Linux Firewall

Does anyone know where I can find some Documentation on building a linux firewall.

Try these links.

www.grennan.com
www.linux-firewall-tools.com

Thanks for the help

I recently started working with Shorewall (www.shorewall.net). It uses IPTables and IPChains. You may find it useful!
Ciao,
N

If you want have a firewall...You can use iptables...It basic and power.

You can go to link (Source Code, Binary, Document, Script, Addon...etc)

http://www.iptables.org/

Special: Iptables have lot of Script for work coniguration...

You can find Script of iptables at:

http://freshmeat.net