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Firestarter is an easy to use firewall for Ubuntu that includes a GUI administration tool. Installation of this firewall is as easy as using it. In this HowTo we will cover how to install the firewall.
Open a terminal window, and type in the following command:

sudo apt-get install firestarter

After the installation is finished, you can find the administration GUI at System \ Administration \ Firestarter:




When you launch the GUI for the first time, it will take you through a setup wizard:



Click forward, and you will be able to select the network device. If you are using DHCP for your machine, make sure you select that checkbox here:



Click Forward, and then Forward again. You will see the final screen of the wizard:



Click the save button and you will see the normal GUI screen:



This GUI is accessible from the tray icon, shown here:

 

The firewall is now installed. The firewall will continue running whether or not you are running the GUI, but the GUI will not be started up automatically unless you add it to the startup list using this path:

sudo /usr/sbin/firestarter

Stay tuned for more articles covering common firewall administration tasks.