LXer: Howto Configure a Software Firewall using Firestarter
 

Published at LXer:

One of the great features included in Linux is the IPtables firewall. Unfortunately, its command-line use is rather complex, and it can be intimidating for even experienced Linux users to configure it. Firestarter is a friendly graphical interface that allows you to configure a software firewall in Linux using the built-in IPtables/IPchains utilities.

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