How can I open a particular port on my machine for torrent download and how can I know which all port are open ?
closed as off topic by Chris Andrè Dale, Rory Alsop♦ Feb 9 '12 at 11:12
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To be as general as the question posed, the answer is yes. Starting a built-in service such as Terminal Services on Windows XP that advertises a port will open the port the service advertises (TS is 3389)...stopping the service will close connections to that port since nothing's listening on the other end. If you would like to be more specific I'll try to give you more specific answers.