Checking Application running on a Port

Source:http://spherebox.com/2007/07/11/check-what-port-an-application-is-using/

Transcript:

Open up a command prompt:

1. Start | Run | type cmd | Enter
2. Type netstat -aon | findstr “[port number]”
3. Take note of the numbers on the last line. This is the PID or Process ID.
4. Type tasklist | findstr “[PID]” and this will return the application corresponding to that PID.
5. Once PID is determined, you can now kill it in Task Manager or kill it typing tskill at the command prompt.

For example:

1. I type netstat -aon | findstr “8080″ at command prompt (I’m on a proxy by the way)
2. I see that the PID is 3624
3. I type tasklist | findstr “3624″ to find what PID 3624 is and it points to msnmsgr.exe which is MSN/Live Messenger.
4. I can now kill MSN Messenger from Task Manager or type tskill 3624