multicast-siblings
#			To be used only for cache peers of type "multicast".
#			ALL members of this multicast group have "sibling"
#			relationship with it, not "parent".  This is to a multicast
#			group when the requested object would be fetched only from
#			a "parent" cache, anyway.  It's useful, e.g., when
#			configuring a pool of redundant Squid proxies, being
#			members of the same multicast group.
#	
#	
#	==== PEER SELECTION OPTIONS ====
#	
#	weight=N	use to affect the selection of a peer during any weighted
#			peer-selection mechanisms.
#			The weight must be an integer; default is 1,
#			larger weights are favored more.
#			This option does not affect parent selection if a peering
#			protocol is not in use.
#	
#	basetime=N	Specify a base amount to be subtracted from round trip
#			times of parents.
#			It is subtracted before division by weight in calculating
#			which parent to fectch from. If the rtt is less than the
#			base time the rtt is set to a minimal value.
#	
#	ttl=N		Specify a TTL to use when sending multicast ICP queries
#			to this address.
#			Only useful when sending to a multicast group.
#			Because we don't accept ICP replies from random
#			hosts, you must configure other group members as
#			peers with the 'multicast-responder' option.
#	
#	no-delay	To prevent access to this neighbor from influencing the
#			delay pools.
#	
#	digest-url=URL	Tell Squid to fetch the cache digest (if digests are
#			enabled) for this host from the specified URL rather
#			than the Squid default location.
#	
#	
#	==== ACCELERATOR / REVERSE-PROXY OPTIONS ====
#	
#	originserver	Causes this parent to be contacted as an origin server.
#			Meant to be used in accelerator setups when the peer
#			is a web server.
#	
#	forceddomain=name
#			Set the Host header of requests forwarded to this peer.
#			Useful in accelerator setups where the server (peer)
#			expects a certain domain name but clients may request
#			others. ie example.com or www.example.com
#	
#	no-digest	Disable request of cache digests.
#	
#	no-netdb-exchange
#			Disables requesting ICMP RTT database (NetDB).
#	
#	
#	==== AUTHENTICATION OPTIONS ====
#	
#	login=user:password
#			If this is a personal/workgroup proxy and your parent
#			requires proxy authentication.
#			
#			Note: The string can include URL escapes (i.e. %20 for
#			spaces). This also means % must be written as %%.
#	
#	login=PROXYPASS
#			Send login details received from client to this peer.
#			Authentication is not required, nor changed.
#			
#			Note: This will pass any form of authentication but
#			only Basic auth will work through a proxy unless the
#			connection-auth options are also used.
#	
#	login=PASS	Send login details received from client to this peer.
#			Authentication is not required by this option.
#			If there are no client-provided authentication headers
#			to pass on, but username and password are available
#			from either proxy login or an external ACL user= and
#			password= result tags they may be sent instead.
#			
#			Note: To combine this with proxy_auth both proxies must
#			share the same user database as HTTP only allows for
#			a single login (one for proxy, one for origin server).
#			Also be warned this will expose your users proxy
#			password to the peer. USE WITH CAUTION
#	
#	login=*:password
#			Send the username to the upstream cache, but with a
#			fixed password. This is meant to be used when the peer
#			is in another administrative domain, but it is still
#			needed to identify each user.
#			The star can optionally be followed by some extra
#			information which is added to the username. This can
#			be used to identify this proxy to the peer, similar to
#			the login=username:password option above.
#	
#	connection-auth=on|off
#			Tell Squid that this peer does or not support Microsoft
#			connection oriented authentication, and any such
#			challenges received from there should be ignored.
#			Default is auto to automatically determine the status
#			of the peer.
#	
#	
#	==== SSL / HTTPS / TLS OPTIONS ====
#	
#	ssl		Encrypt connections to this peer with SSL/TLS.
#	
#	sslcert=/path/to/ssl/certificate
#			A client SSL certificate to use when connecting to
#			this peer.
#	
#	sslkey=/path/to/ssl/key
#			The private SSL key corresponding to sslcert above.
#			If 'sslkey' is not specified 'sslcert' is assumed to
#			reference a combined file containing both the
#			certificate and the key.
#	
#	sslversion=1|2|3|4
#			The SSL version to use when connecting to this peer
#				1 = automatic (default)
#				2 = SSL v2 only
#				3 = SSL v3 only
#				4 = TLS v1 only
#	
#	sslcipher=...	The list of valid SSL ciphers to use when connecting
#			to this peer.
#	
#	ssloptions=... 	Specify various SSL engine options:
#				NO_SSLv2  Disallow the use of SSLv2
#				NO_SSLv3  Disallow the use of SSLv3
#				NO_TLSv1  Disallow the use of TLSv1
#			See src/ssl_support.c or the OpenSSL documentation for
#			a more complete list.
#	
#	sslcafile=... 	A file containing additional CA certificates to use
#			when verifying the peer certificate.
#	
#	sslcapath=...	A directory containing additional CA certificates to
#			use when verifying the peer certificate.
#	
#	sslcrlfile=... 	A certificate revocation list file to use when
#			verifying the peer certificate.
#	
#	sslflags=...	Specify various flags modifying the SSL implementation:
#	
#			DONT_VERIFY_PEER
#				Accept certificates even if they fail to
#				verify.
#			NO_DEFAULT_CA
#				Don't use the default CA list built in
#				to OpenSSL.
#			DONT_VERIFY_DOMAIN
#				Don't verify the peer certificate
#				matches the server name
#	
#	ssldomain= 	The peer name as advertised in it's certificate.
#			Used for verifying the correctness of the received peer
#			certificate. If not specified the peer hostname will be
#			used.
#	
#	front-end-https
#			Enable the "Front-End-Https: On" header needed when
#			using Squid as a SSL frontend in front of Microsoft OWA.
#			See MS KB document Q307347 for details on this header.
#			If set to auto the header will only be added if the
#			request is forwarded as a https:// URL.
#	
#	
#	==== GENERAL OPTIONS ====
#	
#	connect-timeout=N
#			A peer-specific connect timeout.
#			Also see the peer_connect_timeout directive.
#	
#	connect-fail-limit=N
#			How many times connecting to a peer must fail before
#			it is marked as down. Default is 10.
#	
#	allow-miss	Disable Squid's use of only-if-cached when forwarding
#			requests to siblings. This is primarily useful when
#			icp_hit_stale is used by the sibling. To extensive use
#			of this option may result in forwarding loops, and you
#			should avoid having two-way peerings with this option.
#			For example to deny peer usage on requests from peer
#			by denying cache_peer_access if the source is a peer.
#	
#	max-conn=N	Limit the amount of connections Squid may open to this
#			peer. see also 
#	
#	name=xxx	Unique name for the peer.
#			Required if you have multiple peers on the same host
#			but different ports.
#			This name can be used in cache_peer_access and similar
#			directives to dentify the peer.
#			Can be used by outgoing access controls through the
#			peername ACL type.
#	
#	no-tproxy	Do not use the client-spoof TPROXY support when forwarding
#			requests to this peer. Use normal address selection instead.
#	
#	proxy-only	objects fetched from the peer will not be stored locally.
#	
#Default:
# none

#  TAG: cache_peer_domain
#	Use to limit the domains for which a neighbor cache will be
#	queried.  Usage:
#
#	cache_peer_domain cache-host domain [domain ...]
#	cache_peer_domain cache-host !domain
#
#	For example, specifying
#
#		cache_peer_domain parent.foo.net	.edu
#
#	has the effect such that UDP query packets are sent to
#	'bigserver' only when the requested object exists on a
#	server in the .edu domain.  Prefixing the domainname
#	with '!' means the cache will be queried for objects
#	NOT in that domain.
#
#	NOTE:	* Any number of domains may be given for a cache-host,
#		  either on the same or separate lines.
#		* When multiple domains are given for a particular
#		  cache-host, the first matched domain is applied.
#		* Cache hosts with no domain restrictions are queried
#		  for all requests.
#		* There are no defaults.
#		* There is also a 'cache_peer_access' tag in the ACL
#		  section.
#Default:
# none

#  TAG: cache_peer_access
#	Similar to 'cache_peer_domain' but provides more flexibility by
#	using ACL elements.
#
#	cache_peer_access cache-host allow|deny [!]aclname ...
#
#	The syntax is identical to 'http_access' and the other lists of
#	ACL elements.  See the comments for 'http_access' below, or
#	the Squid FAQ (http://wiki.squid-cache.org/SquidFaq/SquidAcl).
#Default:
# none

#  TAG: neighbor_type_domain
#	usage: neighbor_type_domain neighbor parent|sibling domain domain ...
#
#	Modifying the neighbor type for specific domains is now
#	possible.  You can treat some domains differently than the the
#	default neighbor type specified on the 'cache_peer' line.
#	Normally it should only be necessary to list domains which
#	should be treated differently because the default neighbor type
#	applies for hostnames which do not match domains listed here.
#
#EXAMPLE:
#	cache_peer cache.foo.org parent 3128 3130
#	neighbor_type_domain cache.foo.org sibling .com .net
#	neighbor_type_domain cache.foo.org sibling .au .de
#Default:
# none

#  TAG: dead_peer_timeout	(seconds)
#	This controls how long Squid waits to declare a peer cache
#	as "dead."  If there are no ICP replies received in this
#	amount of time, Squid will declare the peer dead and not
#	expect to receive any further ICP replies.  However, it
#	continues to send ICP queries, and will mark the peer as
#	alive upon receipt of the first subsequent ICP reply.
#
#	This timeout also affects when Squid expects to receive ICP
#	replies from peers.  If more than 'dead_peer' seconds have
#	passed since the last ICP reply was received, Squid will not
#	expect to receive an ICP reply on the next query.  Thus, if
#	your time between requests is greater than this timeout, you
#	will see a lot of requests sent DIRECT to origin servers
#	instead of to your parents.
#Default:
# dead_peer_timeout 10 seconds

#  TAG: forward_max_tries
#	Controls how many different forward paths Squid will try
#	before giving up. See also forward_timeout.
#Default:
# forward_max_tries 10

#  TAG: hierarchy_stoplist
#	A list of words which, if found in a URL, cause the object to
#	be handled directly by this cache.  In other words, use this
#	to not query neighbor caches for certain objects.  You may
#	list this option multiple times.
#
#	Example:
#		hierarchy_stoplist cgi-bin ?
#
#	Note: never_direct overrides this option.
#Default:
# none

# MEMORY CACHE OPTIONS
# -----------------------------------------------------------------------------

#  TAG: cache_mem	(bytes)
#	NOTE: THIS PARAMETER DOES NOT SPECIFY THE MAXIMUM PROCESS SIZE.
#	IT ONLY PLACES A LIMIT ON HOW MUCH ADDITIONAL MEMORY SQUID WILL
#	USE AS A MEMORY CACHE OF OBJECTS. SQUID USES MEMORY FOR OTHER
#	THINGS AS WELL. SEE THE SQUID FAQ SECTION 8 FOR DETAILS.
#
#	'cache_mem' specifies the ideal amount of memory to be used
#	for:
#		* In-Transit objects
#		* Hot Objects
#		* Negative-Cached objects
#
#	Data for these objects are stored in 4 KB blocks.  This
#	parameter specifies the ideal upper limit on the total size of
#	4 KB blocks allocated.  In-Transit objects take the highest
#	priority.
#
#	In-transit objects have priority over the others.  When
#	additional space is needed for incoming data, negative-cached
#	and hot objects will be released.  In other words, the
#	negative-cached and hot objects will fill up any unused space
#	not needed for in-transit objects.
#
#	If circumstances require, this limit will be exceeded.
#	Specifically, if your incoming request rate requires more than
#	'cache_mem' of memory to hold in-transit objects, Squid will
#	exceed this limit to satisfy the new requests.  When the load
#	decreases, blocks will be freed until the high-water mark is
#	reached.  Thereafter, blocks will be used to store hot
#	objects.
#Default:
# cache_mem 256 MB

#  TAG: maximum_object_size_in_memory	(bytes)
#	Objects greater than this size will not be attempted to kept in
#	the memory cache. This should be set high enough to keep objects
#	accessed frequently in memory to improve performance whilst low
#	enough to keep larger objects from hoarding cache_mem.
#Default:
# maximum_object_size_in_memory 512 KB

#  TAG: memory_replacement_policy
#	The memory replacement policy parameter determines which
#	objects are purged from memory when memory space is needed.
#
#	See cache_replacement_policy for details.
#Default:
# memory_replacement_policy lru

# DISK CACHE OPTIONS
# -----------------------------------------------------------------------------

#  TAG: cache_replacement_policy
#	The cache replacement policy parameter determines which
#	objects are evicted (replaced) when disk space is needed.
#
#	    lru       : Squid's original list based LRU policy
#	    heap GDSF : Greedy-Dual Size Frequency
#	    heap LFUDA: Least Frequently Used with Dynamic Aging
#	    heap LRU  : LRU policy implemented using a heap
#
#	Applies to any cache_dir lines listed below this.
#
#	The LRU policies keeps recently referenced objects.
#
#	The heap GDSF policy optimizes object hit rate by keeping smaller
#	popular objects in cache so it has a better chance of getting a
#	hit.  It achieves a lower byte hit rate than LFUDA though since
#	it evicts larger (possibly popular) objects.
#
#	The heap LFUDA policy keeps popular objects in cache regardless of
#	their size and thus optimizes byte hit rate at the expense of
#	hit rate since one large, popular object will prevent many
#	smaller, slightly less popular objects from being cached.
#
#	Both policies utilize a dynamic aging mechanism that prevents
#	cache pollution that can otherwise occur with frequency-based
#	replacement policies.
#
#	NOTE: if using the LFUDA replacement policy you should increase
#	the value of maximum_object_size above its default of 4096 KB to
#	to maximize the potential byte hit rate improvement of LFUDA.
#
#	For more information about the GDSF and LFUDA cache replacement
#	policies see http://www.hpl.hp.com/techreports/1999/HPL-1999-69.html
#	and http://fog.hpl.external.hp.com/techreports/98/HPL-98-173.html.
#Default:
# cache_replacement_policy lru

#  TAG: cache_dir
#	Usage:
#
#	cache_dir Type Directory-Name Fs-specific-data [options]
#
#	You can specify multiple cache_dir lines to spread the
#	cache among different disk partitions.
#
#	Type specifies the kind of storage system to use. Only "ufs"
#	is built by default. To enable any of the other storage systems
#	see the --enable-storeio configure option.
#
#	'Directory' is a top-level directory where cache swap
#	files will be stored.  If you want to use an entire disk
#	for caching, this can be the mount-point directory.
#	The directory must exist and be writable by the Squid
#	process.  Squid will NOT create this directory for you.
#
#	The ufs store type:
#
#	"ufs" is the old well-known Squid storage format that has always
#	been there.
#
#	cache_dir ufs Directory-Name Mbytes L1 L2 [options]
#
#	'Mbytes' is the amount of disk space (MB) to use under this
#	directory.  The default is 100 MB.  Change this to suit your
#	configuration.  Do NOT put the size of your disk drive here.
#	Instead, if you want Squid to use the entire disk drive,
#	subtract 20% and use that value.
#
#	'L1' is the number of first-level subdirectories which
#	will be created under the 'Directory'.  The default is 16.
#
#	'L2' is the number of second-level subdirectories which
#	will be created under each first-level directory.  The default
#	is 256.
#
#	The aufs store type:
#
#	"aufs" uses the same storage format as "ufs", utilizing
#	POSIX-threads to avoid blocking the main Squid process on
#	disk-I/O. This was formerly known in Squid as async-io.
#
#	cache_dir aufs Directory-Name Mbytes L1 L2 [options]
#
#	see argument descriptions under ufs above
#
#	The diskd store type:
#
#	"diskd" uses the same storage format as "ufs", utilizing a
#	separate process to avoid blocking the main Squid process on
#	disk-I/O.
#
#	cache_dir diskd Directory-Name Mbytes L1 L2 [options] [Q1=n] [Q2=n]
#
#	see argument descriptions under ufs above
#
#	Q1 specifies the number of unacknowledged I/O requests when Squid
#	stops opening new files. If this many messages are in the queues,
#	Squid won't open new files. Default is 64
#
#	Q2 specifies the number of unacknowledged messages when Squid
#	starts blocking.  If this many messages are in the queues,
#	Squid blocks until it receives some replies. Default is 72
#
#	When Q1 < Q2 (the default), the cache directory is optimized
#	for lower response time at the expense of a decrease in hit
#	ratio.  If Q1 > Q2, the cache directory is optimized for
#	higher hit ratio at the expense of an increase in response
#	time.
#
#	The coss store type:
#
#	NP: COSS filesystem in Squid-3 has been deemed too unstable for
#	    production use and has thus been removed from this release.
#	    We hope that it can be made usable again soon.
#
#	block-size=n defines the "block size" for COSS cache_dir's.
#	Squid uses file numbers as block numbers.  Since file numbers
#	are limited to 24 bits, the block size determines the maximum
#	size of the COSS partition.  The default is 512 bytes, which
#	leads to a maximum cache_dir size of 512<<24, or 8 GB.  Note
#	you should not change the coss block size after Squid
#	has written some objects to the cache_dir.
#
#	The coss file store has changed from 2.5. Now it uses a file
#	called 'stripe' in the directory names in the config - and
#	this will be created by squid -z.
#
#	Common options:
#
#	no-store, no new objects should be stored to this cache_dir
#
#	max-size=n, refers to the max object size in bytes this cache_dir
#	supports.  It is used to select the cache_dir to store the object.
#	Note: To make optimal use of the max-size limits you should order
#	the cache_dir lines with the smallest max-size value first and the
#	ones with no max-size specification last.
#
#	Note for coss, max-size must be less than COSS_MEMBUF_SZ,
#	which can be changed with the --with-coss-membuf-size=N configure
#	option.
#
#Default:
cache_dir ufs /var/cache/squid/ 256 16 256

