Hello all,

There is a very nice pice of software called Firewall builder. It comes with a GUI and is very feature rich. http://www.fwbuilder.org/

It's well documented, allowes you do block, redirect, log, Nat, etc.... Very nice for both novice & expirienced users. You build your rules graphicly and deploy them via ssh, create your Firewall RCS and so much more.

Hope it helps.

Nassri