[KLUG Members] Network use monitoring with open source software?

[Adam Williams]

>I am interested in some feedback on the use of open source software to
>perform network monitoring directly related to a company's Internet
>connection.
>Tools that I use now include NTOP (http://www.ntop.org), Snort
>(http://www.snort.org), and tcpdump (http://www.tcpdump.org).  Web Caching
>would provide an additional source of information, but caching is not an
>option at this time.  My programming skills are limited and I am interested
>in open source solutions that users of this group use to monitor and
>generate reports on the use of an Internet connection.   The reporting I am
>interested in would show who went where and when on the Internet and how
>much data was transferred over what protocol.  I am working on using NTOP
>with the -g switch to log information to an SQL database and develop reports
>from there, but if there is already an open source solution available I
>could save some valuable time.  Thanks in advance.

Seems the easiest solution would be to simply log the packets through
the firewall to syslog.