Knowing what app listens to a port (slightly off topic)

Hello,
I am having problems : a application is listening on port 80 and I can't determine which it is. I can't start my servlet web container since it is also listening to port 80. I run windows. What is the command that will tell me what the application that is listening to port 80?
Thanks in advance,
Julien.

In Win32, you can open a command prompt and type "netstat -o" and press Enter. That will give you a list of all TCP activitiy along with the process ID that goes with each entry.
You can then bring up your Task Manager, select the Processes tab, and then pick View | Select Columns from the menu bar, check PID, and click OK. Using the process ID, you should now be able to match up TCP activity with an image name in the Task Manager Processes window.

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