I have a customer with a small home LAN with a Win2000 Server running MS Proxy Service accessing the Internet via DSL. The Win2000 Server is also setup as a VPN client to tunnel into a corporate network running Microsoft PPTP. Both of these mechanisms work correctly by themselves but as soon as you establish a VPN session from the Win2000 Server into the corporate network, it cuts off the Proxy client access to the Internet. I have looked for documentation from Microsoft on this issue but can’t seem to come up with anything(surprise!). Does anyone know why this happens? It’s almost as if the VPN session monopolizes the entire Internet connection bandwidth because as soon as the session ends, proxy clients are able to access the Internet again.