#  TAG: store_dir_select_algorithm
#	Set this to 'round-robin' as an alternative.
#Default:
# store_dir_select_algorithm least-load

#  TAG: max_open_disk_fds
#	To avoid having disk as the I/O bottleneck Squid can optionally
#	bypass the on-disk cache if more than this amount of disk file
#	descriptors are open.
#
#	A value of 0 indicates no limit.
#Default:
# max_open_disk_fds 0

#  TAG: minimum_object_size	(bytes)
#	Objects smaller than this size will NOT be saved on disk.  The
#	value is specified in kilobytes, and the default is 0 KB, which
#	means there is no minimum.
#Default:
# minimum_object_size 0 KB

#  TAG: maximum_object_size	(bytes)
#	Objects larger than this size will NOT be saved on disk.  The
#	value is specified in kilobytes, and the default is 4MB.  If
#	you wish to get a high BYTES hit ratio, you should probably
#	increase this (one 32 MB object hit counts for 3200 10KB
#	hits).  If you wish to increase speed more than your want to
#	save bandwidth you should leave this low.
#
#	NOTE: if using the LFUDA replacement policy you should increase
#	this value to maximize the byte hit rate improvement of LFUDA!
#	See replacement_policy below for a discussion of this policy.
#Default:
# maximum_object_size 4096 KB

#  TAG: cache_swap_low	(percent, 0-100)
#Default:
# cache_swap_low 90

#  TAG: cache_swap_high	(percent, 0-100)
#
#	The low- and high-water marks for cache object replacement.
#	Replacement begins when the swap (disk) usage is above the
#	low-water mark and attempts to maintain utilization near the
#	low-water mark.  As swap utilization gets close to high-water
#	mark object eviction becomes more aggressive.  If utilization is
#	close to the low-water mark less replacement is done each time.
#
#	Defaults are 90% and 95%. If you have a large cache, 5% could be
#	hundreds of MB. If this is the case you may wish to set these
#	numbers closer together.
#Default:
# cache_swap_high 95

# LOGFILE OPTIONS
# -----------------------------------------------------------------------------

#  TAG: logformat
#	Usage:
#
#	logformat <name> <format specification>
#
#	Defines an access log format.
#
#	The <format specification> is a string with embedded % format codes
#
#	% format codes all follow the same basic structure where all but
#	the formatcode is optional. Output strings are automatically escaped
#	as required according to their context and the output format
#	modifiers are usually not needed, but can be specified if an explicit
#	output format is desired.
#
#		% ["|[|'|#] [-] [[0]width] [{argument}] formatcode
#
#		"	output in quoted string format
#		[	output in squid text log format as used by log_mime_hdrs
#		#	output in URL quoted format
#		'	output as-is
#
#		-	left aligned
#		width	field width. If starting with 0 the
#			output is zero padded
#		{arg}	argument such as header name etc
#
#	Format codes:
#
#		%	a literal % character
#		>a	Client source IP address
#		>A	Client FQDN
#		>p	Client source port
#		<A	Server IP address or peer name
#		la	Local IP address (http_port)
#		lp	Local port number (http_port)
#		<la	Local IP address of the last server or peer connection
#		<lp     Local port number of the last server or peer connection
#		ts	Seconds since epoch
#		tu	subsecond time (milliseconds)
#		tl	Local time. Optional strftime format argument
#				default %d/%b/%Y:%H:%M:%S %z
#		tg	GMT time. Optional strftime format argument
#				default %d/%b/%Y:%H:%M:%S %z
#		tr	Response time (milliseconds)
#		dt	Total time spent making DNS lookups (milliseconds)
#
#	HTTP cache related format codes:
#
#		[http::]>h	Original request header. Optional header name argument
#				on the format header[:[separator]element]
#		[http::]>ha	The HTTP request headers after adaptation and redirection. 
#				Optional header name argument as for >h
#		[http::]<h	Reply header. Optional header name argument
#				as for >h
#		[http::]un	User name
#		[http::]ul	User name from authentication
#		[http::]ui	User name from ident
#		[http::]us	User name from SSL
#		[http::]ue	User name from external acl helper
#		[http::]>Hs	HTTP status code sent to the client
#		[http::]<Hs	HTTP status code received from the next hop
#		[http::]Ss	Squid request status (TCP_MISS etc)
#		[http::]Sh	Squid hierarchy status (DEFAULT_PARENT etc)
#		[http::]mt	MIME content type
#		[http::]rm	Request method (GET/POST etc)
#		[http::]ru	Request URL
#		[http::]rp	Request URL-Path excluding hostname
#		[http::]rv	Request protocol version
#		[http::]et	Tag returned by external acl
#		[http::]ea	Log string returned by external acl
#		[http::]<st	Sent reply size including HTTP headers
#		[http::]>st	Received request size including HTTP headers. In the
#				case of chunked requests the chunked encoding metadata
#				are not included
#		[http::]>sh	Received HTTP request headers size
#		[http::]<sh	Sent HTTP reply headers size
#		[http::]st	Request+Reply size including HTTP headers
#		[http::]<sH	Reply high offset sent
#		[http::]<sS	Upstream object size
#		[http::]<pt	Peer response time in milliseconds. The timer starts
#				when the last request byte is sent to the next hop
#				and stops when the last response byte is received.
#		[http::]<tt	Total server-side time in milliseconds. The timer 
#				starts with the first connect request (or write I/O)
#				sent to the first selected peer. The timer stops
#				with the last I/O with the last peer.
#
#	If ICAP is enabled, the following two codes become available (as
#	well as ICAP log codes documented with the icap_log option):
#
#		icap::tt        Total ICAP processing time for the HTTP
#				transaction. The timer ticks when ICAP
#				ACLs are checked and when ICAP
#				transaction is in progress.
#
#		icap::<last_h	The header of the last ICAP response
#				related to the HTTP transaction. Like
#				<h, accepts an optional header name
#				argument.  Will not change semantics
#				when multiple ICAP transactions per HTTP
#				transaction are supported.
#
#	If adaptation is enabled the following two codes become available:
#
#		adapt::sum_trs Summed adaptation transaction response
#				times recorded as a comma-separated list in
#				the order of transaction start time. Each time
#				value is recorded as an integer number,
#				representing response time of one or more
#				adaptation (ICAP or eCAP) transaction in
#				milliseconds.  When a failed transaction is
#				being retried or repeated, its time is not
#				logged individually but added to the
#				replacement (next) transaction. See also:
#				adapt::all_trs.
#
#		adapt::all_trs All adaptation transaction response times.
#				Same as adaptation_strs but response times of
#				individual transactions are never added
#				together. Instead, all transaction response
#				times are recorded individually.
#
#	You can prefix adapt::*_trs format codes with adaptation
#	service name in curly braces to record response time(s) specific
#	to that service. For example: %{my_service}adapt::sum_trs
#
#	The default formats available (which do not need re-defining) are:
#
#logformat squid %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %un %Sh/%<A %mt
#logformat squidmime %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %un %Sh/%<A %mt [%>h] [%<h]
#logformat common %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st %Ss:%Sh
#logformat combined %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh
#Default:
# none

#  TAG: access_log
#	These files log client request activities. Has a line every HTTP or
#	ICP request. The format is:
#	access_log <filepath> [<logformat name> [acl acl ...]]
#	access_log none [acl acl ...]]
#
#	Will log to the specified file using the specified format (which
#	must be defined in a logformat directive) those entries which match
#	ALL the acl's specified (which must be defined in acl clauses).
#
#	If no acl is specified, all requests will be logged to this file.
#
#	To disable logging of a request use the filepath "none", in which case
#	a logformat name should not be specified.
#
#	To log the request via syslog specify a filepath of "syslog":
#
#	access_log syslog[:facility.priority] [format [acl1 [acl2 ....]]]
#	where facility could be any of:
#	authpriv, daemon, local0 .. local7 or user.
#
#	And priority could be any of:
#	err, warning, notice, info, debug.
#
#	Default:
#		access_log /var/log/squid/access.log squid
#Default:
access_log /var/log/squid/access.log squid

#  TAG: icap_log
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	ICAP log files record ICAP transaction summaries, one line per
#	transaction.
#
#	The icap_log option format is:
#	icap_log <filepath> [<logformat name> [acl acl ...]]
#	icap_log none [acl acl ...]]
#	
#	Please see access_log option documentation for details. The two
#	kinds of logs share the overall configuration approach and many
#	features.
#
#	ICAP processing of a single HTTP message or transaction may
#	require multiple ICAP transactions.  In such cases, multiple
#	ICAP transaction log lines will correspond to a single access
#	log line.
#
#	ICAP log uses logformat codes that make sense for an ICAP
#	transaction. Header-related codes are applied to the HTTP header
#	embedded in an ICAP server response, with the following caveats:
#	For REQMOD, there is no HTTP response header unless the ICAP
#	server performed request satisfaction. For RESPMOD, the HTTP
#	request header is the header sent to the ICAP server. For
#	OPTIONS, there are no HTTP headers.
#
#	The following format codes are also available for ICAP logs:
#
#		icap::<A	ICAP server IP address. Similar to <A.
#
#		icap::<service_name	ICAP service name from the icap_service
#				option in Squid configuration file.
#
#		icap::ru	ICAP Request-URI. Similar to ru.
#
#		icap::rm	ICAP request method (REQMOD, RESPMOD, or 
#				OPTIONS). Similar to existing rm.
#
#		icap::>st	Bytes sent to the ICAP server (TCP payload
#				only; i.e., what Squid writes to the socket).
#
#		icap::<st	Bytes received from the ICAP server (TCP
#				payload only; i.e., what Squid reads from
#				the socket).
#
#		icap::tr 	Transaction response time (in
#				milliseconds).  The timer starts when
#				the ICAP transaction is created and
#				stops when the transaction is completed.
#				Similar to tr.
#
#		icap::tio	Transaction I/O time (in milliseconds). The
#				timer starts when the first ICAP request
#				byte is scheduled for sending. The timers
#				stops when the last byte of the ICAP response
#				is received.
#
#		icap::to 	Transaction outcome: ICAP_ERR* for all
#				transaction errors, ICAP_OPT for OPTION
#				transactions, ICAP_ECHO for 204
#				responses, ICAP_MOD for message
#				modification, and ICAP_SAT for request
#				satisfaction. Similar to Ss.
#
#		icap::Hs	ICAP response status code. Similar to Hs.
#
#		icap::>h	ICAP request header(s). Similar to >h.
#
#		icap::<h	ICAP response header(s). Similar to <h.
#
#	The default ICAP log format, which can be used without an explicit
#	definition, is called icap_squid:
#
#logformat icap_squid %ts.%03tu %6icap::tr %>a %icap::to/%03icap::Hs %icap::<size %icap::rm %icap::ru% %un -/%icap::<A -
#
#	See also: logformat, log_icap, and %icap::<last_h 
#Default:
# none

#  TAG: log_access	allow|deny acl acl...
#	This options allows you to control which requests gets logged
#	to access.log (see access_log directive). Requests denied for
#	logging will also not be accounted for in performance counters.
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# none

#  TAG: log_icap
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	This options allows you to control which requests get logged
#	to icap.log. See the icap_log directive for ICAP log details.
#Default:
# none

#  TAG: cache_store_log
#	Logs the activities of the storage manager.  Shows which
#	objects are ejected from the cache, and which objects are
#	saved and for how long.  To disable, enter "none" or remove the line.
#	There are not really utilities to analyze this data, so you can safely
#	disable it.
#
#	Example:
#		cache_store_log /var/log/squid/store.log
#Default:
cache_store_log /var/log/squid/store.log

#  TAG: cache_swap_state
#	Location for the cache "swap.state" file. This index file holds
#	the metadata of objects saved on disk.  It is used to rebuild
#	the cache during startup.  Normally this file resides in each
#	'cache_dir' directory, but you may specify an alternate
#	pathname here.  Note you must give a full filename, not just
#	a directory. Since this is the index for the whole object
#	list you CANNOT periodically rotate it!
#
#	If %s can be used in the file name it will be replaced with a
#	a representation of the cache_dir name where each / is replaced
#	with '.'. This is needed to allow adding/removing cache_dir
#	lines when cache_swap_log is being used.
#
#	If have more than one 'cache_dir', and %s is not used in the name
#	these swap logs will have names such as:
#
#		cache_swap_log.00
#		cache_swap_log.01
#		cache_swap_log.02
#
#	The numbered extension (which is added automatically)
#	corresponds to the order of the 'cache_dir' lines in this
#	configuration file.  If you change the order of the 'cache_dir'
#	lines in this file, these index files will NOT correspond to
#	the correct 'cache_dir' entry (unless you manually rename
#	them).  We recommend you do NOT use this option.  It is
#	better to keep these index files in each 'cache_dir' directory.
#Default:
# none

#  TAG: logfile_rotate
#	Specifies the number of logfile rotations to make when you
#	type 'squid -k rotate'. The default is 10, which will rotate
#	with extensions 0 through 9. Setting logfile_rotate to 0 will
#	disable the file name rotation, but the logfiles are still closed
#	and re-opened. This will enable you to rename the logfiles
#	yourself just before sending the rotate signal.
#
#	Note, the 'squid -k rotate' command normally sends a USR1
#	signal to the running squid process.  In certain situations
#	(e.g. on Linux with Async I/O), USR1 is used for other
#	purposes, so -k rotate uses another signal.  It is best to get
#	in the habit of using 'squid -k rotate' instead of 'kill -USR1
#	<pid>'.
#
#	Note, from Squid-3.1 this option has no effect on the cache.log,
#	that log can be rotated separately by using debug_options
#Default:
logfile_rotate 0

#  TAG: emulate_httpd_log	on|off
#	The Cache can emulate the log file format which many 'httpd'
#	programs use.  To disable/enable this emulation, set
#	emulate_httpd_log to 'off' or 'on'.  The default
#	is to use the native log format since it includes useful
#	information Squid-specific log analyzers use.
#Default:
# emulate_httpd_log off

#  TAG: log_ip_on_direct	on|off
#	Log the destination IP address in the hierarchy log tag when going
#	direct. Earlier Squid versions logged the hostname here. If you
#	prefer the old way set this to off.
#Default:
# log_ip_on_direct on

#  TAG: mime_table
#	Pathname to Squid's MIME table. You shouldn't need to change
#	this, but the default file contains examples and formatting
#	information if you do.
#Default:
# mime_table /etc/squid/mime.conf

#  TAG: log_mime_hdrs	on|off
#	The Cache can record both the request and the response MIME
#	headers for each HTTP transaction.  The headers are encoded
#	safely and will appear as two bracketed fields at the end of
#	the access log (for either the native or httpd-emulated log
#	formats).  To enable this logging set log_mime_hdrs to 'on'.
#Default:
# log_mime_hdrs off

#  TAG: useragent_log
# Note: This option is only available if Squid is rebuilt with the
#       --enable-useragent-log option
#
#	Squid will write the User-Agent field from HTTP requests
#	to the filename specified here.  By default useragent_log
#	is disabled.
#Default:
# none

#  TAG: referer_log
# Note: This option is only available if Squid is rebuilt with the
#       --enable-referer-log option
#
#	Squid will write the Referer field from HTTP requests to the
#	filename specified here.  By default referer_log is disabled.
#	Note that "referer" is actually a misspelling of "referrer"
#	however the misspelt version has been accepted into the HTTP RFCs
#	and we accept both.
#Default:
# none

#  TAG: pid_filename
#	A filename to write the process-id to.  To disable, enter "none".
#Default:
pid_filename /var/run/squid/squid.pid

#  TAG: log_fqdn	on|off
#	Turn this on if you wish to log fully qualified domain names
#	in the access.log. To do this Squid does a DNS lookup of all
#	IP's connecting to it. This can (in some situations) increase
#	latency, which makes your cache seem slower for interactive
#	browsing.
#Default:
# log_fqdn off

#  TAG: client_netmask
#	A netmask for client addresses in logfiles and cachemgr output.
#	Change this to protect the privacy of your cache clients.
#	A netmask of 255.255.255.0 will log all IP's in that range with
#	the last digit set to '0'.
#Default:
# client_netmask no_addr

#  TAG: forward_log
# Note: This option is only available if Squid is rebuilt with the
#       -DWIP_FWD_LOG define
#
#	Logs the server-side requests.
#
#	This is currently work in progress.
#Default:
# none

