diff options
Diffstat (limited to 'doc/tor.md')
| -rw-r--r-- | doc/tor.md | 116 |
1 files changed, 58 insertions, 58 deletions
diff --git a/doc/tor.md b/doc/tor.md index 8a2aef2d07..e38ada5bd6 100644 --- a/doc/tor.md +++ b/doc/tor.md @@ -21,39 +21,39 @@ information in the debug log about your Tor configuration. The first step is running Bitcoin Core behind a Tor proxy. This will already anonymize all outgoing connections, but more is possible. - -proxy=ip:port Set the proxy server. If SOCKS5 is selected (default), this proxy - server will be used to try to reach .onion addresses as well. - You need to use -noonion or -onion=0 to explicitly disable - outbound access to onion services. - - -onion=ip:port Set the proxy server to use for Tor onion services. You do not - need to set this if it's the same as -proxy. You can use -onion=0 - to explicitly disable access to onion services. - Note: Only the -proxy option sets the proxy for DNS requests; - with -onion they will not route over Tor, so use -proxy if you - have privacy concerns. - - -listen When using -proxy, listening is disabled by default. If you want - to manually configure an onion service (see section 3), you'll - need to enable it explicitly. - - -connect=X When behind a Tor proxy, you can specify .onion addresses instead - -addnode=X of IP addresses or hostnames in these parameters. It requires - -seednode=X SOCKS5. In Tor mode, such addresses can also be exchanged with - other P2P nodes. - - -onlynet=onion Make outgoing connections only to .onion addresses. Incoming - connections are not affected by this option. This option can be - specified multiple times to allow multiple network types, e.g. - ipv4, ipv6 or onion. If you use this option with values other - than onion you *cannot* disable onion connections; outgoing onion - connections will be enabled when you use -proxy or -onion. Use - -noonion or -onion=0 if you want to be sure there are no outbound - onion connections over the default proxy or your defined -proxy. + -proxy=ip:port Set the proxy server. If SOCKS5 is selected (default), this proxy + server will be used to try to reach .onion addresses as well. + You need to use -noonion or -onion=0 to explicitly disable + outbound access to onion services. + + -onion=ip:port Set the proxy server to use for Tor onion services. You do not + need to set this if it's the same as -proxy. You can use -onion=0 + to explicitly disable access to onion services. + Note: Only the -proxy option sets the proxy for DNS requests; + with -onion they will not route over Tor, so use -proxy if you + have privacy concerns. + + -listen When using -proxy, listening is disabled by default. If you want + to manually configure an onion service (see section 3), you'll + need to enable it explicitly. + + -connect=X When behind a Tor proxy, you can specify .onion addresses instead + -addnode=X of IP addresses or hostnames in these parameters. It requires + -seednode=X SOCKS5. In Tor mode, such addresses can also be exchanged with + other P2P nodes. + + -onlynet=onion Make outgoing connections only to .onion addresses. Incoming + connections are not affected by this option. This option can be + specified multiple times to allow multiple network types, e.g. + ipv4, ipv6 or onion. If you use this option with values other + than onion you *cannot* disable onion connections; outgoing onion + connections will be enabled when you use -proxy or -onion. Use + -noonion or -onion=0 if you want to be sure there are no outbound + onion connections over the default proxy or your defined -proxy. In a typical situation, this suffices to run behind a Tor proxy: - ./bitcoind -proxy=127.0.0.1:9050 + ./bitcoind -proxy=127.0.0.1:9050 ## 2. Automatically create a Bitcoin Core onion service @@ -152,57 +152,57 @@ details). You can also manually configure your node to be reachable from the Tor network. Add these lines to your `/etc/tor/torrc` (or equivalent config file): - HiddenServiceDir /var/lib/tor/bitcoin-service/ - HiddenServicePort 8333 127.0.0.1:8334 + HiddenServiceDir /var/lib/tor/bitcoin-service/ + HiddenServicePort 8333 127.0.0.1:8334 The directory can be different of course, but virtual port numbers should be equal to your bitcoind's P2P listen port (8333 by default), and target addresses and ports should be equal to binding address and port for inbound Tor connections (127.0.0.1:8334 by default). - -externalip=X You can tell bitcoin about its publicly reachable addresses using - this option, and this can be an onion address. Given the above - configuration, you can find your onion address in - /var/lib/tor/bitcoin-service/hostname. For connections - coming from unroutable addresses (such as 127.0.0.1, where the - Tor proxy typically runs), onion addresses are given - preference for your node to advertise itself with. - - You can set multiple local addresses with -externalip. The - one that will be rumoured to a particular peer is the most - compatible one and also using heuristics, e.g. the address - with the most incoming connections, etc. - - -listen You'll need to enable listening for incoming connections, as this - is off by default behind a proxy. - - -discover When -externalip is specified, no attempt is made to discover local - IPv4 or IPv6 addresses. If you want to run a dual stack, reachable - from both Tor and IPv4 (or IPv6), you'll need to either pass your - other addresses using -externalip, or explicitly enable -discover. - Note that both addresses of a dual-stack system may be easily - linkable using traffic analysis. + -externalip=X You can tell bitcoin about its publicly reachable addresses using + this option, and this can be an onion address. Given the above + configuration, you can find your onion address in + /var/lib/tor/bitcoin-service/hostname. For connections + coming from unroutable addresses (such as 127.0.0.1, where the + Tor proxy typically runs), onion addresses are given + preference for your node to advertise itself with. + + You can set multiple local addresses with -externalip. The + one that will be rumoured to a particular peer is the most + compatible one and also using heuristics, e.g. the address + with the most incoming connections, etc. + + -listen You'll need to enable listening for incoming connections, as this + is off by default behind a proxy. + + -discover When -externalip is specified, no attempt is made to discover local + IPv4 or IPv6 addresses. If you want to run a dual stack, reachable + from both Tor and IPv4 (or IPv6), you'll need to either pass your + other addresses using -externalip, or explicitly enable -discover. + Note that both addresses of a dual-stack system may be easily + linkable using traffic analysis. In a typical situation, where you're only reachable via Tor, this should suffice: - ./bitcoind -proxy=127.0.0.1:9050 -externalip=7zvj7a2imdgkdbg4f2dryd5rgtrn7upivr5eeij4cicjh65pooxeshid.onion -listen + ./bitcoind -proxy=127.0.0.1:9050 -externalip=7zvj7a2imdgkdbg4f2dryd5rgtrn7upivr5eeij4cicjh65pooxeshid.onion -listen (obviously, replace the .onion address with your own). It should be noted that you still listen on all devices and another node could establish a clearnet connection, when knowing your address. To mitigate this, additionally bind the address of your Tor proxy: - ./bitcoind ... -bind=127.0.0.1 + ./bitcoind ... -bind=127.0.0.1 If you don't care too much about hiding your node, and want to be reachable on IPv4 as well, use `discover` instead: - ./bitcoind ... -discover + ./bitcoind ... -discover and open port 8333 on your firewall (or use port mapping, i.e., `-upnp` or `-natpmp`). If you only want to use Tor to reach .onion addresses, but not use it as a proxy for normal IPv4/IPv6 communication, use: - ./bitcoind -onion=127.0.0.1:9050 -externalip=7zvj7a2imdgkdbg4f2dryd5rgtrn7upivr5eeij4cicjh65pooxeshid.onion -discover + ./bitcoind -onion=127.0.0.1:9050 -externalip=7zvj7a2imdgkdbg4f2dryd5rgtrn7upivr5eeij4cicjh65pooxeshid.onion -discover ## 4. Privacy recommendations |