Anyone have any linux firewall/security solutions

[MrRaza]

word,

I'm interested in finding out some solid information on linux security solutions, and if any can point to me a highly configurable software or to some more information. PLEASE! it would help me alot.

[Barabajagal]

AVG.

[MrRaza]

AVG.

leet.

[Kp]

Netfilter.