Great Circle Associates Firewalls
(March 1996)
 

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Subject: Re: Handling IP addressing conflicts with cascaded proxies
From: Paul Ferguson <pferguso @ cisco . com>
Date: Wed, 27 Mar 1996 00:44:26 -0500
To: jsanchez @ esegi . es (Julio Sanchez)
Cc: gmv-gw-lists-firewalls @ gmv . es

At 11:01 AM 3/25/96 GMT, Julio Sanchez wrote:

>
>Sorry, you are missing the point. The addresses are in conflict.
>If you have taken network 193.127.51.0/24 for your network, how, please
>tell, will your hosts ever going to talk to my WWW server? How can
>NAT help when your packets will never leave your network? They will
>never be seen by the NAT device. We are not talking RFC 1597/1918 here.
>

Although I've forgotten what the original thread encompassed, I think
you are misrepresenting my point.

You can really use any arbitrary network address internally, whether
RFc-1918 or not, and with the use of a NAT device at the perimeter,
there are no conflicting addresses. This does not, however, preclude
the need for a valid, and unique, network address which is announced
to the remainder of the Internet community.

- paul

--
Paul Ferguson                                           ||        ||
Consulting Engineering                                  ||        ||
Reston, Virginia   USA                                 ||||      ||||
tel: +1.703.716.9538                               ..:||||||:..:||||||:..
e-mail: pferguso @
 cisco .
 com                         c i s c o S y s t e m s


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From: jsanchez @ esegi . es (Julio Sanchez)
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