#  TAG: strip_query_terms
#	By default, Squid strips query terms from requested URLs before
#	logging.  This protects your user's privacy.
#Default:
# strip_query_terms on

#  TAG: buffered_logs	on|off
#	cache.log log file is written with stdio functions, and as such
#	it can be buffered or unbuffered. By default it will be unbuffered.
#	Buffering it can speed up the writing slightly (though you are
#	unlikely to need to worry unless you run with tons of debugging
#	enabled in which case performance will suffer badly anyway..).
#Default:
# buffered_logs off

#  TAG: netdb_filename
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icmp option
#
#	A filename where Squid stores it's netdb state between restarts.
#	To disable, enter "none".
#Default:
# netdb_filename /var/log/squid/netdb.state

# OPTIONS FOR TROUBLESHOOTING
# -----------------------------------------------------------------------------

#  TAG: cache_log
#	Cache logging file. This is where general information about
#	your cache's behavior goes. You can increase the amount of data
#	logged to this file and how often its rotated with "debug_options"
#Default:
cache_log /var/log/squid/cache.log

#  TAG: debug_options
#	Logging options are set as section,level where each source file
#	is assigned a unique section.  Lower levels result in less
#	output,  Full debugging (level 9) can result in a very large
#	log file, so be careful.
#
#	The magic word "ALL" sets debugging levels for all sections.
#	We recommend normally running with "ALL,1".
#
#	The rotate=N option can be used to keep more or less of these logs
#	than would otherwise be kept by logfile_rotate.
#	For most uses a single log should be enough to monitor current
#	events affecting Squid.
#Default:
# debug_options ALL,1

#  TAG: coredump_dir
#	By default Squid leaves core files in the directory from where
#	it was started. If you set 'coredump_dir' to a directory
#	that exists, Squid will chdir() to that directory at startup
#	and coredump files will be left there.
#
#Default:
# coredump_dir none
#

# Leave coredumps in the first cache dir
coredump_dir /var/log/squid/cache

# OPTIONS FOR FTP GATEWAYING
# -----------------------------------------------------------------------------

#  TAG: ftp_user
#	If you want the anonymous login password to be more informative
#	(and enable the use of picky ftp servers), set this to something
#	reasonable for your domain, like wwwuser@somewhere.net
#
#	The reason why this is domainless by default is the
#	request can be made on the behalf of a user in any domain,
#	depending on how the cache is used.
#	Some ftp server also validate the email address is valid
#	(for example perl.com).
#Default:
# ftp_user Squid@

#  TAG: ftp_list_width
#	Sets the width of ftp listings. This should be set to fit in
#	the width of a standard browser. Setting this too small
#	can cut off long filenames when browsing ftp sites.
#Default:
# ftp_list_width 32

#  TAG: ftp_passive
#	If your firewall does not allow Squid to use passive
#	connections, turn off this option.
#
#	Use of ftp_epsv_all option requires this to be ON.
#Default:
# ftp_passive on

#  TAG: ftp_epsv_all
#	FTP Protocol extensions permit the use of a special "EPSV ALL" command.
#
#	NATs may be able to put the connection on a "fast path" through the
#	translator, as the EPRT command will never be used and therefore,
#	translation of the data portion of the segments will never be needed.
#
#	When a client only expects to do two-way FTP transfers this may be
#	useful.
#	If squid finds that it must do a three-way FTP transfer after issuing
#	an EPSV ALL command, the FTP session will fail.
#
#	If you have any doubts about this option do not use it.
#	Squid will nicely attempt all other connection methods.
#
#	Requires ftp_passive to be ON (default) for any effect.
#Default:
# ftp_epsv_all off

#  TAG: ftp_epsv
#	FTP Protocol extensions permit the use of a special "EPSV" command.
#
#	NATs may be able to put the connection on a "fast path" through the
#	translator using EPSV, as the EPRT command will never be used
#	and therefore, translation of the data portion of the segments 
#	will never be needed.
#
#	Turning this OFF will prevent EPSV being attempted.
#	WARNING: Doing so will convert Squid back to the old behavior with all
#	the related problems with external NAT devices/layers.
#
#	Requires ftp_passive to be ON (default) for any effect.
#Default:
# ftp_epsv on

#  TAG: ftp_eprt
#	FTP Protocol extensions permit the use of a special "EPRT" command.
#
#	This extension provides a protocol neutral alternative to the
#	IPv4-only PORT command. When supported it enables active FTP data
#	channels over IPv6 and efficient NAT handling.
#
#	Turning this OFF will prevent EPRT being attempted and will skip
#	straight to using PORT for IPv4 servers.
#
#	Some devices are known to not handle this extension correctly and
#	may result in crashes. Devices which suport EPRT enough to fail
#	cleanly will result in Squid attempting PORT anyway. This directive
#	should only be disabled when EPRT results in device failures.
#
#	WARNING: Doing so will convert Squid back to the old behavior with all
#	the related problems with external NAT devices/layers and IPv4-only FTP.
#Default:
# ftp_eprt on

#  TAG: ftp_sanitycheck
#	For security and data integrity reasons Squid by default performs
#	sanity checks of the addresses of FTP data connections ensure the
#	data connection is to the requested server. If you need to allow
#	FTP connections to servers using another IP address for the data
#	connection turn this off.
#Default:
# ftp_sanitycheck on

#  TAG: ftp_telnet_protocol
#	The FTP protocol is officially defined to use the telnet protocol
#	as transport channel for the control connection. However, many
#	implementations are broken and does not respect this aspect of
#	the FTP protocol.
#
#	If you have trouble accessing files with ASCII code 255 in the
#	path or similar problems involving this ASCII code you can
#	try setting this directive to off. If that helps, report to the
#	operator of the FTP server in question that their FTP server
#	is broken and does not follow the FTP standard.
#Default:
# ftp_telnet_protocol on

# OPTIONS FOR EXTERNAL SUPPORT PROGRAMS
# -----------------------------------------------------------------------------

#  TAG: diskd_program
#	Specify the location of the diskd executable.
#	Note this is only useful if you have compiled in
#	diskd as one of the store io modules.
#Default:
# diskd_program /usr/libexec/diskd

#  TAG: unlinkd_program
#	Specify the location of the executable for file deletion process.
#Default:
# unlinkd_program /usr/libexec/unlinkd

#  TAG: pinger_program
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icmp option
#
#	Specify the location of the executable for the pinger process.
#Default:
# pinger_program /usr/libexec/pinger

#  TAG: pinger_enable
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icmp option
#
#	Control whether the pinger is active at run-time.
#	Enables turning ICMP pinger on and off with a simple
#	squid -k reconfigure.
#Default:
# pinger_enable off

# OPTIONS FOR URL REWRITING
# -----------------------------------------------------------------------------

#  TAG: url_rewrite_program
#	Specify the location of the executable URL rewriter to use.
#	Since they can perform almost any function there isn't one included.
#
#	For each requested URL, the rewriter will receive on line with the format
#
#	URL <SP> client_ip "/" fqdn <SP> user <SP> method [<SP> kvpairs]<NL>
#
#	In the future, the rewriter interface will be extended with
#	key=value pairs ("kvpairs" shown above).  Rewriter programs
#	should be prepared to receive and possibly ignore additional
#	whitespace-separated tokens on each input line.
#
#	And the rewriter may return a rewritten URL. The other components of
#	the request line does not need to be returned (ignored if they are).
#
#	The rewriter can also indicate that a client-side redirect should
#	be performed to the new URL. This is done by prefixing the returned
#	URL with "301:" (moved permanently) or 302: (moved temporarily), etc.
#
#	By default, a URL rewriter is not used.
#Default:
# none

#  TAG: url_rewrite_children
#	The number of redirector processes to spawn. If you start
#	too few Squid will have to wait for them to process a backlog of
#	URLs, slowing it down. If you start too many they will use RAM
#	and other system resources.
#Default:
# url_rewrite_children 5

#  TAG: url_rewrite_concurrency
#	The number of requests each redirector helper can handle in
#	parallel. Defaults to 0 which indicates the redirector
#	is a old-style single threaded redirector.
#
#	When this directive is set to a value >= 1 then the protocol
#	used to communicate with the helper is modified to include
#	a request ID in front of the request/response. The request
#	ID from the request must be echoed back with the response
#	to that request.
#Default:
# url_rewrite_concurrency 0

#  TAG: url_rewrite_host_header
#	By default Squid rewrites any Host: header in redirected
#	requests.  If you are running an accelerator this may
#	not be a wanted effect of a redirector.
#
#	WARNING: Entries are cached on the result of the URL rewriting
#	process, so be careful if you have domain-virtual hosts.
#Default:
# url_rewrite_host_header on

#  TAG: url_rewrite_access
#	If defined, this access list specifies which requests are
#	sent to the redirector processes.  By default all requests
#	are sent.
#
#	This clause supports both fast and slow acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# none

#  TAG: url_rewrite_bypass
#	When this is 'on', a request will not go through the
#	redirector if all redirectors are busy.  If this is 'off'
#	and the redirector queue grows too large, Squid will exit
#	with a FATAL error and ask you to increase the number of
#	redirectors.  You should only enable this if the redirectors
#	are not critical to your caching system.  If you use
#	redirectors for access control, and you enable this option,
#	users may have access to pages they should not
#	be allowed to request.
#Default:
# url_rewrite_bypass off

# OPTIONS FOR TUNING THE CACHE
# -----------------------------------------------------------------------------

#  TAG: cache
#	A list of ACL elements which, if matched and denied, cause the request to
#	not be satisfied from the cache and the reply to not be cached.
#	In other words, use this to force certain objects to never be cached.
#
#	You must use the words 'allow' or 'deny' to indicate whether items
#	matching the ACL should be allowed or denied into the cache.
#
#	Default is to allow all to be cached.
#
#	This clause supports both fast and slow acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# none

#  TAG: refresh_pattern
#	usage: refresh_pattern [-i] regex min percent max [options]
#
#	By default, regular expressions are CASE-SENSITIVE.  To make
#	them case-insensitive, use the -i option.
#
#	'Min' is the time (in minutes) an object without an explicit
#	expiry time should be considered fresh. The recommended
#	value is 0, any higher values may cause dynamic applications
#	to be erroneously cached unless the application designer
#	has taken the appropriate actions.
#
#	'Percent' is a percentage of the objects age (time since last
#	modification age) an object without explicit expiry time
#	will be considered fresh.
#
#	'Max' is an upper limit on how long objects without an explicit
#	expiry time will be considered fresh.
#
#	options: override-expire
#		 override-lastmod
#		 reload-into-ims
#		 ignore-reload
#		 ignore-no-cache
#		 ignore-no-store
#		 ignore-must-revalidate
#		 ignore-private
#		 ignore-auth
#		 refresh-ims
#
#		override-expire enforces min age even if the server
#		sent an explicit expiry time (e.g., with the
#		Expires: header or Cache-Control: max-age). Doing this
#		VIOLATES the HTTP standard.  Enabling this feature
#		could make you liable for problems which it causes.
#
#		Note: override-expire does not enforce staleness - it only extends
#		freshness / min. If the server returns a Expires time which
#		is longer than your max time, Squid will still consider
#		the object fresh for that period of time.
#
#		override-lastmod enforces min age even on objects
#		that were modified recently.
#
#		reload-into-ims changes client no-cache or ``reload''
#		to If-Modified-Since requests. Doing this VIOLATES the
#		HTTP standard. Enabling this feature could make you
#		liable for problems which it causes.
#
#		ignore-reload ignores a client no-cache or ``reload''
#		header. Doing this VIOLATES the HTTP standard. Enabling
#		this feature could make you liable for problems which
#		it causes.
#
#		ignore-no-cache ignores any ``Pragma: no-cache'' and
#		``Cache-control: no-cache'' headers received from a server.
#		The HTTP RFC never allows the use of this (Pragma) header
#		from a server, only a client, though plenty of servers
#		send it anyway.
#
#		ignore-no-store ignores any ``Cache-control: no-store''
#		headers received from a server. Doing this VIOLATES
#		the HTTP standard. Enabling this feature could make you
#		liable for problems which it causes.
#
#		ignore-must-revalidate ignores any ``Cache-Control: must-revalidate``
#		headers received from a server. Doing this VIOLATES
#		the HTTP standard. Enabling this feature could make you
#		liable for problems which it causes.
#
#		ignore-private ignores any ``Cache-control: private''
#		headers received from a server. Doing this VIOLATES
#		the HTTP standard. Enabling this feature could make you
#		liable for problems which it causes.
#
#		ignore-auth caches responses to requests with authorization,
#		as if the originserver had sent ``Cache-control: public''
#		in the response header. Doing this VIOLATES the HTTP standard.
#		Enabling this feature could make you liable for problems which
#		it causes.
#
#		refresh-ims causes squid to contact the origin server
#		when a client issues an If-Modified-Since request. This
#		ensures that the client will receive an updated version
#		if one is available.
#
#	Basically a cached object is:
#
#		FRESH if expires < now, else STALE
#		STALE if age > max
#		FRESH if lm-factor < percent, else STALE
#		FRESH if age < min
#		else STALE
#
#	The refresh_pattern lines are checked in the order listed here.
#	The first entry which matches is used.  If none of the entries
#	match the default will be used.
#
#	Note, you must uncomment all the default lines if you want
#	to change one. The default setting is only active if none is
#	used.
#
#

# Add any of your own refresh_pattern entries above these.
refresh_pattern ^ftp:		1440	20%	10080
refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
refresh_pattern .		0	20%	4320

#  TAG: quick_abort_min	(KB)
#Default:
# quick_abort_min 16 KB

#  TAG: quick_abort_max	(KB)
#Default:
# quick_abort_max 16 KB

#  TAG: quick_abort_pct	(percent)
#	The cache by default continues downloading aborted requests
#	which are almost completed (less than 16 KB remaining). This
#	may be undesirable on slow (e.g. SLIP) links and/or very busy
#	caches.  Impatient users may tie up file descriptors and
#	bandwidth by repeatedly requesting and immediately aborting
#	downloads.
#
#	When the user aborts a request, Squid will check the
#	quick_abort values to the amount of data transfered until
#	then.
#
#	If the transfer has less than 'quick_abort_min' KB remaining,
#	it will finish the retrieval.
#
#	If the transfer has more than 'quick_abort_max' KB remaining,
#	it will abort the retrieval.
#
#	If more than 'quick_abort_pct' of the transfer has completed,
#	it will finish the retrieval.
#
#	If you do not want any retrieval to continue after the client
#	has aborted, set both 'quick_abort_min' and 'quick_abort_max'
#	to '0 KB'.
#
#	If you want retrievals to always continue if they are being
#	cached set 'quick_abort_min' to '-1 KB'.
#Default:
# quick_abort_pct 95

#  TAG: read_ahead_gap	buffer-size
#	The amount of data the cache will buffer ahead of what has been
#	sent to the client when retrieving an object from another server.
#Default:
# read_ahead_gap 16 KB

#  TAG: negative_ttl	time-units
#	Set the Default Time-to-Live (TTL) for failed requests.
#	Certain types of failures (such as "connection refused" and
#	"404 Not Found") are able to be negatively-cached for a short time.
#	Modern web servers should provide Expires: header, however if they
#	do not this can provide a minimum TTL.
#	The default is not to cache errors with unknown expiry details.
#
#	Note that this is different from negative caching of DNS lookups.
#
#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
#	this feature could make you liable for problems which it
#	causes.
#Default:
# negative_ttl 0 seconds

#  TAG: positive_dns_ttl	time-units
#	Upper limit on how long Squid will cache positive DNS responses.
#	Default is 6 hours (360 minutes). This directive must be set
#	larger than negative_dns_ttl.
#Default:
# positive_dns_ttl 6 hours

#  TAG: negative_dns_ttl	time-units
#	Time-to-Live (TTL) for negative caching of failed DNS lookups.
#	This also sets the lower cache limit on positive lookups.
#	Minimum value is 1 second, and it is not recommendable to go
#	much below 10 seconds.
#Default:
# negative_dns_ttl 1 minutes

#  TAG: range_offset_limit	(bytes)
#	Sets a upper limit on how far into the the file a Range request
#	may be to cause Squid to prefetch the whole file. If beyond this
#	limit Squid forwards the Range request as it is and the result
#	is NOT cached.
#
#	This is to stop a far ahead range request (lets say start at 17MB)
#	from making Squid fetch the whole object up to that point before
#	sending anything to the client.
#
#	A value of 0 causes Squid to never fetch more than the
#	client requested. (default)
#
#	A value of -1 causes Squid to always fetch the object from the
#	beginning so it may cache the result. (2.0 style)
#
#	NP: Using -1 here will override any quick_abort settings that may
#	    otherwise apply to the range request. The range request will
#	    be fully fetched from start to finish regardless of the client
#	    actions. This affects bandwidth usage.
#Default:
# range_offset_limit 0 KB

#  TAG: minimum_expiry_time	(seconds)
#	The minimum caching time according to (Expires - Date)
#	Headers Squid honors if the object can't be revalidated
#	defaults to 60 seconds. In reverse proxy environments it
#	might be desirable to honor shorter object lifetimes. It
#	is most likely better to make your server return a
#	meaningful Last-Modified header however. In ESI environments
#	where page fragments often have short lifetimes, this will
#	often be best set to 0.
#Default:
# minimum_expiry_time 60 seconds

