Very Computer

hi,
  we connect to internet by adsl,and the linux box worked as the
gateway.
  someone can tell me a software for linux can monitor & log the
network traffic?
  we want to monitor the current network traffic for every
computer,and the target site accessing.And logging the every site
accessed for a week.

thanks.

wy.

Won't ipchains do logging? If it won't, then fwctl will, I think.

--Wylfing

Quote:>hi,
>  we connect to internet by adsl,and the linux box worked as the
>gateway.
>  someone can tell me a software for linux can monitor & log the
>network traffic?

logging network traffic might proove to be a little difficult, however
logging each internal pc's ip activity might be what your asking.

Quote:>  we want to monitor the current network traffic for every
>computer,and the target site accessing.And logging the every site
>accessed for a week.

I'd use something like ipac (ip accounting) this will allow you to see
what internal machines are doing and how much traffic they are
producing with each other, and externally. As for seeing what sites
they access, it might proove a little difficult. If your refering to
just http traffic from these machines, then install squid and let them
all use the squid cache... then once a week run a report to produce
the most hit sites :) etc

Quote:

>thanks.

>wy.

Check out snort.  It does more than log, its an IDS too.

Yes, snort (http://www.snort.org) combined with snarf
(http://www.silicondefense.com/software/snortsnarf/) do a pretty good job

put a firewall between your internet and your intranet with
iptables.(http://www.linuxguruz.org/iptables/) All of these three will cost
you around a full week of job to configure but that is all  and is pretty
conveniant and efficient.

Quote:> Check out snort.  It does more than log, its an IDS too.