Remote Desktop features in Microsoft Windows XP Professional can be used to connect to your computer from another remote computer.
Here’s an article on steps to change the port that Remote Desktop listens on.
Note: The Remote Desktop Connection Client for the Mac is supportive to only port 3389 which is the default port.
Warning: If the listening port is changed, the Remote Assistance feature in Microsoft Windows XP may not work correctly.
To change the port that Remote Desktop listens on, follow the below steps –