I am a checkpoint certified security admin and engineer. I have used Astaro (also great) for years. I also create IPTables based firewalls by hand regularly, and edit previously made IPTables every day as part of my job and also for fun. I downloaded Firestarter and set it up on my new Fedora Core 3 machine, and it worked. No problems. Great install, great initial configuration Wizard, and great editing capabilities. I especially like the floating app for monitoring and configuring on the fly. Very nice!!