Re: Are you an IOS NAT expert?

Hi Dale,

I used TCP/IP book, and VOL 1 ver 5.0

in Ver 5.0 u will find a lot of examples :)

Good luck

On Mon, May 18, 2009 at 12:43 PM, Dale Shaw <dale.shaw_at_gmail.com> wrote:

> Hi all,
>
> I really dislike IOS NAT. Reeeaaallly dislike it. I cut my teeth on
> NAT on Linux and BSD and it just seems to make so much more sense to
> me on those systems.
>
> The "inside local", "inside global", "outside local" and "outside
> global" concepts -- why, Cisco? Whhhhhy? And it's just as
> brain-destroying on PIX/ASA, if you ask me.
>
> Anyway, I could whinge and moan about Cisco's implementation all day
> long, but that's not going to help. Essentially, I'd like to become
> much better at identifying and applying solutions to NAT scenarios
> with IOS.
>
> I've been setting up NAT on routers for years, and in the end, I can
> always make it work. For trickier configurations, sure, it takes
> longer, but I get there. As we all know, though, there's no time for
> trial and error in the exam room. I want to be able to look at a NAT
> task and immediately know which interface(s) should be 'inside' and
> which interface(s) should be 'outside', which of the many NAT
> configuration options will get the job done, and what "gotchyas" each
> method comes packaged with (e.g. when static routes are required).
>
> Don't get me wrong, I understand how a packet can be transformed by a
> NAT, it's really just gaining a deeper understanding of Cisco's
> implementation.
>
> So, I guess I'm happy to hear what study material helped you really
> 'get' NAT - DocCD links, other Cisco.com articles, books, workbooks,
> whatever - but I'm more interested in the way you approach NAT tasks
> in terms of logic, strategy and troubleshooting. I personally haven't
> found a resource yet that gives me the background theory I require to
> get the most out of practice labs.
>
> cheers,
> Dale
>
>
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Salah
CCIE# 24207
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