How do I change my default RDP Remote Desktop Port?

Start Registry Editor (if running windows 7 or windows 10, just click start and type regedit. It should appear above under programs.
Navigate down the registry tree to : HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\
Right click on PortNumber and click Modify, and then select Decimal.
Enter the new port number and then click OK.
Quit the Registry Editor and Restart the computer.