But in case you missed the link on that confusing page - you change the
listening port for RDC by editing the registry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber
Once in the port number, click on 'decimal' and change the port to whatever
you like.
I use values above 60000. Once changed, re-boot your machine so the change
takes effect.
To connect - you must add the port number to the address... ie.
123.456.789.12:60001
or
mymachine.homeserver.net:60001
Dave