Re: Simple Nat question

From: Sadiq Yakasai <sadiqtanko_at_gmail.com>
Date: Wed, 8 Dec 2010 16:48:06 +0000

Or:

debug ip icmp
debug ip nat

That should show you something...

On Wed, Dec 8, 2010 at 3:12 PM, Tyson Scott <tscott_at_ipexpert.com> wrote:

> While you are sending the traffic simply do "show ip nat translations" on
> B.
> If your configuration is correct then you will see the NAT translation
> entries.
>
>
>
> Regards,
>
>
>
> Tyson Scott - CCIE #13513 R&S, Security, and SP
>
> Managing Partner / Sr. Instructor - IPexpert, Inc.
>
> Mailto: <mailto:tscott_at_ipexpert.com> tscott_at_ipexpert.com
>
>
>
>
>
> From: Naufal Jamal [mailto:naufalccie_at_yahoo.in]
> Sent: Wednesday, December 08, 2010 10:10 AM
> To: Tyson Scott
> Cc: ccielab_at_groupstudy.com
> Subject: RE: Simple Nat question
>
>
>
>
> Hi Tyson,
>
> My aim is to see... If I can see the Nat translation happen in B for icmp
> traffic even icmp is blocked in A. ..The config below is correct that you
> sent. its similar to like that only..
>
> --- On Wed, 8/12/10, Tyson Scott <tscott_at_ipexpert.com> wrote:
>
>
> From: Tyson Scott <tscott_at_ipexpert.com>
> Subject: RE: Simple Nat question
> To: "'Naufal Jamal'" <naufalccie_at_yahoo.in>, ccielab_at_groupstudy.com
> Date: Wednesday, 8 December, 2010, 1:55 PM
>
> What's up with so many messages being marked as spam recently on here?
>
> If you are blocking the ICMP on A from the NAT why are you trying to test
> the ping? Are you wanting to get this to work? If so please give more
> information
>
> On B I am presuming you have something similar to the following.
>
> C Local IP 10.10.10.10
> NAT'ed 3.3.3.3
>
> B Configuration
> int f0/0 (towards C)
> ip nat inside
> int f0/1 (towards A)
> ip nat outside
>
> ip nat inside source static 10.10.10.10 3.3.3.3
>
> Providing configurations will greatly reduce the back and forth on here.
>
> Regards,
>
> Tyson Scott - CCIE #13513 R&S, Security, and SP
> Managing Partner / Sr. Instructor - IPexpert, Inc.
> Mailto: tscott_at_ipexpert.com
>
>
> -----Original Message-----
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> Naufal Jamal
> Sent: Wednesday, December 08, 2010 2:14 AM
> To: ccielab_at_groupstudy.com
> Subject: Simple Nat question
>
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> Content preview: Hi All, I have 3 router connected like A->B->C. One of
> the
> interfaces of C is trying to ping a server connected to A. I am doing a
> Nat
> in B which translate the source ip of C into a nat subnet which is routed
> between A and B. [...]
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> From: Naufal Jamal <naufalccie_at_yahoo.in>
> Subject: Simple Nat question
> To: ccielab_at_groupstudy.com
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> Hi All,
>
> I have 3 router connected like A->B->C. One of the interfaces of C is
> trying
> to ping a server connected to A. I am doing a Nat in B which translate the
> source ip of C into a nat subnet which is routed between A and B.
>
> Now C is doing a continuous ping to the server at A. But the icmp is
> blocked
> in A from C.
>
> In such a case should i be seeing any translations in B. Since I am not
> getting any icmp reply on C?
>
> Please clarify
>
>
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-- 
CCIEx2 (R&S|Sec) #19963
Blogs and organic groups at http://www.ccie.net
Received on Wed Dec 08 2010 - 16:48:06 ART

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