You can only connect a WinGate VPN server to a WinGate VPN server.
The WinGate Internet Client is an application for LAN clients to connect to a WinGate server, it is not for use with the WinGate VPN.
What you have to do is set up the WinGate VPN host server to host a VPN, then set up a remote WinGate VPN machine to connect to the host server.
Any LAN clients behind these servers can connect through the WinGate servers to reach the other side of the VPN.
If you've got your WinGate VPN server set up and you want to see how it works then you can join our test server. Just download the configuration file
here and copy it into WinGate. The login credentials are:
Username: test
Password: 1234