I had a few questions about this... my idea was that if I filtered out all ports except the ones I wanted to use, I would essentially lock my system down pretty well. The first problem I ran into while doing this was the temporary ports that IE, Outlook, and other various programs use (machine side, not server side) to access the net. Simply opening port 80(http) and 53(DNS)will not allow you to browse the net. I was wondering if anyone knew the range of ports that windows uses for this. I know its around the 1200 range or so... can anyone verify this? and if so, specifiy more specifically _what_ ports it is? thanks
-Chris
-Chris