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How to find open ports?
asked Jan 12, 2011 by triuser (1,781 points)

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you can use netstat command line.

To display all open ports, open DOS command, type netstat and press Enter.
To list all listening ports, use netstat -an |find /i "listening" command.
To see what ports your computer actually communicates with, use netstat -an |find /i "established"
To find specified open port, use find switch. For example, to find if the port 3389 is open or not, do netstat -an |find /i "3389".
You can use PULIST from the Windows Resource Kit to find which process is using a specified port. For example, pulist |find /i "4125" may display
answered Jan 20, 2011 by trianswer (22,754 points)
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To display all open ports, open DOS command, type netstat and press Enter.
answered Jan 20, 2011 by trianswer (22,754 points)

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