VPN connection to extend to the entire local network?

Question

VPN

There is a server in one city
There is a client in another
Computer connects, but how to make one computer connected to VPN, and through the second network card you can connect, for example, an ip phone and a couple of computers through a switch, so that they can already ping vpn ip addresses

Answer 1

Put the router in front of the computer, set up a vpn client connection, and then do at least a whole grid, there would be a route)

Answer 2

Not enough data. Where to connect, what OS, etc. Generally in Windows it is possible to share network cards - smoke settings. Well, or put a router ...