iptables and snort

["Col @ Home" <home@jibber.net>]

Hi,

Am trying to set up a firewall on a Debian linux machine using iptables. New
to linux, can anybody point me in the direction of
a good guide to configuring a firewall using iptables?

I also want to get snort and acidlab going. Any help on that would be
appreciated as well.

I am a bit paranoid about security, are there any programs that can perform
security audits?

Thanks!
C.