#  TAG: store_avg_object_size	(kbytes)
#	Average object size, used to estimate number of objects your
#	cache can hold.  The default is 13 KB.
#Default:
# store_avg_object_size 13 KB

#  TAG: store_objects_per_bucket
#	Target number of objects per bucket in the store hash table.
#	Lowering this value increases the total number of buckets and
#	also the storage maintenance rate.  The default is 20.
#Default:
# store_objects_per_bucket 20

# HTTP OPTIONS
# -----------------------------------------------------------------------------

#  TAG: request_header_max_size	(KB)
#	This specifies the maximum size for HTTP headers in a request.
#	Request headers are usually relatively small (about 512 bytes).
#	Placing a limit on the request header size will catch certain
#	bugs (for example with persistent connections) and possibly
#	buffer-overflow or denial-of-service attacks.
#Default:
# request_header_max_size 64 KB

#  TAG: reply_header_max_size	(KB)
#	This specifies the maximum size for HTTP headers in a reply.
#	Reply headers are usually relatively small (about 512 bytes).
#	Placing a limit on the reply header size will catch certain
#	bugs (for example with persistent connections) and possibly
#	buffer-overflow or denial-of-service attacks.
#Default:
# reply_header_max_size 64 KB

#  TAG: request_body_max_size	(bytes)
#	This specifies the maximum size for an HTTP request body.
#	In other words, the maximum size of a PUT/POST request.
#	A user who attempts to send a request with a body larger
#	than this limit receives an "Invalid Request" error message.
#	If you set this parameter to a zero (the default), there will
#	be no limit imposed.
#Default:
# request_body_max_size 0 KB

#  TAG: client_request_buffer_max_size	(bytes)
#	This specifies the maximum buffer size of a client request.
#	It prevents squid eating too much memory when somebody uploads
#	a large file.
#Default:
# client_request_buffer_max_size 512 KB

#  TAG: chunked_request_body_max_size	(bytes)
#	A broken or confused HTTP/1.1 client may send a chunked HTTP
#	request to Squid. Squid does not have full support for that
#	feature yet. To cope with such requests, Squid buffers the
#	entire request and then dechunks request body to create a
#	plain HTTP/1.0 request with a known content length. The plain
#	request is then used by the rest of Squid code as usual.
#
#	The option value specifies the maximum size of the buffer used
#	to hold the request before the conversion. If the chunked
#	request size exceeds the specified limit, the conversion
#	fails, and the client receives an "unsupported request" error,
#	as if dechunking was disabled.
#
#	Dechunking is enabled by default. To disable conversion of
#	chunked requests, set the maximum to zero.
#
#	Request dechunking feature and this option in particular are a
#	temporary hack. When chunking requests and responses are fully
#	supported, there will be no need to buffer a chunked request.
#Default:
# chunked_request_body_max_size 64 KB

#  TAG: broken_posts
#	A list of ACL elements which, if matched, causes Squid to send
#	an extra CRLF pair after the body of a PUT/POST request.
#
#	Some HTTP servers has broken implementations of PUT/POST,
#	and rely on an extra CRLF pair sent by some WWW clients.
#
#	Quote from RFC2616 section 4.1 on this matter:
#
#	  Note: certain buggy HTTP/1.0 client implementations generate an
#	  extra CRLF's after a POST request. To restate what is explicitly
#	  forbidden by the BNF, an HTTP/1.1 client must not preface or follow
#	  a request with an extra CRLF.
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#
#Example:
# acl buggy_server url_regex ^http://....
# broken_posts allow buggy_server
#Default:
# none

#  TAG: icap_uses_indirect_client	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-follow-x-forwarded-for and --enable-icap-client option
#
#	Controls whether the indirect client IP address (instead of the direct
#	client IP address) is passed to adaptation services.
#
#	See also: follow_x_forwarded_for adaptation_send_client_ip
#Default:
# icap_uses_indirect_client on

#  TAG: via	on|off
#	If set (default), Squid will include a Via header in requests and
#	replies as required by RFC2616.
#Default:
# via on

#  TAG: ie_refresh	on|off
#	Microsoft Internet Explorer up until version 5.5 Service
#	Pack 1 has an issue with transparent proxies, wherein it
#	is impossible to force a refresh.  Turning this on provides
#	a partial fix to the problem, by causing all IMS-REFRESH
#	requests from older IE versions to check the origin server
#	for fresh content.  This reduces hit ratio by some amount
#	(~10% in my experience), but allows users to actually get
#	fresh content when they want it.  Note because Squid
#	cannot tell if the user is using 5.5 or 5.5SP1, the behavior
#	of 5.5 is unchanged from old versions of Squid (i.e. a
#	forced refresh is impossible).  Newer versions of IE will,
#	hopefully, continue to have the new behavior and will be
#	handled based on that assumption.  This option defaults to
#	the old Squid behavior, which is better for hit ratios but
#	worse for clients using IE, if they need to be able to
#	force fresh content.
#Default:
# ie_refresh off

#  TAG: vary_ignore_expire	on|off
#	Many HTTP servers supporting Vary gives such objects
#	immediate expiry time with no cache-control header
#	when requested by a HTTP/1.0 client. This option
#	enables Squid to ignore such expiry times until
#	HTTP/1.1 is fully implemented.
#
#	WARNING: If turned on this may eventually cause some
#	varying objects not intended for caching to get cached.
#Default:
# vary_ignore_expire off

#  TAG: request_entities
#	Squid defaults to deny GET and HEAD requests with request entities,
#	as the meaning of such requests are undefined in the HTTP standard
#	even if not explicitly forbidden.
#
#	Set this directive to on if you have clients which insists
#	on sending request entities in GET or HEAD requests. But be warned
#	that there is server software (both proxies and web servers) which
#	can fail to properly process this kind of request which may make you
#	vulnerable to cache pollution attacks if enabled.
#Default:
# request_entities off

#  TAG: request_header_access
#	Usage: request_header_access header_name allow|deny [!]aclname ...
#
#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
#	this feature could make you liable for problems which it
#	causes.
#
#	This option replaces the old 'anonymize_headers' and the
#	older 'http_anonymizer' option with something that is much
#	more configurable. This new method creates a list of ACLs
#	for each header, allowing you very fine-tuned header
#	mangling.
#
#	This option only applies to request headers, i.e., from the
#	client to the server.
#
#	You can only specify known headers for the header name.
#	Other headers are reclassified as 'Other'. You can also
#	refer to all the headers with 'All'.
#
#	For example, to achieve the same behavior as the old
#	'http_anonymizer standard' option, you should use:
#
#		request_header_access From deny all
#		request_header_access Referer deny all
#		request_header_access Server deny all
#		request_header_access User-Agent deny all
#		request_header_access WWW-Authenticate deny all
#		request_header_access Link deny all
#
#	Or, to reproduce the old 'http_anonymizer paranoid' feature
#	you should use:
#
#		request_header_access Allow allow all
#		request_header_access Authorization allow all
#		request_header_access WWW-Authenticate allow all
#		request_header_access Proxy-Authorization allow all
#		request_header_access Proxy-Authenticate allow all
#		request_header_access Cache-Control allow all
#		request_header_access Content-Encoding allow all
#		request_header_access Content-Length allow all
#		request_header_access Content-Type allow all
#		request_header_access Date allow all
#		request_header_access Expires allow all
#		request_header_access Host allow all
#		request_header_access If-Modified-Since allow all
#		request_header_access Last-Modified allow all
#		request_header_access Location allow all
#		request_header_access Pragma allow all
#		request_header_access Accept allow all
#		request_header_access Accept-Charset allow all
#		request_header_access Accept-Encoding allow all
#		request_header_access Accept-Language allow all
#		request_header_access Content-Language allow all
#		request_header_access Mime-Version allow all
#		request_header_access Retry-After allow all
#		request_header_access Title allow all
#		request_header_access Connection allow all
#		request_header_access All deny all
#
#	although many of those are HTTP reply headers, and so should be
#	controlled with the reply_header_access directive.
#
#	By default, all headers are allowed (no anonymizing is
#	performed).
#Default:
# none

#  TAG: reply_header_access
#	Usage: reply_header_access header_name allow|deny [!]aclname ...
#
#	WARNING: Doing this VIOLATES the HTTP standard.  Enabling
#	this feature could make you liable for problems which it
#	causes.
#
#	This option only applies to reply headers, i.e., from the
#	server to the client.
#
#	This is the same as request_header_access, but in the other
#	direction.
#
#	This option replaces the old 'anonymize_headers' and the
#	older 'http_anonymizer' option with something that is much
#	more configurable. This new method creates a list of ACLs
#	for each header, allowing you very fine-tuned header
#	mangling.
#
#	You can only specify known headers for the header name.
#	Other headers are reclassified as 'Other'. You can also
#	refer to all the headers with 'All'.
#
#	For example, to achieve the same behavior as the old
#	'http_anonymizer standard' option, you should use:
#
#		reply_header_access From deny all
#		reply_header_access Referer deny all
#		reply_header_access Server deny all
#		reply_header_access User-Agent deny all
#		reply_header_access WWW-Authenticate deny all
#		reply_header_access Link deny all
#
#	Or, to reproduce the old 'http_anonymizer paranoid' feature
#	you should use:
#
#		reply_header_access Allow allow all
#		reply_header_access Authorization allow all
#		reply_header_access WWW-Authenticate allow all
#		reply_header_access Proxy-Authorization allow all
#		reply_header_access Proxy-Authenticate allow all
#		reply_header_access Cache-Control allow all
#		reply_header_access Content-Encoding allow all
#		reply_header_access Content-Length allow all
#		reply_header_access Content-Type allow all
#		reply_header_access Date allow all
#		reply_header_access Expires allow all
#		reply_header_access Host allow all
#		reply_header_access If-Modified-Since allow all
#		reply_header_access Last-Modified allow all
#		reply_header_access Location allow all
#		reply_header_access Pragma allow all
#		reply_header_access Accept allow all
#		reply_header_access Accept-Charset allow all
#		reply_header_access Accept-Encoding allow all
#		reply_header_access Accept-Language allow all
#		reply_header_access Content-Language allow all
#		reply_header_access Mime-Version allow all
#		reply_header_access Retry-After allow all
#		reply_header_access Title allow all
#		reply_header_access Connection allow all
#		reply_header_access All deny all
#
#	although the HTTP request headers won't be usefully controlled
#	by this directive -- see request_header_access for details.
#
#	By default, all headers are allowed (no anonymizing is
#	performed).
#Default:
# none

#  TAG: request_header_replace
#	Usage:   request_header_replace header_name message
#	Example: request_header_replace User-Agent Nutscrape/1.0 (CP/M; 8-bit)
#
#	This option allows you to change the contents of headers
#	denied with request_header_access above, by replacing them
#	with some fixed string. This replaces the old fake_user_agent
#	option.
#
#	This only applies to request headers, not reply headers.
#
#	By default, headers are removed if denied.
#Default:
# none

#  TAG: reply_header_replace
#        Usage:   reply_header_replace header_name message
#        Example: reply_header_replace Server Foo/1.0
#
#        This option allows you to change the contents of headers
#        denied with reply_header_access above, by replacing them
#        with some fixed string.
#
#        This only applies to reply headers, not request headers.
#
#        By default, headers are removed if denied.
#Default:
# none

#  TAG: relaxed_header_parser	on|off|warn
#	In the default "on" setting Squid accepts certain forms
#	of non-compliant HTTP messages where it is unambiguous
#	what the sending application intended even if the message
#	is not correctly formatted. The messages is then normalized
#	to the correct form when forwarded by Squid.
#
#	If set to "warn" then a warning will be emitted in cache.log
#	each time such HTTP error is encountered.
#
#	If set to "off" then such HTTP errors will cause the request
#	or response to be rejected.
#Default:
# relaxed_header_parser on

#  TAG: ignore_expect_100	on|off
#	This option makes Squid ignore any Expect: 100-continue header present
#	in the request. RFC 2616 requires that Squid being unable to satisfy
#	the response expectation MUST return a 417 error.
#
#	Note: Enabling this is a HTTP protocol violation, but some clients may
#	not handle it well..
#Default:
# ignore_expect_100 off

# TIMEOUTS
# -----------------------------------------------------------------------------

#  TAG: forward_timeout	time-units
#	This parameter specifies how long Squid should at most attempt in
#	finding a forwarding path for the request before giving up.
#Default:
# forward_timeout 4 minutes

#  TAG: connect_timeout	time-units
#	This parameter specifies how long to wait for the TCP connect to
#	the requested server or peer to complete before Squid should
#	attempt to find another path where to forward the request.
#Default:
# connect_timeout 1 minute

#  TAG: peer_connect_timeout	time-units
#	This parameter specifies how long to wait for a pending TCP
#	connection to a peer cache.  The default is 30 seconds.   You
#	may also set different timeout values for individual neighbors
#	with the 'connect-timeout' option on a 'cache_peer' line.
#Default:
# peer_connect_timeout 30 seconds

#  TAG: read_timeout	time-units
#	The read_timeout is applied on server-side connections.  After
#	each successful read(), the timeout will be extended by this
#	amount.  If no data is read again after this amount of time,
#	the request is aborted and logged with ERR_READ_TIMEOUT.  The
#	default is 15 minutes.
#Default:
# read_timeout 15 minutes

#  TAG: request_timeout
#	How long to wait for complete HTTP request headers after initial
#	connection establishment.
#Default:
# request_timeout 5 minutes

#  TAG: persistent_request_timeout
#	How long to wait for the next HTTP request on a persistent
#	connection after the previous request completes.
#Default:
# persistent_request_timeout 2 minutes

#  TAG: client_lifetime	time-units
#	The maximum amount of time a client (browser) is allowed to
#	remain connected to the cache process.  This protects the Cache
#	from having a lot of sockets (and hence file descriptors) tied up
#	in a CLOSE_WAIT state from remote clients that go away without
#	properly shutting down (either because of a network failure or
#	because of a poor client implementation).  The default is one
#	day, 1440 minutes.
#
#	NOTE:  The default value is intended to be much larger than any
#	client would ever need to be connected to your cache.  You
#	should probably change client_lifetime only as a last resort.
#	If you seem to have many client connections tying up
#	filedescriptors, we recommend first tuning the read_timeout,
#	request_timeout, persistent_request_timeout and quick_abort values.
#Default:
# client_lifetime 1 day

#  TAG: half_closed_clients
#	Some clients may shutdown the sending side of their TCP
#	connections, while leaving their receiving sides open.	Sometimes,
#	Squid can not tell the difference between a half-closed and a
#	fully-closed TCP connection.
#
#	By default, Squid will immediately close client connections when
#	read(2) returns "no more data to read."
#
#	Change this option to 'on' and Squid will keep open connections
#	until a read(2) or write(2) on the socket returns an error.
#	This may show some benefits for reverse proxies. But if not
#	it is recommended to leave OFF.
#Default:
# half_closed_clients off

#  TAG: pconn_timeout
#	Timeout for idle persistent connections to servers and other
#	proxies.
#Default:
# pconn_timeout 1 minute

#  TAG: ident_timeout
#	Maximum time to wait for IDENT lookups to complete.
#
#	If this is too high, and you enabled IDENT lookups from untrusted
#	users, you might be susceptible to denial-of-service by having
#	many ident requests going at once.
#Default:
# ident_timeout 10 seconds

#  TAG: shutdown_lifetime	time-units
#	When SIGTERM or SIGHUP is received, the cache is put into
#	"shutdown pending" mode until all active sockets are closed.
#	This value is the lifetime to set for all open descriptors
#	during shutdown mode.  Any active clients after this many
#	seconds will receive a 'timeout' message.
#Default:
# shutdown_lifetime 30 seconds

# ADMINISTRATIVE PARAMETERS
# -----------------------------------------------------------------------------

#  TAG: cache_mgr
#	Email-address of local cache manager who will receive
#	mail if the cache dies.  The default is "webmaster."
#Default:
# cache_mgr webmaster

#  TAG: mail_from
#	From: email-address for mail sent when the cache dies.
#	The default is to use 'appname@unique_hostname'.
#	Default appname value is "squid", can be changed into
#	src/globals.h before building squid.
#Default:
# none

#  TAG: mail_program
#	Email program used to send mail if the cache dies.
#	The default is "mail". The specified program must comply
#	with the standard Unix mail syntax:
#	  mail-program recipient < mailfile
#
#	Optional command line options can be specified.
#Default:
# mail_program mail

#  TAG: cache_effective_user
#	If you start Squid as root, it will change its effective/real
#	UID/GID to the user specified below.  The default is to change
#	to UID of nobody.
#	see also; cache_effective_group
#Default:
cache_effective_user nobody

#  TAG: cache_effective_group
#	Squid sets the GID to the effective user's default group ID
#	(taken from the password file) and supplementary group list
#	from the groups membership.
#
#	If you want Squid to run with a specific GID regardless of
#	the group memberships of the effective user then set this
#	to the group (or GID) you want Squid to run as. When set
#	all other group privileges of the effective user are ignored
#	and only this GID is effective. If Squid is not started as
#	root the user starting Squid MUST be member of the specified
#	group.
#
#	This option is not recommended by the Squid Team.
#	Our preference is for administrators to configure a secure
#	user account for squid with UID/GID matching system policies.
#Default:
cache_effective_group nobody

#  TAG: httpd_suppress_version_string	on|off
#	Suppress Squid version string info in HTTP headers and HTML error pages.
#Default:
# httpd_suppress_version_string off

#  TAG: visible_hostname
#	If you want to present a special hostname in error messages, etc,
#	define this.  Otherwise, the return value of gethostname()
#	will be used. If you have multiple caches in a cluster and
#	get errors about IP-forwarding you must set them to have individual
#	names with this setting.
#Default:
# none

#  TAG: unique_hostname
#	If you want to have multiple machines with the same
#	'visible_hostname' you must give each machine a different
#	'unique_hostname' so forwarding loops can be detected.
#Default:
# none

#  TAG: hostname_aliases
#	A list of other DNS names your cache has.
#Default:
# none

#  TAG: umask
#	Minimum umask which should be enforced while the proxy
#	is running, in addition to the umask set at startup.
#
#	For a traditional octal representation of umasks, start
#        your value with 0.
#Default:
# umask 027

# OPTIONS FOR THE CACHE REGISTRATION SERVICE
# -----------------------------------------------------------------------------
#
#	This section contains parameters for the (optional) cache
#	announcement service.  This service is provided to help
#	cache administrators locate one another in order to join or
#	create cache hierarchies.
#
#	An 'announcement' message is sent (via UDP) to the registration
#	service by Squid.  By default, the announcement message is NOT
#	SENT unless you enable it with 'announce_period' below.
#
#	The announcement message includes your hostname, plus the
#	following information from this configuration file:
#
#		http_port
#		icp_port
#		cache_mgr
#
#	All current information is processed regularly and made
#	available on the Web at http://www.ircache.net/Cache/Tracker/.

