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Re: mh (RE: OMB: IPv6 by June 2008)

  • From: Jay R. Ashworth
  • Date: Fri Jul 08 14:11:27 2005

On Fri, Jul 08, 2005 at 01:15:42PM -0400, David Andersen wrote:
> On Jul 8, 2005, at 12:49 PM, Jay R. Ashworth wrote:
> > On Thu, Jul 07, 2005 at 01:31:57PM -0700, Crist Clark wrote:
> >> And if you still want "the protection of NAT," any stateful firewall
> >> will do it.
> >
> > That seems a common viewpoint.
> >
> > I believe the very existence of the Ping Of Death rebuts it.
> >
> > A machine behind a NAT box simply is not visible to the outside world,
> > except for the protocols you tunnel to it, if any.   This *has* to
> > vastly reduce it's attack exposure.
> 
> Not really.  Consider the logic in a NAT box:
[ ... ]
> and the logic in a stateful firewall:

Sorry.  Given my other-end-of-the-telescope perspective, I was
envisioning an *on-machine* firewall, rather than a box.  Clearly *any*
sort of box in the middle helps in the fashion I alluded to, whether it
NATs or not.

Cheers,
-- jra
-- 
Jay R. Ashworth                                                [email protected]
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