Networking/Tunneling

        client.lan
    10.0.0.2
    |
    |- 10.0.0.x/
    |
    10.0.0.1 VPN Endpoint 
        server.example.com
    192.168.0.10
    |
    |- 192.168.0.x
    |
    192.168.0.1
        Firewall/Gateway
    12.34.56.78
    |
    (( Internet ))