#  TAG: announce_period
#	This is how frequently to send cache announcements.  The
#	default is `0' which disables sending the announcement
#	messages.
#
#	To enable announcing your cache, just set an announce period.
#
#	Example:
#		announce_period 1 day
#Default:
# announce_period 0

#  TAG: announce_host
#Default:
# announce_host tracker.ircache.net

#  TAG: announce_file
#Default:
# none

#  TAG: announce_port
#	announce_host and announce_port set the hostname and port
#	number where the registration message will be sent.
#
#	Hostname will default to 'tracker.ircache.net' and port will
#	default default to 3131.  If the 'filename' argument is given,
#	the contents of that file will be included in the announce
#	message.
#Default:
# announce_port 3131

# HTTPD-ACCELERATOR OPTIONS
# -----------------------------------------------------------------------------

#  TAG: httpd_accel_surrogate_id
# Note: This option is only available if Squid is rebuilt with the
#       --enable-esi option
#
#	Surrogates (http://www.esi.org/architecture_spec_1.0.html)
#	need an identification token to allow control targeting. Because
#	a farm of surrogates may all perform the same tasks, they may share
#	an identification token.
#Default:
# httpd_accel_surrogate_id unset-id

#  TAG: http_accel_surrogate_remote	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-esi option
#
#	Remote surrogates (such as those in a CDN) honour Surrogate-Control: no-store-remote.
#	Set this to on to have squid behave as a remote surrogate.
#Default:
# http_accel_surrogate_remote off

#  TAG: esi_parser	libxml2|expat|custom
# Note: This option is only available if Squid is rebuilt with the
#       --enable-esi option
#
#	ESI markup is not strictly XML compatible. The custom ESI parser
#	will give higher performance, but cannot handle non ASCII character
#	encodings.
#Default:
# esi_parser custom

# DELAY POOL PARAMETERS
# -----------------------------------------------------------------------------

#  TAG: delay_pools
# Note: This option is only available if Squid is rebuilt with the
#       --enable-delay-pools option
#
#	This represents the number of delay pools to be used.  For example,
#	if you have one class 2 delay pool and one class 3 delays pool, you
#	have a total of 2 delay pools.
#Default:
# delay_pools 0

#  TAG: delay_class
# Note: This option is only available if Squid is rebuilt with the
#       --enable-delay-pools option
#
#	This defines the class of each delay pool.  There must be exactly one
#	delay_class line for each delay pool.  For example, to define two
#	delay pools, one of class 2 and one of class 3, the settings above
#	and here would be:
#
#	Example:
#	    delay_pools 4      # 4 delay pools
#	    delay_class 1 2    # pool 1 is a class 2 pool
#	    delay_class 2 3    # pool 2 is a class 3 pool
#	    delay_class 3 4    # pool 3 is a class 4 pool
#	    delay_class 4 5    # pool 4 is a class 5 pool
#
#	The delay pool classes are:
#
#		class 1		Everything is limited by a single aggregate
#				bucket.
#
#		class 2 	Everything is limited by a single aggregate
#				bucket as well as an "individual" bucket chosen
#				from bits 25 through 32 of the IPv4 address.
#
#		class 3		Everything is limited by a single aggregate
#				bucket as well as a "network" bucket chosen
#				from bits 17 through 24 of the IP address and a
#				"individual" bucket chosen from bits 17 through
#				32 of the IPv4 address.
#
#		class 4		Everything in a class 3 delay pool, with an
#				additional limit on a per user basis. This
#				only takes effect if the username is established
#				in advance - by forcing authentication in your
#				http_access rules.
#
#		class 5		Requests are grouped according their tag (see
#				external_acl's tag= reply).
#
#
#	Each pool also requires a delay_parameters directive to configure the pool size
#	and speed limits used whenever the pool is applied to a request. Along with
#	a set of delay_access directives to determine when it is used.
#
#	NOTE: If an IP address is a.b.c.d
#		-> bits 25 through 32 are "d"
#		-> bits 17 through 24 are "c"
#		-> bits 17 through 32 are "c * 256 + d"
#
#	NOTE-2: Due to the use of bitmasks in class 2,3,4 pools they only apply to
#		IPv4 traffic. Class 1 and 5 pools may be used with IPv6 traffic.
#Default:
# none

#  TAG: delay_access
# Note: This option is only available if Squid is rebuilt with the
#       --enable-delay-pools option
#
#	This is used to determine which delay pool a request falls into.
#
#	delay_access is sorted per pool and the matching starts with pool 1,
#	then pool 2, ..., and finally pool N. The first delay pool where the
#	request is allowed is selected for the request. If it does not allow
#	the request to any pool then the request is not delayed (default).
#
#	For example, if you want some_big_clients in delay
#	pool 1 and lotsa_little_clients in delay pool 2:
#
#Example:
# delay_access 1 allow some_big_clients
# delay_access 1 deny all
# delay_access 2 allow lotsa_little_clients
# delay_access 2 deny all
# delay_access 3 allow authenticated_clients
#Default:
# none

#  TAG: delay_parameters
# Note: This option is only available if Squid is rebuilt with the
#       --enable-delay-pools option
#
#	This defines the parameters for a delay pool.  Each delay pool has
#	a number of "buckets" associated with it, as explained in the
#	description of delay_class.
#
#	For a class 1 delay pool, the syntax is:
#		delay_pools pool 1
#		delay_parameters pool aggregate
#
#	For a class 2 delay pool:
#		delay_pools pool 2
#		delay_parameters pool aggregate individual
#
#	For a class 3 delay pool:
#		delay_pools pool 3
#		delay_parameters pool aggregate network individual
#
#	For a class 4 delay pool:
#		delay_pools pool 4
#		delay_parameters pool aggregate network individual user
#
#	For a class 5 delay pool:
#		delay_pools pool 5
#		delay_parameters pool tagrate
#
#	The option variables are:
#
#		pool		a pool number - ie, a number between 1 and the
#				number specified in delay_pools as used in
#				delay_class lines.
#
#		aggregate	the speed limit parameters for the aggregate bucket
#				(class 1, 2, 3).
#
#		individual	the speed limit parameters for the individual
#				buckets (class 2, 3).
#
#		network		the speed limit parameters for the network buckets
#				(class 3).
#
#		user		the speed limit parameters for the user buckets
#				(class 4).
#
#		tagrate		the speed limit parameters for the tag buckets
#				(class 5).
#
#	A pair of delay parameters is written restore/maximum, where restore is
#	the number of bytes (not bits - modem and network speeds are usually
#	quoted in bits) per second placed into the bucket, and maximum is the
#	maximum number of bytes which can be in the bucket at any time.
#
#	There must be one delay_parameters line for each delay pool.
#
#
#	For example, if delay pool number 1 is a class 2 delay pool as in the
#	above example, and is being used to strictly limit each host to 64Kbit/sec
#	(plus overheads), with no overall limit, the line is:
#
#		delay_parameters 1 -1/-1 8000/8000
#
#	Note that 8 x 8000 KByte/sec -> 64Kbit/sec.
#
#	Note that the figure -1 is used to represent "unlimited".
#
#
#	And, if delay pool number 2 is a class 3 delay pool as in the above
#	example, and you want to limit it to a total of 256Kbit/sec (strict limit)
#	with each 8-bit network permitted 64Kbit/sec (strict limit) and each
#	individual host permitted 4800bit/sec with a bucket maximum size of 64Kbits
#	to permit a decent web page to be downloaded at a decent speed
#	(if the network is not being limited due to overuse) but slow down
#	large downloads more significantly:
#
#		delay_parameters 2 32000/32000 8000/8000 600/8000
#
#	Note that 8 x 32000 KByte/sec -> 256Kbit/sec.
#		  8 x  8000 KByte/sec ->  64Kbit/sec.
#		  8 x   600 Byte/sec  -> 4800bit/sec.
#
#
#	Finally, for a class 4 delay pool as in the example - each user will
#	be limited to 128Kbits/sec no matter how many workstations they are logged into.:
#
#		delay_parameters 4 32000/32000 8000/8000 600/64000 16000/16000
#Default:
# none

#  TAG: delay_initial_bucket_level	(percent, 0-100)
# Note: This option is only available if Squid is rebuilt with the
#       --enable-delay-pools option
#
#	The initial bucket percentage is used to determine how much is put
#	in each bucket when squid starts, is reconfigured, or first notices
#	a host accessing it (in class 2 and class 3, individual hosts and
#	networks only have buckets associated with them once they have been
#	"seen" by squid).
#Default:
# delay_initial_bucket_level 50

# WCCPv1 AND WCCPv2 CONFIGURATION OPTIONS
# -----------------------------------------------------------------------------

#  TAG: wccp_router
#	Use this option to define your WCCP ``home'' router for
#	Squid.
#
#	wccp_router supports a single WCCP(v1) router
#
#	wccp2_router supports multiple WCCPv2 routers
#
#	only one of the two may be used at the same time and defines
#	which version of WCCP to use.
#Default:
# wccp_router any_addr

#  TAG: wccp2_router
#	Use this option to define your WCCP ``home'' router for
#	Squid.
#
#	wccp_router supports a single WCCP(v1) router
#
#	wccp2_router supports multiple WCCPv2 routers
#
#	only one of the two may be used at the same time and defines
#	which version of WCCP to use.
#Default:
# none

#  TAG: wccp_version
#	This directive is only relevant if you need to set up WCCP(v1)
#	to some very old and end-of-life Cisco routers. In all other
#	setups it must be left unset or at the default setting.
#	It defines an internal version in the WCCP(v1) protocol,
#	with version 4 being the officially documented protocol.
#
#	According to some users, Cisco IOS 11.2 and earlier only
#	support WCCP version 3.  If you're using that or an earlier
#	version of IOS, you may need to change this value to 3, otherwise
#	do not specify this parameter.
#Default:
# wccp_version 4

#  TAG: wccp2_rebuild_wait
#	If this is enabled Squid will wait for the cache dir rebuild to finish
#	before sending the first wccp2 HereIAm packet
#Default:
# wccp2_rebuild_wait on

#  TAG: wccp2_forwarding_method
#	WCCP2 allows the setting of forwarding methods between the
#	router/switch and the cache.  Valid values are as follows:
#
#	gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
#	l2  - L2 redirect (forward the packet using Layer 2/MAC rewriting)
#
#	Currently (as of IOS 12.4) cisco routers only support GRE.
#	Cisco switches only support the L2 redirect assignment method.
#Default:
# wccp2_forwarding_method gre

#  TAG: wccp2_return_method
#	WCCP2 allows the setting of return methods between the
#	router/switch and the cache for packets that the cache
#	decides not to handle.  Valid values are as follows:
#
#	gre - GRE encapsulation (forward the packet in a GRE/WCCP tunnel)
#	l2  - L2 redirect (forward the packet using Layer 2/MAC rewriting)
#
#	Currently (as of IOS 12.4) cisco routers only support GRE.
#	Cisco switches only support the L2 redirect assignment.
#
#	If the "ip wccp redirect exclude in" command has been
#	enabled on the cache interface, then it is still safe for
#	the proxy server to use a l2 redirect method even if this
#	option is set to GRE.
#Default:
# wccp2_return_method gre

#  TAG: wccp2_assignment_method
#	WCCP2 allows the setting of methods to assign the WCCP hash
#	Valid values are as follows:
#
#	hash - Hash assignment
#	mask  - Mask assignment
#
#	As a general rule, cisco routers support the hash assignment method
#	and cisco switches support the mask assignment method.
#Default:
# wccp2_assignment_method hash

#  TAG: wccp2_service
#	WCCP2 allows for multiple traffic services. There are two
#	types: "standard" and "dynamic". The standard type defines
#	one service id - http (id 0). The dynamic service ids can be from
#	51 to 255 inclusive.  In order to use a dynamic service id
#	one must define the type of traffic to be redirected; this is done
#	using the wccp2_service_info option.
#
#	The "standard" type does not require a wccp2_service_info option,
#	just specifying the service id will suffice.
#
#	MD5 service authentication can be enabled by adding
#	"password=<password>" to the end of this service declaration.
#
#	Examples:
#
#	wccp2_service standard 0	# for the 'web-cache' standard service
#	wccp2_service dynamic 80	# a dynamic service type which will be
#					# fleshed out with subsequent options.
#	wccp2_service standard 0 password=foo
#Default:
# wccp2_service standard 0

#  TAG: wccp2_service_info
#	Dynamic WCCPv2 services require further information to define the
#	traffic you wish to have diverted.
#
#	The format is:
#
#	wccp2_service_info <id> protocol=<protocol> flags=<flag>,<flag>..
#	    priority=<priority> ports=<port>,<port>..
#
#	The relevant WCCPv2 flags:
#	+ src_ip_hash, dst_ip_hash
#	+ source_port_hash, dst_port_hash
#	+ src_ip_alt_hash, dst_ip_alt_hash
#	+ src_port_alt_hash, dst_port_alt_hash
#	+ ports_source
#
#	The port list can be one to eight entries.
#
#	Example:
#
#	wccp2_service_info 80 protocol=tcp flags=src_ip_hash,ports_source
#	    priority=240 ports=80
#
#	Note: the service id must have been defined by a previous
#	'wccp2_service dynamic <id>' entry.
#Default:
# none

#  TAG: wccp2_weight
#	Each cache server gets assigned a set of the destination
#	hash proportional to their weight.
#Default:
# wccp2_weight 10000

#  TAG: wccp_address
#Default:
# wccp_address 0.0.0.0

#  TAG: wccp2_address
#	Use this option if you require WCCP to use a specific
#	interface address.
#
#	The default behavior is to not bind to any specific address.
#Default:
# wccp2_address 0.0.0.0

# PERSISTENT CONNECTION HANDLING
# -----------------------------------------------------------------------------
#
# Also see "pconn_timeout" in the TIMEOUTS section

#  TAG: client_persistent_connections
#Default:
# client_persistent_connections on

#  TAG: server_persistent_connections
#	Persistent connection support for clients and servers.  By
#	default, Squid uses persistent connections (when allowed)
#	with its clients and servers.  You can use these options to
#	disable persistent connections with clients and/or servers.
#Default:
# server_persistent_connections on

#  TAG: persistent_connection_after_error
#	With this directive the use of persistent connections after
#	HTTP errors can be disabled. Useful if you have clients
#	who fail to handle errors on persistent connections proper.
#Default:
# persistent_connection_after_error on

#  TAG: detect_broken_pconn
#	Some servers have been found to incorrectly signal the use
#	of HTTP/1.0 persistent connections even on replies not
#	compatible, causing significant delays. This server problem
#	has mostly been seen on redirects.
#
#	By enabling this directive Squid attempts to detect such
#	broken replies and automatically assume the reply is finished
#	after 10 seconds timeout.
#Default:
# detect_broken_pconn off

# CACHE DIGEST OPTIONS
# -----------------------------------------------------------------------------

#  TAG: digest_generation
# Note: This option is only available if Squid is rebuilt with the
#       --enable-cache-digests option
#
#	This controls whether the server will generate a Cache Digest
#	of its contents.  By default, Cache Digest generation is
#	enabled if Squid is compiled with --enable-cache-digests defined.
#Default:
# digest_generation on

