Fedora's iptables Rule Generator
Fedora comes with a program called lokkit that you can use to generate a very rudimentary firewall rule set. It prompts for the level of security and then gives you the option of doing simple customizations. It is a good place for beginners to start on a test system so that they can see a general rule structure.
Like the service iptables save command, lokkit saves the firewall rules in a new /etc/sysconfig/iptables file for use on the next reboot.
Once you have become familiar with the iptables syntax, it's best to write scripts that you can comment and then save them to /etc/sysconfig/iptables. It makes them much more manageable and readable.
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