I've been asked to configure a Cisco router to one of our partners using a method I'm unfamiliar with. Hence I'm hoping someone from here can guide me in the right direction. Essentially the set up needs to be like this:
At one end there is a firewall with an IP address of 220.127.116.11 (all fake IP's). This is to be the VPN termination point. Behind this firewall is a server with a private IP address of 172.16.1.1. This private IP is NAT'd to 18.104.22.168.
Now at the other end is a VPN router with an IP address of 22.214.171.124. This is the other VPN termination point. There is another internal server with IP address of 10.0.0.1. I don't really want to create an external NAT for this internal IP address if possible.
Essentially I need to get 172.16.1.1 and 10.0.0.1 to communicate with each other over a VPN but NOT use their IP addresses in the VPN tunnel.
What is the best way to achieve this? Any help would be much appreciated!