Setting up Site-to-Site VPN and nat on IOS

[mbroberson1]

I have a senario I am looking to setup. I have a Cisco 3825 router that handles roughly 50 site-to-site VPN's. I have a particular VPN where I would like to nat (actually overload) off an interface for a specific VPN site-to-site tunnel. I know when you are doing nat you of course have an inside and an outside interface which I do on the router but how would you overload (pat) on an interface for just a specific VPN tunnel? Say you wanted to overload your entire internal supernet to a single private (RFC 1918) interface addess? Typically the outside interface (nat outside) what you would overload off of has a public ip address, but in this case you want to use a private RFC 1918 address as the source of the overload interface?

Any help is appreciated.

[Mohammad Alhyari]

hi ,

did you think of using a normal statment and use a route map with that statment that only permit the VPN traffic to be natted using that statment and deny any other translation , and for the crypto access-list you should use the source as the pattted ip address and the destination as the the remote proxies .

regards.