#  TAG: digest_bits_per_entry
# Note: This option is only available if Squid is rebuilt with the
#       --enable-cache-digests option
#
#	This is the number of bits of the server's Cache Digest which
#	will be associated with the Digest entry for a given HTTP
#	Method and URL (public key) combination.  The default is 5.
#Default:
# digest_bits_per_entry 5

#  TAG: digest_rebuild_period	(seconds)
# Note: This option is only available if Squid is rebuilt with the
#       --enable-cache-digests option
#
#	This is the wait time between Cache Digest rebuilds.
#Default:
# digest_rebuild_period 1 hour

#  TAG: digest_rewrite_period	(seconds)
# Note: This option is only available if Squid is rebuilt with the
#       --enable-cache-digests option
#
#	This is the wait time between Cache Digest writes to
#	disk.
#Default:
# digest_rewrite_period 1 hour

#  TAG: digest_swapout_chunk_size	(bytes)
# Note: This option is only available if Squid is rebuilt with the
#       --enable-cache-digests option
#
#	This is the number of bytes of the Cache Digest to write to
#	disk at a time.  It defaults to 4096 bytes (4KB), the Squid
#	default swap page.
#Default:
# digest_swapout_chunk_size 4096 bytes

#  TAG: digest_rebuild_chunk_percentage	(percent, 0-100)
# Note: This option is only available if Squid is rebuilt with the
#       --enable-cache-digests option
#
#	This is the percentage of the Cache Digest to be scanned at a
#	time.  By default it is set to 10% of the Cache Digest.
#Default:
# digest_rebuild_chunk_percentage 10

# SNMP OPTIONS
# -----------------------------------------------------------------------------

#  TAG: snmp_port
#	The port number where Squid listens for SNMP requests. To enable
#	SNMP support set this to a suitable port number. Port number
#	3401 is often used for the Squid SNMP agent. By default it's
#	set to "0" (disabled)
#
#	Example:
#		snmp_port 3401
#Default:
# snmp_port 0

#  TAG: snmp_access
#	Allowing or denying access to the SNMP port.
#
#	All access to the agent is denied by default.
#	usage:
#
#	snmp_access allow|deny [!]aclname ...
#
#	This clause only supports fast acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Example:
# snmp_access allow snmppublic localhost
# snmp_access deny all
#Default:
# snmp_access deny all

#  TAG: snmp_incoming_address
#Default:
# snmp_incoming_address any_addr

#  TAG: snmp_outgoing_address
#	Just like 'udp_incoming_address', but for the SNMP port.
#
#	snmp_incoming_address	is used for the SNMP socket receiving
#				messages from SNMP agents.
#	snmp_outgoing_address	is used for SNMP packets returned to SNMP
#				agents.
#
#	The default snmp_incoming_address is to listen on all
#	available network interfaces.
#
#	If snmp_outgoing_address is not set it will use the same socket
#	as snmp_incoming_address. Only change this if you want to have
#	SNMP replies sent using another address than where this Squid
#	listens for SNMP queries.
#
#	NOTE, snmp_incoming_address and snmp_outgoing_address can not have
#	the same value since they both use port 3401.
#Default:
# snmp_outgoing_address no_addr

# ICP OPTIONS
# -----------------------------------------------------------------------------

#  TAG: icp_port
#	The port number where Squid sends and receives ICP queries to
#	and from neighbor caches.  The standard UDP port for ICP is 3130.
#	Default is disabled (0).
#
#	Example:
#		icp_port 3130
#Default:
# icp_port 0

#  TAG: htcp_port
#	The port number where Squid sends and receives HTCP queries to
#	and from neighbor caches.  To turn it on you want to set it to
#	4827. By default it is set to "0" (disabled).
#
#	Example:
#		htcp_port 4827
#Default:
# htcp_port 0

#  TAG: log_icp_queries	on|off
#	If set, ICP queries are logged to access.log. You may wish
#	do disable this if your ICP load is VERY high to speed things
#	up or to simplify log analysis.
#Default:
# log_icp_queries on

#  TAG: udp_incoming_address
#	udp_incoming_address	is used for UDP packets received from other
#				caches.
#
#	The default behavior is to not bind to any specific address.
#
#	Only change this if you want to have all UDP queries received on
#	a specific interface/address.
#
#	NOTE: udp_incoming_address is used by the ICP, HTCP, and DNS
#	modules. Altering it will affect all of them in the same manner.
#
#	see also; udp_outgoing_address
#
#	NOTE, udp_incoming_address and udp_outgoing_address can not
#	have the same value since they both use the same port.
#Default:
# udp_incoming_address any_addr

#  TAG: udp_outgoing_address
#	udp_outgoing_address	is used for UDP packets sent out to other
#				caches.
#
#	The default behavior is to not bind to any specific address.
#
#	Instead it will use the same socket as udp_incoming_address.
#	Only change this if you want to have UDP queries sent using another
#	address than where this Squid listens for UDP queries from other
#	caches.
#
#	NOTE: udp_outgoing_address is used by the ICP, HTCP, and DNS
#	modules. Altering it will affect all of them in the same manner.
#
#	see also; udp_incoming_address
#
#	NOTE, udp_incoming_address and udp_outgoing_address can not
#	have the same value since they both use the same port.
#Default:
# udp_outgoing_address no_addr

#  TAG: icp_hit_stale	on|off
#	If you want to return ICP_HIT for stale cache objects, set this
#	option to 'on'.  If you have sibling relationships with caches
#	in other administrative domains, this should be 'off'.  If you only
#	have sibling relationships with caches under your control,
#	it is probably okay to set this to 'on'.
#	If set to 'on', your siblings should use the option "allow-miss"
#	on their cache_peer lines for connecting to you.
#Default:
# icp_hit_stale off

#  TAG: minimum_direct_hops
#	If using the ICMP pinging stuff, do direct fetches for sites
#	which are no more than this many hops away.
#Default:
# minimum_direct_hops 4

#  TAG: minimum_direct_rtt
#	If using the ICMP pinging stuff, do direct fetches for sites
#	which are no more than this many rtt milliseconds away.
#Default:
# minimum_direct_rtt 400

#  TAG: netdb_low
#Default:
# netdb_low 900

#  TAG: netdb_high
#	The low and high water marks for the ICMP measurement
#	database.  These are counts, not percents.  The defaults are
#	900 and 1000.  When the high water mark is reached, database
#	entries will be deleted until the low mark is reached.
#Default:
# netdb_high 1000

#  TAG: netdb_ping_period
#	The minimum period for measuring a site.  There will be at
#	least this much delay between successive pings to the same
#	network.  The default is five minutes.
#Default:
# netdb_ping_period 5 minutes

#  TAG: query_icmp	on|off
#	If you want to ask your peers to include ICMP data in their ICP
#	replies, enable this option.
#
#	If your peer has configured Squid (during compilation) with
#	'--enable-icmp' that peer will send ICMP pings to origin server
#	sites of the URLs it receives.  If you enable this option the
#	ICP replies from that peer will include the ICMP data (if available).
#	Then, when choosing a parent cache, Squid will choose the parent with
#	the minimal RTT to the origin server.  When this happens, the
#	hierarchy field of the access.log will be
#	"CLOSEST_PARENT_MISS".  This option is off by default.
#Default:
# query_icmp off

#  TAG: test_reachability	on|off
#	When this is 'on', ICP MISS replies will be ICP_MISS_NOFETCH
#	instead of ICP_MISS if the target host is NOT in the ICMP
#	database, or has a zero RTT.
#Default:
# test_reachability off

#  TAG: icp_query_timeout	(msec)
#	Normally Squid will automatically determine an optimal ICP
#	query timeout value based on the round-trip-time of recent ICP
#	queries.  If you want to override the value determined by
#	Squid, set this 'icp_query_timeout' to a non-zero value.  This
#	value is specified in MILLISECONDS, so, to use a 2-second
#	timeout (the old default), you would write:
#
#		icp_query_timeout 2000
#Default:
# icp_query_timeout 0

#  TAG: maximum_icp_query_timeout	(msec)
#	Normally the ICP query timeout is determined dynamically.  But
#	sometimes it can lead to very large values (say 5 seconds).
#	Use this option to put an upper limit on the dynamic timeout
#	value.  Do NOT use this option to always use a fixed (instead
#	of a dynamic) timeout value. To set a fixed timeout see the
#	'icp_query_timeout' directive.
#Default:
# maximum_icp_query_timeout 2000

#  TAG: minimum_icp_query_timeout	(msec)
#	Normally the ICP query timeout is determined dynamically.  But
#	sometimes it can lead to very small timeouts, even lower than
#	the normal latency variance on your link due to traffic.
#	Use this option to put an lower limit on the dynamic timeout
#	value.  Do NOT use this option to always use a fixed (instead
#	of a dynamic) timeout value. To set a fixed timeout see the
#	'icp_query_timeout' directive.
#Default:
# minimum_icp_query_timeout 5

#  TAG: background_ping_rate	time-units
#	Controls how often the ICP pings are sent to siblings that
#	have background-ping set.
#Default:
# background_ping_rate 10 seconds

# MULTICAST ICP OPTIONS
# -----------------------------------------------------------------------------

#  TAG: mcast_groups
#	This tag specifies a list of multicast groups which your server
#	should join to receive multicasted ICP queries.
#
#	NOTE!  Be very careful what you put here!  Be sure you
#	understand the difference between an ICP _query_ and an ICP
#	_reply_.  This option is to be set only if you want to RECEIVE
#	multicast queries.  Do NOT set this option to SEND multicast
#	ICP (use cache_peer for that).  ICP replies are always sent via
#	unicast, so this option does not affect whether or not you will
#	receive replies from multicast group members.
#
#	You must be very careful to NOT use a multicast address which
#	is already in use by another group of caches.
#
#	If you are unsure about multicast, please read the Multicast
#	chapter in the Squid FAQ (http://www.squid-cache.org/FAQ/).
#
#	Usage: mcast_groups 239.128.16.128 224.0.1.20
#
#	By default, Squid doesn't listen on any multicast groups.
#Default:
# none

#  TAG: mcast_miss_addr
# Note: This option is only available if Squid is rebuilt with the
#       -DMULTICAST_MISS_STREAM define
#
#	If you enable this option, every "cache miss" URL will
#	be sent out on the specified multicast address.
#
#	Do not enable this option unless you are are absolutely
#	certain you understand what you are doing.
#Default:
# mcast_miss_addr no_addr

#  TAG: mcast_miss_ttl
# Note: This option is only available if Squid is rebuilt with the
#       -DMULTICAST_MISS_STREAM define
#
#	This is the time-to-live value for packets multicasted
#	when multicasting off cache miss URLs is enabled.  By
#	default this is set to 'site scope', i.e. 16.
#Default:
# mcast_miss_ttl 16

#  TAG: mcast_miss_port
# Note: This option is only available if Squid is rebuilt with the
#       -DMULTICAST_MISS_STREAM define
#
#	This is the port number to be used in conjunction with
#	'mcast_miss_addr'.
#Default:
# mcast_miss_port 3135

#  TAG: mcast_miss_encode_key
# Note: This option is only available if Squid is rebuilt with the
#       -DMULTICAST_MISS_STREAM define
#
#	The URLs that are sent in the multicast miss stream are
#	encrypted.  This is the encryption key.
#Default:
# mcast_miss_encode_key XXXXXXXXXXXXXXXX

#  TAG: mcast_icp_query_timeout	(msec)
#	For multicast peers, Squid regularly sends out ICP "probes" to
#	count how many other peers are listening on the given multicast
#	address.  This value specifies how long Squid should wait to
#	count all the replies.  The default is 2000 msec, or 2
#	seconds.
#Default:
# mcast_icp_query_timeout 2000

# INTERNAL ICON OPTIONS
# -----------------------------------------------------------------------------

#  TAG: icon_directory
#	Where the icons are stored. These are normally kept in
#	/usr/share/squid/icons
#Default:
# icon_directory /usr/share/squid/icons

#  TAG: global_internal_static
#	This directive controls is Squid should intercept all requests for
#	/squid-internal-static/ no matter which host the URL is requesting
#	(default on setting), or if nothing special should be done for
#	such URLs (off setting). The purpose of this directive is to make
#	icons etc work better in complex cache hierarchies where it may
#	not always be possible for all corners in the cache mesh to reach
#	the server generating a directory listing.
#Default:
# global_internal_static on

#  TAG: short_icon_urls
#	If this is enabled Squid will use short URLs for icons.
#	If disabled it will revert to the old behavior of including
#	it's own name and port in the URL.
#
#	If you run a complex cache hierarchy with a mix of Squid and
#	other proxies you may need to disable this directive.
#Default:
# short_icon_urls on

# ERROR PAGE OPTIONS
# -----------------------------------------------------------------------------

#  TAG: error_directory
#	If you wish to create your own versions of the default
#	error files to customize them to suit your company copy
#	the error/template files to another directory and point
#	this tag at them.
#
#	WARNING: This option will disable multi-language support
#	         on error pages if used.
#
#	The squid developers are interested in making squid available in
#	a wide variety of languages. If you are making translations for a
#	language that Squid does not currently provide please consider
#	contributing your translation back to the project.
#	http://wiki.squid-cache.org/Translations
#
#	The squid developers working on translations are happy to supply drop-in
#	translated error files in exchange for any new language contributions.
#Default:
# none

#  TAG: error_default_language
#	Set the default language which squid will send error pages in
#	if no existing translation matches the clients language
#	preferences.
#
#	If unset (default) generic English will be used.
#
#	The squid developers are interested in making squid available in
#	a wide variety of languages. If you are interested in making
#	translations for any language see the squid wiki for details.
#	http://wiki.squid-cache.org/Translations
#Default:
# none

#  TAG: error_log_languages
#	Log to cache.log what languages users are attempting to
#	auto-negotiate for translations.
#
#	Successful negotiations are not logged. Only failures
#	have meaning to indicate that Squid may need an upgrade
#	of its error page translations.
#Default:
# error_log_languages on

#  TAG: err_page_stylesheet
#	CSS Stylesheet to pattern the display of Squid default error pages.
#
#	For information on CSS see http://www.w3.org/Style/CSS/
#Default:
# err_page_stylesheet /etc/squid/errorpage.css

#  TAG: err_html_text
#	HTML text to include in error messages.  Make this a "mailto"
#	URL to your admin address, or maybe just a link to your
#	organizations Web page.
#
#	To include this in your error messages, you must rewrite
#	the error template files (found in the "errors" directory).
#	Wherever you want the 'err_html_text' line to appear,
#	insert a %L tag in the error template file.
#Default:
# none

#  TAG: email_err_data	on|off
#	If enabled, information about the occurred error will be
#	included in the mailto links of the ERR pages (if %W is set)
#	so that the email body contains the data.
#	Syntax is <A HREF="mailto:%w%W">%w</A>
#Default:
# email_err_data on

#  TAG: deny_info
#	Usage:   deny_info err_page_name acl
#	or       deny_info http://... acl
#	or       deny_info TCP_RESET acl
#
#	This can be used to return a ERR_ page for requests which
#	do not pass the 'http_access' rules.  Squid remembers the last
#	acl it evaluated in http_access, and if a 'deny_info' line exists
#	for that ACL Squid returns a corresponding error page.
#
#	The acl is typically the last acl on the http_access deny line which
#	denied access. The exceptions to this rule are:
#	- When Squid needs to request authentication credentials. It's then
#	  the first authentication related acl encountered
#	- When none of the http_access lines matches. It's then the last
#	  acl processed on the last http_access line.
#
#	NP: If providing your own custom error pages with error_directory
#	    you may also specify them by your custom file name:
#	    Example: deny_info ERR_CUSTOM_ACCESS_DENIED bad_guys
#
#	Alternatively you can specify an error URL. The browsers will
#	get redirected (302 or 307) to the specified URL. %s in the redirection
#	URL will be replaced by the requested URL.
#
#	Alternatively you can tell Squid to reset the TCP connection
#	by specifying TCP_RESET.
#Default:
# none

# OPTIONS INFLUENCING REQUEST FORWARDING 
# -----------------------------------------------------------------------------

#  TAG: nonhierarchical_direct
#	By default, Squid will send any non-hierarchical requests
#	(matching hierarchy_stoplist or not cacheable request type) direct
#	to origin servers.
#
#	If you set this to off, Squid will prefer to send these
#	requests to parents.
#
#	Note that in most configurations, by turning this off you will only
#	add latency to these request without any improvement in global hit
#	ratio.
#
#	If you are inside an firewall see never_direct instead of
#	this directive.
#Default:
# nonhierarchical_direct on

#  TAG: prefer_direct
#	Normally Squid tries to use parents for most requests. If you for some
#	reason like it to first try going direct and only use a parent if
#	going direct fails set this to on.
#
#	By combining nonhierarchical_direct off and prefer_direct on you
#	can set up Squid to use a parent as a backup path if going direct
#	fails.
#
#	Note: If you want Squid to use parents for all requests see
#	the never_direct directive. prefer_direct only modifies how Squid
#	acts on cacheable requests.
#Default:
# prefer_direct off

