Probably not the best place to be posting something like this, moderators feel free to remove if inappropriate.
I have started a project called sphirewall, as an opensource network firewall solution similar in concept to other auth firewalls like checkpoint. We have just released the first version of our software and are looking for more developers/testers/users that would be interested in helping get this project off the ground.
Have a look at
http://sphirewall.sourceforge.net/
Cheers
Mshindo