I prefer Firewall Builder.
http://www.fwbuilder.org/
I'll second that.
I use fwbuilder because it's the only iptables GUI I've come across which understands bridging firewalls.
-- ----------------------------------------------------------- Nigel Wade, System Administrator, Space Plasma Physics Group, University of Leicester, Leicester, LE1 7RH, UK E-mail : nmw@xxxxxxxxxxxx Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555