#  TAG: always_direct
#	Usage: always_direct allow|deny [!]aclname ...
#
#	Here you can use ACL elements to specify requests which should
#	ALWAYS be forwarded by Squid to the origin servers without using
#	any peers.  For example, to always directly forward requests for
#	local servers ignoring any parents or siblings you may have use
#	something like:
#
#		acl local-servers dstdomain my.domain.net
#		always_direct allow local-servers
#
#	To always forward FTP requests directly, use
#
#		acl FTP proto FTP
#		always_direct allow FTP
#
#	NOTE: There is a similar, but opposite option named
#	'never_direct'.  You need to be aware that "always_direct deny
#	foo" is NOT the same thing as "never_direct allow foo".  You
#	may need to use a deny rule to exclude a more-specific case of
#	some other rule.  Example:
#
#		acl local-external dstdomain external.foo.net
#		acl local-servers dstdomain  .foo.net
#		always_direct deny local-external
#		always_direct allow local-servers
#
#	NOTE: If your goal is to make the client forward the request
#	directly to the origin server bypassing Squid then this needs
#	to be done in the client configuration. Squid configuration
#	can only tell Squid how Squid should fetch the object.
#
#	NOTE: This directive is not related to caching. The replies
#	is cached as usual even if you use always_direct. To not cache
#	the replies see the 'cache' directive.
#
#	This clause supports both fast and slow acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# none

#  TAG: never_direct
#	Usage: never_direct allow|deny [!]aclname ...
#
#	never_direct is the opposite of always_direct.  Please read
#	the description for always_direct if you have not already.
#
#	With 'never_direct' you can use ACL elements to specify
#	requests which should NEVER be forwarded directly to origin
#	servers.  For example, to force the use of a proxy for all
#	requests, except those in your local domain use something like:
#
#		acl local-servers dstdomain .foo.net
#		never_direct deny local-servers
#		never_direct allow all
#
#	or if Squid is inside a firewall and there are local intranet
#	servers inside the firewall use something like:
#
#		acl local-intranet dstdomain .foo.net
#		acl local-external dstdomain external.foo.net
#		always_direct deny local-external
#		always_direct allow local-intranet
#		never_direct allow all
#
#	This clause supports both fast and slow acl types.
#	See http://wiki.squid-cache.org/SquidFaq/SquidAcl for details.
#Default:
# none

# ADVANCED NETWORKING OPTIONS
# -----------------------------------------------------------------------------

#  TAG: incoming_icp_average
#Default:
# incoming_icp_average 6

#  TAG: incoming_http_average
#Default:
# incoming_http_average 4

#  TAG: incoming_dns_average
#Default:
# incoming_dns_average 4

#  TAG: min_icp_poll_cnt
#Default:
# min_icp_poll_cnt 8

#  TAG: min_dns_poll_cnt
#Default:
# min_dns_poll_cnt 8

#  TAG: min_http_poll_cnt
#	Heavy voodoo here.  I can't even believe you are reading this.
#	Are you crazy?  Don't even think about adjusting these unless
#	you understand the algorithms in comm_select.c first!
#Default:
# min_http_poll_cnt 8

#  TAG: accept_filter
#	FreeBSD:
#
#	The name of an accept(2) filter to install on Squid's
#	listen socket(s).  This feature is perhaps specific to
#	FreeBSD and requires support in the kernel.
#
#	The 'httpready' filter delays delivering new connections
#	to Squid until a full HTTP request has been received.
#	See the accf_http(9) man page for details.
#
#	The 'dataready' filter delays delivering new connections
#	to Squid until there is some data to process.
#	See the accf_dataready(9) man page for details.
#
#	Linux:
#	
#	The 'data' filter delays delivering of new connections
#	to Squid until there is some data to process by TCP_ACCEPT_DEFER.
#	You may optionally specify a number of seconds to wait by
#	'data=N' where N is the number of seconds. Defaults to 30
#	if not specified.  See the tcp(7) man page for details.
#EXAMPLE:
## FreeBSD
#accept_filter httpready
## Linux
#accept_filter data
#Default:
# none

#  TAG: client_ip_max_connections
#	Set an absolute limit on the number of connections a single
#	client IP can use. Any more than this and Squid will begin to drop
#	new connections from the client until it closes some links.
#
#	Note that this is a global limit. It affects all HTTP, HTCP, Gopher and FTP
#	connections from the client. For finer control use the ACL access controls.
#
#	Requires client_db to be enabled (the default).
#
#	WARNING: This may noticably slow down traffic received via external proxies
#	or NAT devices and cause them to rebound error messages back to their clients.
#Default:
# client_ip_max_connections -1

#  TAG: tcp_recv_bufsize	(bytes)
#	Size of receive buffer to set for TCP sockets.  Probably just
#	as easy to change your kernel's default.  Set to zero to use
#	the default buffer size.
#Default:
# tcp_recv_bufsize 0 bytes

# ICAP OPTIONS
# -----------------------------------------------------------------------------

#  TAG: icap_enable	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	If you want to enable the ICAP module support, set this to on.
#Default:
# icap_enable off

#  TAG: icap_connect_timeout
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	This parameter specifies how long to wait for the TCP connect to
#	the requested ICAP server to complete before giving up and either
#	terminating the HTTP transaction or bypassing the failure.
#
#	The default for optional services is peer_connect_timeout.
#	The default for essential services is connect_timeout.
#	If this option is explicitly set, its value applies to all services.
#Default:
# none

#  TAG: icap_io_timeout	time-units
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	This parameter specifies how long to wait for an I/O activity on
#	an established, active ICAP connection before giving up and
#	either terminating the HTTP transaction or bypassing the
#	failure.
#
#	The default is read_timeout.
#Default:
# none

#  TAG: icap_service_failure_limit
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	The limit specifies the number of failures that Squid tolerates
#	when establishing a new TCP connection with an ICAP service. If
#	the number of failures exceeds the limit, the ICAP service is
#	not used for new ICAP requests until it is time to refresh its
#	OPTIONS. The per-service failure counter is reset to zero each
#	time Squid fetches new service OPTIONS.
#
#	A negative value disables the limit. Without the limit, an ICAP
#	service will not be considered down due to connectivity failures
#	between ICAP OPTIONS requests.
#Default:
# icap_service_failure_limit 10

#  TAG: icap_service_revival_delay
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	The delay specifies the number of seconds to wait after an ICAP
#	OPTIONS request failure before requesting the options again. The
#	failed ICAP service is considered "down" until fresh OPTIONS are
#	fetched.
#
#	The actual delay cannot be smaller than the hardcoded minimum
#	delay of 30 seconds.
#Default:
# icap_service_revival_delay 180

#  TAG: icap_preview_enable	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	The ICAP Preview feature allows the ICAP server to handle the
#	HTTP message by looking only at the beginning of the message body
#	or even without receiving the body at all. In some environments, 
#	previews greatly speedup ICAP processing.
#
#	During an ICAP OPTIONS transaction, the server may tell	Squid what
#	HTTP messages should be previewed and how big the preview should be.
#	Squid will not use Preview if the server did not request one.
#
#	To disable ICAP Preview for all ICAP services, regardless of
#	individual ICAP server OPTIONS responses, set this option to "off".
#Example:
#icap_preview_enable off
#Default:
# icap_preview_enable on

#  TAG: icap_preview_size
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	The default size of preview data to be sent to the ICAP server.
#	-1 means no preview. This value might be overwritten on a per server
#	basis by OPTIONS requests.
#Default:
# icap_preview_size -1

#  TAG: icap_default_options_ttl
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	The default TTL value for ICAP OPTIONS responses that don't have
#	an Options-TTL header.
#Default:
# icap_default_options_ttl 60

#  TAG: icap_persistent_connections	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	Whether or not Squid should use persistent connections to
#	an ICAP server.
#Default:
# icap_persistent_connections on

#  TAG: icap_send_client_ip	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	If enabled, Squid shares HTTP client IP information with adaptation
#	services. For ICAP, Squid adds the X-Client-IP header to ICAP requests.
#	For eCAP, Squid sets the libecap::metaClientIp transaction option.
#
#	See also: adaptation_uses_indirect_client
#Default:
# icap_send_client_ip off

#  TAG: icap_send_client_username	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	This sends authenticated HTTP client username (if available) to
#	the ICAP service. The username value is encoded based on the
#	icap_client_username_encode option and is sent using the header
#	specified by the icap_client_username_header option.
#Default:
# icap_send_client_username off

#  TAG: icap_client_username_header
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	ICAP request header name to use for send_client_username.
#Default:
# icap_client_username_header X-Client-Username

#  TAG: icap_client_username_encode	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	Whether to base64 encode the authenticated client username.
#Default:
# icap_client_username_encode off

#  TAG: icap_service
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	Defines a single ICAP service using the following format:
#
#	icap_service service_name vectoring_point [options] service_url
#
#	service_name: ID
#		an opaque identifier which must be unique in squid.conf
#
#	vectoring_point: reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache
#		This specifies at which point of transaction processing the
#		ICAP service should be activated. *_postcache vectoring points
#		are not yet supported.
#
#	service_url: icap://servername:port/servicepath
#		ICAP server and service location.
#
#	ICAP does not allow a single service to handle both REQMOD and RESPMOD
#	transactions. Squid does not enforce that requirement. You can specify
#	services with the same service_url and different vectoring_points. You
#	can even specify multiple identical services as long as their
#	service_names differ.
#
#
#	Service options are separated by white space. ICAP services support
#	the following name=value options:
#
#	bypass=on|off|1|0
#		If set to 'on' or '1', the ICAP service is treated as
#		optional. If the service cannot be reached or malfunctions,
#		Squid will try to ignore any errors and process the message as
#		if the service was not enabled. No all ICAP errors can be
#		bypassed.  If set to 0, the ICAP service is treated as
#		essential and all ICAP errors will result in an error page
#		returned to the HTTP client.
#
#		Bypass is off by default: services are treated as essential.
#
#	routing=on|off|1|0
#		If set to 'on' or '1', the ICAP service is allowed to
#		dynamically change the current message adaptation plan by
#		returning a chain of services to be used next. The services
#		are specified using the X-Next-Services ICAP response header
#		value, formatted as a comma-separated list of service names.
#		Each named service should be configured in squid.conf and
#		should have the same method and vectoring point as the current
#		ICAP transaction.  Services violating these rules are ignored.
#		An empty X-Next-Services value results in an empty plan which
#		ends the current adaptation. 
#
#		Routing is not allowed by default: the ICAP X-Next-Services
#		response header is ignored.
#
#	ipv6=on|off
#		Only has effect on split-stack systems. The default on those systems
#		is to use IPv4-only connections. When set to 'on' this option will
#		make Squid use IPv6-only connections to contact this ICAP service.
#
#	Older icap_service format without optional named parameters is
#	deprecated but supported for backward compatibility.
#
#Example:
#icap_service svcBlocker reqmod_precache bypass=0 icap://icap1.mydomain.net:1344/reqmod
#icap_service svcLogger reqmod_precache routing=on icap://icap2.mydomain.net:1344/respmod
#Default:
# none

#  TAG: icap_class
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	This deprecated option was documented to define an ICAP service
#	chain, even though it actually defined a set of similar, redundant
#	services, and the chains were not supported. 
#
#	To define a set of redundant services, please use the
#	adaptation_service_set directive. For service chains, use
#	adaptation_service_chain.
#Default:
# none

#  TAG: icap_access
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	This option is deprecated. Please use adaptation_access, which
#	has the same ICAP functionality, but comes with better
#	documentation, and eCAP support.
#Default:
# none

# eCAP OPTIONS
# -----------------------------------------------------------------------------

#  TAG: ecap_enable	on|off
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ecap option
#
#	Controls whether eCAP support is enabled.
#Default:
# ecap_enable off

#  TAG: ecap_service
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ecap option
#
#	Defines a single eCAP service
#
#	ecap_service servicename vectoring_point bypass service_url
#
#	vectoring_point = reqmod_precache|reqmod_postcache|respmod_precache|respmod_postcache
#		This specifies at which point of transaction processing the
#		eCAP service should be activated. *_postcache vectoring points
#		are not yet supported.
#	bypass = 1|0
#		If set to 1, the eCAP service is treated as optional. If the
#		service cannot be reached or malfunctions, Squid will try to
#		ignore any errors and process the message as if the service
#		was not enabled. No all eCAP errors can be bypassed.
#		If set to 0, the eCAP service is treated as essential and all
#		eCAP errors will result in an error page returned to the
#		HTTP client.
#	service_url = ecap://vendor/service_name?custom&cgi=style&parameters=optional
#
#Example:
#ecap_service service_1 reqmod_precache 0 ecap://filters-R-us/leakDetector?on_error=block
#ecap_service service_2 respmod_precache 1 icap://filters-R-us/virusFilter?config=/etc/vf.cfg
#Default:
# none

#  TAG: loadable_modules
#	Instructs Squid to load the specified dynamic module(s) or activate
#	preloaded module(s).
#Example:
#loadable_modules /usr/lib/MinimalAdapter.so
#Default:
# none

# MESSAGE ADAPTATION OPTIONS
# -----------------------------------------------------------------------------

#  TAG: adaptation_service_set
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ecap or --enable-icap-client option
#
#
#	Configures an ordered set of similar, redundant services. This is
#	useful when hot standby or backup adaptation servers are available.
#
#	    adaptation_service_set set_name service_name1 service_name2 ...
#
# 	The named services are used in the set declaration order. The first
#	applicable adaptation service from the set is used first. The next
#	applicable service is tried if and only if the transaction with the
#	previous service fails and the message waiting to be adapted is still
#	intact.
#
#	When adaptation starts, broken services are ignored as if they were
#	not a part of the set. A broken service is a down optional service.
#
#	The services in a set must be attached to the same vectoring point
#	(e.g., pre-cache) and use the same adaptation method (e.g., REQMOD).
#
#	If all services in a set are optional then adaptation failures are
#	bypassable. If all services in the set are essential, then a
#	transaction failure with one service may still be retried using
#	another service from the set, but when all services fail, the master
#	transaction fails as well.
#
#	A set may contain a mix of optional and essential services, but that
#	is likely to lead to surprising results because broken services become
#	ignored (see above), making previously bypassable failures fatal.
#	Technically, it is the bypassability of the last failed service that
#	matters.
#
#	See also: adaptation_access adaptation_service_chain
#
#Example:
#adaptation_service_set svcBlocker urlFilterPrimary urlFilterBackup
#adaptation service_set svcLogger loggerLocal loggerRemote
#Default:
# none

#  TAG: adaptation_service_chain
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ecap or --enable-icap-client option
#
#
#	Configures a list of complementary services that will be applied
#	one-by-one, forming an adaptation chain or pipeline. This is useful
#	when Squid must perform different adaptations on the same message.
#
#	    adaptation_service_chain chain_name service_name1 svc_name2 ...
#
# 	The named services are used in the chain declaration order. The first
#	applicable adaptation service from the chain is used first. The next
#	applicable service is applied to the successful adaptation results of
#	the previous service in the chain.
#
#	When adaptation starts, broken services are ignored as if they were
#	not a part of the chain. A broken service is a down optional service.
#
#	Request satisfaction terminates the adaptation chain because Squid
#	does not currently allow declaration of RESPMOD services at the
#	"reqmod_precache" vectoring point (see icap_service or ecap_service).
#
#	The services in a chain must be attached to the same vectoring point
#	(e.g., pre-cache) and use the same adaptation method (e.g., REQMOD).
#
#	A chain may contain a mix of optional and essential services. If an
#	essential adaptation fails (or the failure cannot be bypassed for
#	other reasons), the master transaction fails. Otherwise, the failure
#	is bypassed as if the failed adaptation service was not in the chain.
#
#	See also: adaptation_access adaptation_service_set
#
#Example:
#adaptation_service_chain svcRequest requestLogger urlFilter leakDetector
#Default:
# none

#  TAG: adaptation_access
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ecap or --enable-icap-client option
#
#	Sends an HTTP transaction to an ICAP or eCAP adaptation	service.
#
#	adaptation_access service_name allow|deny [!]aclname...
#	adaptation_access set_name     allow|deny [!]aclname...
#
#	At each supported vectoring point, the adaptation_access
#	statements are processed in the order they appear in this
#	configuration file. Statements pointing to the following services
#	are ignored (i.e., skipped without checking their ACL):
#
#	    - services serving different vectoring points
#	    - "broken-but-bypassable" services
#	    - "up" services configured to ignore such transactions
#              (e.g., based on the ICAP Transfer-Ignore header).
#
#        When a set_name is used, all services in the set are checked
#	using the same rules, to find the first applicable one. See
#	adaptation_service_set for details.
#
#	If an access list is checked and there is a match, the
#	processing stops: For an "allow" rule, the corresponding
#	adaptation service is used for the transaction. For a "deny"
#	rule, no adaptation service is activated.
#
#	It is currently not possible to apply more than one adaptation
#	service at the same vectoring point to the same HTTP transaction.
#
#        See also: icap_service and ecap_service
#
#Example:
#adaptation_access service_1 allow all
#Default:
# none

