Outgoing VPN PPTP: How to check if TCP port 1723 and GRE protocol port 47 are blocked or not in Wind
A couple things to point out. 1723 TCP Microsoft Point-to-Point Tunneling Protocol (PPTP) This works in conjunction with your GRE port 47. It should be active no matter what. Also try the following: 1) Make sure the Include Windows logon domain check box ...