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Re: Service providers that NAT their whole network?

daemon@ATHENA.MIT.EDU (Jay R. Ashworth)
Fri Apr 15 17:35:36 2005

Date: Fri, 15 Apr 2005 17:35:06 -0400
From: "Jay R. Ashworth" <jra@baylink.com>
To: nanog@merit.edu
In-Reply-To: <Pine.LNX.4.60.0504151338380.15720@twomix.devolution.com>; from Scott Call <scall@devolution.com> on Fri, Apr 15, 2005 at 01:40:12PM -0700
Errors-To: owner-nanog@merit.edu


On Fri, Apr 15, 2005 at 01:40:12PM -0700, Scott Call wrote:
> On Fri, 15 Apr 2005, Philip Matthews wrote:
> > A number of IETF documents(*) state that there are some service providers
> > that place a NAT box in front of their entire network, so all their
> > customers get private addresses rather than public address.
> > It is often stated that these are primarily cable-based providers.
> 
> In my experience many cellular providers (at least in the US) do this as 
> well.  A GPRS connection to Cingular, even from a laptop device, will get 
> a 1918 address. I don't mind since my phone runs linux with no root 
> password (thanks motorola).

Must depend on the service.  My CDPD and the 1X-RTT that replaced it,
both from Verizontal, had public addresses, though they grew incoming
filters around the Code Red days...

Cheers,
-- jra
-- 
Jay R. Ashworth                                                jra@baylink.com
Designer                          Baylink                             RFC 2100
Ashworth & Associates        The Things I Think                        '87 e24
St Petersburg FL USA      http://baylink.pitas.com             +1 727 647 1274

      If you can read this... thank a system administrator.  Or two.  --me

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