Both you and Matador fail to notice or note that Firestarter has the ability to blacklist ALL outgoing services, allowing access only with approval via Firestarter's root access [password required].Like ZONEALARM and many other SPENDows firewall applications, you have the ability to work at the highest level of restriction by default.
What the article fails to note is that FIRESTARTER is simply a program to control built in firewall support [iptables] present within Linux, an evolution from the original offering that added iptables support when not present.
Most SPENDows users will be very comfortable using FIRESTARTER, as the wizard does all necessary work to turn on an operating system level firewall control.
You have to go beyond what you see in the article to fully appreciate the power of this free add-on desktop firewall. »