Great Circle Associates Firewalls
(April 1995)
 

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Subject: Re: Registered IP vs unregistered
From: Dave Crocker <dcrocker @ networking . stanford . edu>
Date: Sun, 9 Apr 1995 14:46:23 -0700
To: Bob Beck <beck @ cs . ualberta . ca>
Cc: firewalls @ GreatCircle . COM

At 11:35 AM 4/9/95, Bob Beck wrote:
>Dave Crocker Says:
>> used only when there is no alternative.  The long-term impact of private
>> addresses can be very unpleasant.
>
>        "unpleasant"?  well, I have to ask, what do you mean by that?

        The best response is to suggest you read RFC 1627.  That's where we
tried to do a thorough job of detailing the problems.

        The simplistic (or, ummmmmm, concise) summary is that private
addresses often end up needing to be public and this, then, requires
re-numbering.  With current technology, renumbering varies between somewhat
painful to very painful.

        Let me repeat the bottom line:  just because you think the numbers
are going to stay private, they often don't.

d/

--------------------
Dave Crocker
Brandenburg Consulting                                  +1 408 246 8253
675 Spruce Dr.                                    fax:  +1 408 249 6205
Sunnyvale, CA  94086                   dcrocker @
 networking .
 stanford .
 edu




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