I need to set up port forwarding as part of my firewall script for a Debian box I've set up. I've got the general idea on how to set up port forwarding using iptables but I want to make sure I get it ...

If you want to learn the in's and out's of iptables, you can do everything from the command line. If you want to save your sanity, there is a tool called firewallbuilder. It will allow you to ...