Re: NAT order of operations, why different?

From: Tom Kacprzynski <tom.kac_at_gmail.com>
Date: Tue, 4 Jan 2011 17:58:04 -0600

That makes a lot of sense. Thank you very much for responding.

On Tue, Jan 4, 2011 at 5:49 PM, dtw <dimas.tunggul_at_gmail.com> wrote:

> Hi there,
>
> This is what I understand about NAT, please correct
>
> the idea is for the NAT Inside we have to know where's the packet is wish
> to go by looking up in the routing table; after that the NAT process take a
> place regarding the destination. In -> Out does routing looking before NAT
> translation lookup.
>
> For the NAT Outside the router needs to know what's is the real destination
> before do an IP Lookup in it's routing table. Out -> In does NAT translation
> lookup before routing looking.
>
> But if we'r using 'nat enable' the process will be the same...there's no
> more Outside/Inside NAT
>
>
>
> --
> dtw
> Sent with Sparrow <http://www.sparrowmailapp.com>
>
> On Wednesday, January 5, 2011 at 7:40 AM, Tom Kacprzynski wrote:
>
> Hello,
> Just trying to figure out why they would make the order of operations of
> NAT
> different based on the direction where
> In -> Out does routing looking before NAT translation lookup.
> Out -> In does NAT translation lookup before routing looking.
>
> Thank you in advance.
>
>
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Received on Tue Jan 04 2011 - 17:58:04 ART

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