Monitoring network performance/bandwidth of OpenBSD firewall

[Mathew Anderson <mathew_(_at_)_nm_(_dot_)_net>]

Hello - I am using an OpenBSD box as a firewall.  Overall this has been an
impressive firewall.  I was wonder what the best way to measure the
bandwidth that is passing though the fw.  I'd like to graph the output
(mrtg or something)..

Any pointers would be excellent.

Thanks

Mathew Anderson
Systems Administration
NM Technet     Oso Grande Technologies, Inc.
mathew_(_at_)_nm_(_dot_)_net  mathew_(_at_)_osogrande_(_dot_)_net