I still prefer a flat ascii file either loading the rules one at a time, or the built in iptables save/restore which basically does the same thing. But if you like/want/need a GUI application, then skip the lokkit firewall configuration tool in favor of system-config-firewall. It makes configuration of your firewall as easy as the simple Windows firewall, but with the option detail you expect from Linux.

A simple Tkinter demo to display a window with some buttons on it for a front end installer app. The buttons just quit in this example, but you can see the event handlers towards the bottom that would make it easy to tweak. I’m still looking for a …