NAT on Internet gateway router

[richmorrow624]

I have two VPN concentrators that I want to put behind an Internet gateway router.

I want to NAT the concentrator's public interface from a private address to a public address on the router.

Can I just configure the routers interfaces for the NATing?

My question is, does the router have to have an address of it's own for any reason or can I configure the router to just NAT the two private addresses to public addresses for the concentrators?

concentrator->router->internet

[Richard Burts · Accepted solution]

Richard

I feel like there must be something in your question that I have missed. The obvious answer is that yes the router must have addresses of its own. It must have an IP address on the Internet facing interface to be able to communicate with the outside world. And the router must have an IP address on the interface connecting to the concentrators to be able to communicate with the concentrators.

You should be able to do a static NAT definition for the concentrators on the router (assuming that you have appropriate IP address space available in public addresses).

If I have missed something please help me understand so I can answer better.

HTH

Rick

[richmorrow624]

Thanks for the reply,

No you didn't miss anything, that was it.

I was thinking more along the lines of the router being a pass through I guess.

Configuring two outside interfaces on the router and having them be the connection point to the concentrators via the NATed addresses.

I see I have to use an address for the router and two additonal addresses for the concentrators.

Thanks