set CONN_NAME=MY_VPN_CONNECTION_NAME

set RDP_SERVR=123.456.78.90
set RDP_DOMAIN=MYDOMAIN
set RDP_LOGIN=USER
set RDP_PASSW=PASSWORD


if defined RDP_DOMAIN (
    if not RDP_DOMAIN=="" (
        set RDP_USER=%RDP_DOMAIN%\%RDP_LOGIN%
    ) else (
        set RDP_USER=%RDP_LOGIN%
    )
) else (
    set RDP_USER=%RDP_LOGIN%
)


rasdial %CONN_NAME%

cmdkey /generic:%RDP_SERVR% /user:%RDP_USER% /pass:%RDP_PASSW%

mstsc /f /v:%RDP_SERVR%