#  TAG: adaptation_service_iteration_limit
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ecap or --enable-icap-client option
#
#	Limits the number of iterations allowed when applying adaptation
#	services to a message. If your longest adaptation set or chain
#	may have more than 16 services, increase the limit beyond its
#	default value of 16. If detecting infinite iteration loops sooner
#	is critical, make the iteration limit match the actual number
#	of services in your longest adaptation set or chain.
#
#	Infinite adaptation loops are most likely with routing services.
#
#	See also: icap_service routing=1
#Default:
# adaptation_service_iteration_limit 16

#  TAG: adaptation_masterx_shared_names
# Note: This option is only available if Squid is rebuilt with the
#       --enable-ecap or --enable-icap-client option
#
#	For each master transaction (i.e., the HTTP request and response
#	sequence, including all related ICAP and eCAP exchanges), Squid
#	maintains a table of metadata. The table entries are (name, value)
#	pairs shared among eCAP and ICAP exchanges. The table is destroyed
#	with the master transaction.
#
#	This option specifies the table entry names that Squid must accept
#	from and forward to the adaptation transactions.
#
#	An ICAP REQMOD or RESPMOD transaction may set an entry in the 
#	shared table by returning an ICAP header field with a name 
#	specified in adaptation_masterx_shared_names. Squid will store 
#	and forward that ICAP header field to subsequent ICAP 
#	transactions within the same master transaction scope.
#
#	Only one shared entry name is supported at this time.
#
#Example:
## share authentication information among ICAP services
#adaptation_masterx_shared_names X-Subscriber-ID
#Default:
# none

#  TAG: icap_retry
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	This ACL determines which retriable ICAP transactions are
#	retried. Transactions that received a complete ICAP response
#	and did not have to consume or produce HTTP bodies to receive
#	that response are usually retriable.
#
#	icap_retry allow|deny [!]aclname ...
#
#	Squid automatically retries some ICAP I/O timeouts and errors
#	due to persistent connection race conditions.
#
#	See also: icap_retry_limit
#Default:
# icap_retry deny all

#  TAG: icap_retry_limit
# Note: This option is only available if Squid is rebuilt with the
#       --enable-icap-client option
#
#	Limits the number of retries allowed. When set to zero (default),
#	no retries are allowed.
#
#	Communication errors due to persistent connection race
#	conditions are unavoidable, automatically retried, and do not
#	count against this limit.
#
#	See also: icap_retry
#Default:
# icap_retry_limit 0

# DNS OPTIONS
# -----------------------------------------------------------------------------

#  TAG: check_hostnames
#	For security and stability reasons Squid can check
#	hostnames for Internet standard RFC compliance. If you want
#	Squid to perform these checks turn this directive on.
#Default:
# check_hostnames off

#  TAG: allow_underscore
#	Underscore characters is not strictly allowed in Internet hostnames
#	but nevertheless used by many sites. Set this to off if you want
#	Squid to be strict about the standard.
#	This check is performed only when check_hostnames is set to on.
#Default:
# allow_underscore on

#  TAG: cache_dns_program
# Note: This option is only available if Squid is rebuilt with the
#       --disable-internal-dns option
#
#	Specify the location of the executable for dnslookup process.
#Default:
# cache_dns_program /usr/libexec/dnsserver

#  TAG: dns_children
# Note: This option is only available if Squid is rebuilt with the
#       --disable-internal-dns option
#
#	The number of processes spawn to service DNS name lookups.
#	For heavily loaded caches on large servers, you should
#	probably increase this value to at least 10.  The maximum
#	is 32.  The default is 5.
#
#	You must have at least one dnsserver process.
#Default:
# dns_children 5

#  TAG: dns_retransmit_interval
#	Initial retransmit interval for DNS queries. The interval is
#	doubled each time all configured DNS servers have been tried.
#
#Default:
# dns_retransmit_interval 5 seconds

#  TAG: dns_timeout
#	DNS Query timeout. If no response is received to a DNS query
#	within this time all DNS servers for the queried domain
#	are assumed to be unavailable.
#Default:
# dns_timeout 2 minutes

#  TAG: dns_defnames	on|off
#	Normally the RES_DEFNAMES resolver option is disabled
#	(see res_init(3)).  This prevents caches in a hierarchy
#	from interpreting single-component hostnames locally.  To allow
#	Squid to handle single-component names, enable this option.
#Default:
# dns_defnames off

#  TAG: dns_nameservers
#	Use this if you want to specify a list of DNS name servers
#	(IP addresses) to use instead of those given in your
#	/etc/resolv.conf file.
#	On Windows platforms, if no value is specified here or in
#	the /etc/resolv.conf file, the list of DNS name servers are
#	taken from the Windows registry, both static and dynamic DHCP
#	configurations are supported.
#
#	Example: dns_nameservers 10.0.0.1 192.172.0.4
#Default:
# none

#  TAG: hosts_file
#	Location of the host-local IP name-address associations
#	database. Most Operating Systems have such a file on different
#	default locations:
#	- Un*X & Linux:    /etc/hosts
#	- Windows NT/2000: %SystemRoot%\system32\drivers\etc\hosts
#			   (%SystemRoot% value install default is c:\winnt)
#	- Windows XP/2003: %SystemRoot%\system32\drivers\etc\hosts
#			   (%SystemRoot% value install default is c:\windows)
#	- Windows 9x/Me:   %windir%\hosts
#			   (%windir% value is usually c:\windows)
#	- Cygwin:	   /etc/hosts
#
#	The file contains newline-separated definitions, in the
#	form ip_address_in_dotted_form name [name ...] names are
#	whitespace-separated. Lines beginning with an hash (#)
#	character are comments.
#
#	The file is checked at startup and upon configuration.
#	If set to 'none', it won't be checked.
#	If append_domain is used, that domain will be added to
#	domain-local (i.e. not containing any dot character) host
#	definitions.
#Default:
# hosts_file /etc/hosts

#  TAG: append_domain
#	Appends local domain name to hostnames without any dots in
#	them.  append_domain must begin with a period.
#
#	Be warned there are now Internet names with no dots in
#	them using only top-domain names, so setting this may
#	cause some Internet sites to become unavailable.
#
#Example:
# append_domain .yourdomain.com
#Default:
# none

#  TAG: ignore_unknown_nameservers
#	By default Squid checks that DNS responses are received
#	from the same IP addresses they are sent to.  If they
#	don't match, Squid ignores the response and writes a warning
#	message to cache.log.  You can allow responses from unknown
#	nameservers by setting this option to 'off'.
#Default:
# ignore_unknown_nameservers on

#  TAG: dns_v4_fallback
#	Standard practice with DNS is to lookup either A or AAAA records
#	and use the results if it succeeds. Only looking up the other if
#	the first attempt fails or otherwise produces no results.
#
#	That policy however will cause squid to produce error pages for some
#	servers that advertise AAAA but are unreachable over IPv6.
#
#	If this is ON  squid will always lookup both AAAA and A, using both.
#	If this is OFF squid will lookup AAAA and only try A if none found.
#
#	WARNING: There are some possibly unwanted side-effects with this on:
#		*) Doubles the load placed by squid on the DNS network.
#		*) May negatively impact connection delay times.
#Default:
# dns_v4_fallback on

#  TAG: dns_v4_first
#	With the IPv6 Internet being as fast or faster than IPv4 Internet
#	for most networks Squid prefers to contact websites over IPv6.
#
#	This option reverses the order of preference to make Squid contact
#	dual-stack websites over IPv4 first. Squid will still perform both
#	IPv6 and IPv4 DNS lookups before connecting.
#
#	WARNING:
#	  This option will restrict the situations under which IPv6
#	  connectivity is used (and tested). Hiding network problems
#	  which would otherwise be detected and warned about.
#Default:
# dns_v4_first off

#  TAG: ipcache_size	(number of entries)
#Default:
# ipcache_size 1024

#  TAG: ipcache_low	(percent)
#Default:
# ipcache_low 90

#  TAG: ipcache_high	(percent)
#	The size, low-, and high-water marks for the IP cache.
#Default:
# ipcache_high 95

#  TAG: fqdncache_size	(number of entries)
#	Maximum number of FQDN cache entries.
#Default:
# fqdncache_size 1024

# MISCELLANEOUS
# -----------------------------------------------------------------------------

#  TAG: memory_pools	on|off
#	If set, Squid will keep pools of allocated (but unused) memory
#	available for future use.  If memory is a premium on your
#	system and you believe your malloc library outperforms Squid
#	routines, disable this.
#Default:
# memory_pools on

#  TAG: memory_pools_limit	(bytes)
#	Used only with memory_pools on:
#	memory_pools_limit 50 MB
#
#	If set to a non-zero value, Squid will keep at most the specified
#	limit of allocated (but unused) memory in memory pools. All free()
#	requests that exceed this limit will be handled by your malloc
#	library. Squid does not pre-allocate any memory, just safe-keeps
#	objects that otherwise would be free()d. Thus, it is safe to set
#	memory_pools_limit to a reasonably high value even if your
#	configuration will use less memory.
#
#	If set to none, Squid will keep all memory it can. That is, there
#	will be no limit on the total amount of memory used for safe-keeping.
#
#	To disable memory allocation optimization, do not set
#	memory_pools_limit to 0 or none. Set memory_pools to "off" instead.
#
#	An overhead for maintaining memory pools is not taken into account
#	when the limit is checked. This overhead is close to four bytes per
#	object kept. However, pools may actually _save_ memory because of
#	reduced memory thrashing in your malloc library.
#Default:
# memory_pools_limit 5 MB

#  TAG: forwarded_for	on|off|transparent|truncate|delete
#	If set to "on", Squid will append your client's IP address
#	in the HTTP requests it forwards. By default it looks like:
#
#		X-Forwarded-For: 192.1.2.3
#
#	If set to "off", it will appear as
#
#		X-Forwarded-For: unknown
#
#	If set to "transparent", Squid will not alter the
#	X-Forwarded-For header in any way.
#
#	If set to "delete", Squid will delete the entire
#	X-Forwarded-For header.
#
#	If set to "truncate", Squid will remove all existing
#	X-Forwarded-For entries, and place itself as the sole entry.
#Default:
# forwarded_for on

#  TAG: cachemgr_passwd
#	Specify passwords for cachemgr operations.
#
#	Usage: cachemgr_passwd password action action ...
#
#	Some valid actions are (see cache manager menu for a full list):
#		5min
#		60min
#		asndb
#		authenticator
#		cbdata
#		client_list
#		comm_incoming
#		config *
#		counters
#		delay
#		digest_stats
#		dns
#		events
#		filedescriptors
#		fqdncache
#		histograms
#		http_headers
#		info
#		io
#		ipcache
#		mem
#		menu
#		netdb
#		non_peers
#		objects
#		offline_toggle *
#		pconn
#		peer_select
#		reconfigure *
#		redirector
#		refresh
#		server_list
#		shutdown *
#		store_digest
#		storedir
#		utilization
#		via_headers
#		vm_objects
#
#	* Indicates actions which will not be performed without a
#	  valid password, others can be performed if not listed here.
#
#	To disable an action, set the password to "disable".
#	To allow performing an action without a password, set the
#	password to "none".
#
#	Use the keyword "all" to set the same password for all actions.
#
#Example:
# cachemgr_passwd secret shutdown
# cachemgr_passwd lesssssssecret info stats/objects
# cachemgr_passwd disable all
#Default:
# none

#  TAG: client_db	on|off
#	If you want to disable collecting per-client statistics,
#	turn off client_db here.
#Default:
# client_db on

#  TAG: refresh_all_ims	on|off
#	When you enable this option, squid will always check
#	the origin server for an update when a client sends an
#	If-Modified-Since request.  Many browsers use IMS
#	requests when the user requests a reload, and this
#	ensures those clients receive the latest version.
#
#	By default (off), squid may return a Not Modified response
#	based on the age of the cached version.
#Default:
# refresh_all_ims off

#  TAG: reload_into_ims	on|off
#	When you enable this option, client no-cache or ``reload''
#	requests will be changed to If-Modified-Since requests.
#	Doing this VIOLATES the HTTP standard.  Enabling this
#	feature could make you liable for problems which it
#	causes.
#
#	see also refresh_pattern for a more selective approach.
#Default:
# reload_into_ims off

#  TAG: maximum_single_addr_tries
#	This sets the maximum number of connection attempts for a
#	host that only has one address (for multiple-address hosts,
#	each address is tried once).
#
#	The default value is one attempt, the (not recommended)
#	maximum is 255 tries.  A warning message will be generated
#	if it is set to a value greater than ten.
#
#	Note: This is in addition to the request re-forwarding which
#	takes place if Squid fails to get a satisfying response.
#Default:
# maximum_single_addr_tries 1

#  TAG: retry_on_error
#	If set to ON Squid will automatically retry requests when
#	receiving an error response with status 403 (Forbidden),
#	500 (Internal Error), 501 or 503 (Service not available).
#	Status 502 and 504 (Gateway errors) are always retried.
#	
#	This is mainly useful if you are in a complex cache hierarchy to
#	work around access control errors.
#	
#	NOTE: This retry will attempt to find another working destination.
#	Which is different from the server which just failed.
#Default:
# retry_on_error off

#  TAG: as_whois_server
#	WHOIS server to query for AS numbers.  NOTE: AS numbers are
#	queried only when Squid starts up, not for every request.
#Default:
# as_whois_server whois.ra.net

#  TAG: offline_mode
#	Enable this option and Squid will never try to validate cached
#	objects.
#Default:
# offline_mode off

#  TAG: uri_whitespace
#	What to do with requests that have whitespace characters in the
#	URI.  Options:
#
#	strip:  The whitespace characters are stripped out of the URL.
#		This is the behavior recommended by RFC2396.
#	deny:   The request is denied.  The user receives an "Invalid
#		Request" message.
#	allow:  The request is allowed and the URI is not changed.  The
#		whitespace characters remain in the URI.  Note the
#		whitespace is passed to redirector processes if they
#		are in use.
#	encode:	The request is allowed and the whitespace characters are
#		encoded according to RFC1738.  This could be considered
#		a violation of the HTTP/1.1
#		RFC because proxies are not allowed to rewrite URI's.
#	chop:	The request is allowed and the URI is chopped at the
#		first whitespace.  This might also be considered a
#		violation.
#Default:
# uri_whitespace strip

#  TAG: chroot
#	Specifies a directory where Squid should do a chroot() while
#	initializing.  This also causes Squid to fully drop root
#	privileges after initializing.  This means, for example, if you
#	use a HTTP port less than 1024 and try to reconfigure, you may
#	get an error saying that Squid can not open the port.
#Default:
# none

#  TAG: balance_on_multiple_ip
#	Modern IP resolvers in squid sort lookup results by preferred access.
#	By default squid will use these IP in order and only rotates to
#	the next listed when the most preffered fails.
#
#	Some load balancing servers based on round robin DNS have been
#	found not to preserve user session state across requests
#	to different IP addresses.
#
#	Enabling this directive Squid rotates IP's per request.
#Default:
# balance_on_multiple_ip off

#  TAG: pipeline_prefetch
#	To boost the performance of pipelined requests to closer
#	match that of a non-proxied environment Squid can try to fetch
#	up to two requests in parallel from a pipeline.
#
#	Defaults to off for bandwidth management and access logging
#	reasons.
#
#	WARNING: pipelining breaks NTLM and Negotiate/Kerberos authentication.
#Default:
# pipeline_prefetch off

#  TAG: high_response_time_warning	(msec)
#	If the one-minute median response time exceeds this value,
#	Squid prints a WARNING with debug level 0 to get the
#	administrators attention.  The value is in milliseconds.
#Default:
# high_response_time_warning 0

#  TAG: high_page_fault_warning
#	If the one-minute average page fault rate exceeds this
#	value, Squid prints a WARNING with debug level 0 to get
#	the administrators attention.  The value is in page faults
#	per second.
#Default:
# high_page_fault_warning 0

#  TAG: high_memory_warning
#	If the memory usage (as determined by mallinfo) exceeds
#	this amount, Squid prints a WARNING with debug level 0 to get
#	the administrators attention.
#Default:
# high_memory_warning 0 KB

#  TAG: sleep_after_fork	(microseconds)
#	When this is set to a non-zero value, the main Squid process
#	sleeps the specified number of microseconds after a fork()
#	system call. This sleep may help the situation where your
#	system reports fork() failures due to lack of (virtual)
#	memory. Note, however, if you have a lot of child
#	processes, these sleep delays will add up and your
#	Squid will not service requests for some amount of time
#	until all the child processes have been started.
#	On Windows value less then 1000 (1 milliseconds) are
#	rounded to 1000.
#Default:
# sleep_after_fork 0

#  TAG: windows_ipaddrchangemonitor	on|off
#	On Windows Squid by default will monitor IP address changes and will 
#	reconfigure itself after any detected event. This is very useful for
#	proxies connected to internet with dial-up interfaces.
#	In some cases (a Proxy server acting as VPN gateway is one) it could be
#	desiderable to disable this behaviour setting this to 'off'.
#	Note: after changing this, Squid service must be restarted.
#Default:
# windows_ipaddrchangemonitor on

#  TAG: max_filedescriptors
#	The maximum number of filedescriptors supported.
#
#	The default "0" means Squid inherits the current ulimit setting.
#
#	Note: Changing this requires a restart of Squid. Also
#	not all comm loops supports large values.
#Default:
# max_filedescriptors 0