RE: NATs as firewalls

[David Morris <dwm at xpasc.com>]

On Thu, 8 Mar 2007, Darryl (Dassa) Lynch wrote:

> Hallam-Baker, Phillip wrote:
> >>> From: John C Klensin [mailto:john-ietf at jck.com]
> >>
> >> There is a major difference between a NAT box plugged into
> >> the real Internet and a NAT box plugged into another NAT
> >> box. It is a pretty ugly one for the residential user.
>
> I'm afraid it is already happening on a large scale in some parts.  Here in
> Australia I've seen multiple ISP's who NAT all residential customers.  Some
> of them amongst the largest players in the market.  Even some commercial
> offerings are on NATs.
>
I've also encountered a local ISP who is using a NAT between their network
and the 'world'. So there is at least one US based ISP who has adopted
this approach.

Dave Morris

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