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ntop is a network probe that shows network usage in a way similar to
what top does for processes. In interactive mode, it displays the
network status on the user's terminal. In Web mode, it acts as a Web
server, creating an HTML dump of the network status.
It sports a NetFlow/sFlow emitter/collector, an HTTP-based client
interface for creating ntop-centric monitoring applications, and
RRD for persistently storing traffic statistics.
ntop requires rrdtool, which is also available at Slackbuilds.org.
ntop needs to run under its own user/group. This has been assigned to
the following by SlackBuilds.org, but feel free to change it on your
system for consistency with local assignments.
User: ntop UID: 212 GID: 212
group: ntop GID: 212
If you want to change that, you'll need to change the script and
the rc.ntop to reflect your changes.
Logs are placed in /var/log/ntop/ and will be rotated every week. The
log rotation will restart the ntop server which will reset the ntop
statistics. If you want to keep the statistics you have to edit or delete
the /etc/logrotate.d/ntop file.
If you want to start ntop on system bootup:
/etc/rc.d/rc.local
==================
# Startup ntop
if [ -x /etc/rc.d/rc.ntop ]; then
/etc/rc.d/rc.ntop start
fi
/etc/rc.d/rc.local_shutdown
===========================
# Stop ntop
if [ -x /etc/rc.d/rc.ntop ]; then
/etc/rc.d/rc.ntop stop
fi
Additionally, you'll have to set the rc script to be executable just
like any other Slackware rc script.
# chmod +x /etc/rc.d/rc.ntop
When ntop is installed at the first time, you MUST set the
administration password for ntop (user 'admin'). You do that
by running ntop with the option -A (or --set-admin-password) as root.
# /usr/bin/ntop -P <ntop_homedirectory> -u <ntopuser> -A
For example:
# /usr/bin/ntop -P /var/lib/ntop -u ntop -A
It will prompt you for the password and then exit.
Running ntop:
Once ntop has started and configured correctly, you should be able to look
at all the data it's collected by pointing your browser at:
http://localhost:3000/
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