How to Change Default Listening Port of RDP

In light of the most recent Microsoft's critical update MS12-020 released last March, those computers facing the Internet with Remote Desktop Protocol enabled should re-configure its default listening port other than port 3389 as a workaround. MS12-020 is labeled as critical because it could allow intruders to obtain LocalSystem control on a computer with RDP enabled.

 To change the port that Remote Desktop Protocol listens, you need to follow these steps,

1. Start Registry Editor.
2. Locate and then click the following registry subkey:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber
3. On the Edit menu, click Modify, and then click Decimal.
4. Type the new port number, and then click OK.
5. Quit Registry Editor.
6. Restart the computer.