Guarddog sucks in the mom+pop way. I have no desire to (VERY) manually configure my firewall.
I'll go back to Firestarter (http://firestarter.sourceforge.net). In that application all I have to do is block port 67 and 68 to get a perfect TruStealth score on http://grc.com.
I have no idea as to why people think Guarddog rules.
Firestarter is incidentally a native Gnome apllication. Maybe I should test Gnoppix