Simple Port Blocker?

Question

Does anyone have any recommendations for very simplistic port blockers? I recently gained admin access to my machine at work and would like to block outside access to all ports except ones that I specify. I need it be be a standalone application (no install) so that I can use it "on-the-fly". The main reason for this is to disable access to remote monitoring without tampering with the computer (i.e. cutoff it's access vs disabling their software). So basically I want to have my computer work like it normally does, but be able to launch a port blocker when I don't feel like being snooped on.

Answer 1

I think this might be what you are looking for:

http://www.topshareware.com/Emsa-Port-Bl...