I've never had to can before over a VPN, I've been lucky I guess that both sides don't use the same IP range in the past. However, now I need NAT as the remote network is using a range we have. Users use servers on each side of the VPN and we use a ASA 5520 my side the other side is managed by another company and the VPN/Firewall is very basic (not sure of the make).
My network range is 192.168.0.0/16
Remote Network is 10.20.30.0/24 and various 192.168.x.x/24 addresses.
My network only need to reach the 10.20.30.x/24 range as that is where their servers are.
The remote network need to contact servers on my network on the 192.168.21.x/24 and 192.168.20.x/24 and 192.168.100.x/24 range. I was wondering if it is possible NAT our range(192.168.x.x/16) to 172.19.20./24 and then NAT our servers to these ranges for the remote office to connect to?
I just don't know where to satrt on this? I guess my phase to of the VPN will have to stay at SA 10.20.30.x/24 and theirs will have to be 172.19.20.x/24 so the tunnel comes up, then some sort of NAT from the 172.19,20.x range to our servers?