We have PPoE WAN connection to Local City Network where local traffic is cheap, but Internet traffic is expensive. In order to overcome this – people created VPN Gateway to Internet (Formely ISA Server 2006) which supports VPN PPTP/IPSEC L2TP Connections.
So we connect to the Internet in two stages. First PPoE WAN connection, then VPN connection to VPN Server on WAN Network (using remote network default gateway). So all traffic actually “routed” through VPN Server.
Could someone tell us – Is it possible to achive this using ZeroShell?