How-To Geek on MSN

How to Check Open TCP/IP Ports in Windows

Run the command "netstat -ab" in an elevated Command Prompt, PowerShell, or Terminal window to see a list of applications and ...
Ars Technica

How can I test which ports my school leaves open (if any)?

I'd like to be able to Remote Desktop into my school machine from off campus. What would be the best way to see if any ports are not blocked by my school?<BR><BR>I was thinking I could scan my IP (we ...