SASs Accounting Statistics 1.0.2

Sasacct fetches traffic stats via ipchains, ipfstat, iptables, pf, Cisco IP accounting, and SNMP. [COPYRIGHT=]

Using external program you have 4 options:
a) Linux 2.2.x with ipchains
b) Linux 2.4.x with iptables
c) OpenBSD using Daren Reeds ipf
d) OpenBSD >= 3.0 with pf

Using SNMP you have 2 options for accounting:
a) query the router for byte counters for specific interface
b) if your router is cisco you can use the ip accounting feature
and get a table with source and destination ips and a byte counter
and extract the needed information.

For displaying the collected information sasacct has cgi-script with username/password authentication which can display the data on a per daily basis generating
on-the-fly graphics with bandwith utilization. It can also generate static bandwith utilization graphics on 5 minutes interval. Information on how to configure SASacct is included
in the package.