I have a router which acts as VPN gateway for remote users. The VPN gateway run as PPTP server and its a hardware box. ie. Dlink router. When two remote users from Single WAN IP address tries to connect to VPN gateway unable to connect. Sometimes it disconnects the other person vpn connectivity too.
Here is the configuration:
Remote office: 192.168.0.X/24
Home network: 172.18.16.X/24
Using MS-VPN client am trying to connect to the router.