Name/IP: Name or public IP address of the network;
Port: The port of the VPN server. The default for SSL is 1194;
Protocol: The transport protocol used in the communication. TCP is more reliable buy will add an extra overhead;
VPN Network: The IP network which will be given to the clients. When a user connects to this vpn server, he will get an IP address in this IP network. This network should be different from any other IP network in the company;
Domain: The domain offered to the clients;
DNS Servers: The DNS server passed to the clients;
NetBios Servers: The netbios server passed to the clients;
Routes for clients: Sets all the networks that client must have access through the tunnel.
NOTE: If you want to use a VPN SSL and use the same email client with the internal mail server configurations, you need to add the VPN Network to the Relay networks definitions at the Email option;