How to set up a VPN remote access server on window server 2012
The VPN server should be configured with two network interfaces;
one internal and one external. This configuration allows for a better
security posture, as the external network interface can have a more restrictive firewall profile than the internal interface. A server with two network interfaces requires special attention to the network configuration. Only the external network interface is configured with a default gateway. Without a default gateway on the internal network interface, static routes will have to be configured on the server to allow communication to any remote internal subnets.
Configure Remote Access
Open the Routing and Remote Access management console. Right-click the VPN server and choose Configure and Enable Routing and Remote Access.
Configure and enable Routing and Remote Access.Click Next, choose the Remote access (dial-up or VPN) option, and click Next.Choose Remote access (dial-up or VPN).Choose VPN and click Next.Choose VPN. Select the network interface that is Internet-facing. In addition, select the option to Enable security on the selected interface by setting up static packet filters and click Next.Select the Internet-facing network interface.Choose automatic IP address assignment for remote clients.Use Routing and Remote Access to authenticate connection requests.
Review the configuration and click Finish.
windows server 2012