ipsec vpn with nat overlap
Posted on 2014-09-08
I have a situation where I need to NAT my end of a VPN tunnel because the folks on the other end of the tunnel already have a tunnel to a network with the same IP scheme as my local network. So their local network is 172.16.254.0 and mine is 192.168.1.0. They have set up their tunnel to use 192.168.101.0 as the remote network. So I have been racking my brain how to do NAT translation for any thing to and from the tunnel. By the way my router is a Cisco 1812 and the examples I found on the internet don't seem to apply to the IOS I have, which is c181x-advipservicesk9-mz.124-24.T5.
I found one reference that says the command " ip nat source static <networkobject> <networkobject> destination static <networkobject> " Have setup the three network objects, one for remote network, one for local network and one for the local mapped network (192.168.101.0). I do not get the opportunity to enter the "destination static" part.
Hopefully someone has some tips as I have three more locations where this needs to be done.