INTRODUCTION
This article describes how to change the port that Remote Desktop listens on.

Note The Remote Desktop Connection Client for the Mac supports only port 3389. 3389 is the default port.

Warning The Remote Assistance feature in Microsoft Windows XP may not work correctly if you change the listening port.

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
307711 (http://support.microsoft.com/kb/307711/) Remote Assistance invitation file does not contain correct port number
To change the port that Remote Desktop listens on, follow these steps.

Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

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.

Originally Posted by Skylinux @ 2006-08-29 10:24:33