CMD查看3389端口:
REG query HKLM\SYSTEM\CurrentControlSet\Control\Terminal" "Server\WinStations\RDP-Tcp /v PortNumber
CMD开启3389端口:
REG ADD HKLM\SYSTEM\CurrentControlSet\Control\Terminal" "Server /v fDenyTSConnections /t REG_DWORD /d 0 /f