[c-nsp] NAT on one interface

[Church, Charles]

Yeah, it's possible to policy route the traffic to a loopback that has
nat inside configured on it, and then out the normal interface.  It's
kludgy, but it'll work, I think.


Chuck 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Michael Malitsky
Sent: Wednesday, August 22, 2007 3:12 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] NAT on one interface

Hello,

I am trying to figure out if it's possible to configure NAT in IOS on
just one interface.  Specifically, say I need to translate traffic flows
between X.X.X.X and Y.Y.Y.Y.  Y.Y.Y.Y is reachable through one
interface, that's my gateway to the "other" network.  However, X.X.X.X
can be reached through multiple interfaces.  Normal NAT configuration
requires me to specify a "nat inside" and a "nat outside" interfaces.  I
can certainly specify the gateway interface to Y.Y.Y.Y as "nat outside",
but I don't want to set a bunch of other interfaces as "nat inside" (nor
do I want to involve them in NAT processing at all).  Is there any other
way?

Thanks,
Michael Malitsky
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