Can I change the default port 3389 used for Windows XP Remote Desktop?
Yes! Microsoft has instructions located here. Some ISP’s or firewalls may block the default port 3389, and changing the port may be a successful workaround. Basic Summary Below: Run regedit Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber Modify the decimal value of the portnumber and reboot the computer. When connecting to this computer with a different port number you will need to manually specify the port. If you are going through a SSL tunnel instead of localhost:3389 you would use localhost:portnumber. If connecting using Remote Desktop directly you would connect as yourhomeip:portnumber.