You are the administrator for a network that runs Windows Small Business Server (SBS) 2011 Standard. The network gateway device does not support UPnP functionality. You enable VPN for the users. When users try to connect by using VPN, they receive an error message that indicates that the server cannot be reached. You need to ensure that the users can connect to the network by using VPN. What should you do?

A.
In the Windows Small Business Server 2011 Standard Console, run the Fix My Network Wizard.

B.
In the Windows Small Business Server 2011 Standard Console, run the Connect to the Internet Wizard.

C.
On the network gateway device, allow TCP port 1701. Forward TCP port 1701 to the Windows SBS 2011 Standard server.

D.
On the network gateway device, allow TCP port 1723. Forward TCP port 1723 to the Windows SBS 2011 Standard server.