Re: Inconsistency in NAT logic?

From: Luca Hall (lhall@setnine.com)
Date: Fri Aug 08 2008 - 11:07:25 ART


read it like:

anyone whos inside destination matches listX use pool poolY

and normal

anyone whos inside source matches X use pool|interface|etc

the inside and outside are relative to the operation

----- Original Message -----
From: Matt Bentley <mattdbentley@gmail.com>
To: GS CCIE-Lab <ccielab@groupstudy.com>
Sent: Fri, 8 Aug 2008 09:56:43 -0400 (EDT)
Subject: Inconsistency in NAT logic?

Hi GS:

I obviously must be thinking wrong, but can't get my head around this one.
I thought I understand the mechanics of NAT, but that is obviously not the
case.

Here is what I thought:
ip nat inside destination [listX] pool [POOL1]

Any packet that hits the inside interface address with a destination address
specified by LISTX is translated to an IP address in POOL1 and forwarded out
the outside interface.

As in SLB w/ NAT, the outside interface is the one receiving the packets,
and the inside address is the one connected to the devices you are load
balancing to.

I have looked on Cisco documentation, but as usual am finding that their
explanations tell me nothing more than what I could deduce grammatically.

Thanks in advance!

Blogs and organic groups at http://www.ccie.net



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