Hello,
I have a situation where I need to setup a PPTP VPN tunnel through double-NAT. See the diagram for details. Note: The IP addresses used in the diagram are not the actual IP addresses used in the live network.
On the remote site I have a Tomato router setup with PPTP. This is setup behind a residential gateway and it recieves a dynamic public IP from the ISP.
At the main office we have an ASA 5505 (base model) with a static public IP assigned to the outside interface. The inside interface of the ASA is configured with a NAT'ed IP address and is connected to a Tomato router just like the one on the remote site. The Tomato router is setup with NAT on the inside interface(s), effectively turning this into a double-NAT scenario.
My question is how do I configure the ASA so that the two Tomato routers can have PPTP connectivity?
Thanks,
Austin
