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I have a cisco3640 with 2 fastethernet cards in
it,(data flows directly through the router).

I want to map a single internal ip to an external ip.

What is the most simple way of doing this?

NAT is what you will need to use to map an internal address to an
external. You will need to config something like this:

ip nat inside source static <inside ip> <outside ip>
!
int e1/0 (internal interface)
ip nat inside
!
int e0/0 (external interface)
ip nat outside

Here are the docs on NAT:
http://www.cisco.com/univercd/cc/td/....htm#wp1042290

Let us know if you need more help

-Russ
CCIE #9473 (Security/R&S), CISSP


Captain <> wrote in message news:<>. ..
> I have a cisco3640 with 2 fastethernet cards in
> it,(data flows directly through the router).
>
> I want to map a single internal ip to an external ip.
>
> What is the most simple way of doing this?