I just bought a router 851 and have problems to create a VPN. The WAN interface get an IP address from my provider's DHCP server. I use NAT and Access List.
Do I need an additional IP address, a static one, on my WAN interface to make it work? I don't believe so but it's the answer I got.
Does anybody has a sample config file showing how to configure the router to support DHCP on the WAN, NAT access list, PPTP VPN?