Hi all, I know this is an old tip but I needed it last week and figured that I should keep it on my blog. I was trying to change the default port of my terminal services so that I could make it a little harder for my users if they try and bypass my web site.
To change the default RDP port number:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ Control\Terminal Server\WinStations\RDP-Tcp set the value to the HEX of whatever port you want, for example: 10cc is port 4300
I hope you will find it useful!