Hey folks,

I need to test a bunch of application error states with a network app. I want a simple firewall-esque application that will let me block all traffic on a specific port.

I can probably do this with the windows firewall, but I'd prefer something that gives me a better indication that things are being blocked.

Try this list. Comodo and Zone Alarm are on it.

http://www.iopus.com/guides/free-firewall.htm

I would suggest though you find a differrent source for the downloads instead of download.com.