Re: [SAFE] Addressing nested NAT issues for STUN control

Philip Matthews <philip_matthews@magma.ca> Wed, 31 October 2007 12:36 UTC

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From: Philip Matthews <philip_matthews@magma.ca>
Subject: Re: [SAFE] Addressing nested NAT issues for STUN control
Date: Wed, 31 Oct 2007 08:36:47 -0400
To: Magnus Westerlund <magnus.westerlund@ericsson.com>
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On 26-Oct-07, at 04:07 , Magnus Westerlund wrote:

>
> I am worried that NATs that hand out overlapping addresses will be
> fairly common. Most home NATs or modems seem to use 192.168.1.1/26 as
> default range to hand out and those will easily be nested.

I think this is a hard question to answer without solid experimental  
evidence.

(As antidotal evidence, my home Internet access is through four levels
of NAT -- two in my house and two from my ISP, and I (at least) did  
nothing
to avoid IP address overlap.)

- Philip


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