and Bellovin in his previous e-mail in this thread said " we were able to
track down was in some email that I sent in, I believe, 1987. The first
occurrence in print was by Spafford, in 1991."
Marty G.
On Wed, 27 Aug 1997 Don_Tompkins @
esd .
tracor .
com wrote:
> 'Firewalls' as Bellovin and others have written about in some fine
> texts are boundary or barrier devices (multilevel) and more akin to
> classic network gateways that permit or deny traffic based on some set
> of rules. At a primitive level, classic routers performed some gateway
> functions. Modern routers provide more sophisticated capability and
> work well in conjunction with firewalls. Network protection or
> recovery could be included in gateway functions (valuable in packet
> networks) but I don;t think of them as primary functions.
>
> ______________________________ Reply Separator _________________________________
> Subject: Historic firewall definition
> Author: "Bruce K. Marshall" <bkmarsh @
feist .
com> at ESD
> Date: 8/26/97 10:22 PM
>
>
> I was recently browsing through the 1992 copyrighted edition
> of_Interconnections: Bridges and Routers_ by Radia Perlman when I
> stumbled upon an interesting definition of a firewall. Radia writes:
>
> "With most networks, malfunctions can cause widespread disruption.
> Some networks, however, are designed with ''firewalls.'' If a network
> is partitioned into pieces by firewalls, a disruption will spread only
> as far as a firewall and will therefore affect only a portion of the
> network."
>
> So, my curiosity was perked into wondering whether firewalls
> originally filled this purpose before they became more orientated to
> protecting networks or whether this was simply a competing definition.
> Any definitive answers or good guesses?
>
> In a general sense though, I would think that this definition isn't
> truly in conflict with what we call "firewalls" today seeing as how
> security incidents can be easily classified as disruptions. These days,
> I think we could probably even get away with classifying most of the
> Internet as a disruption..
>
> --
> ___________________________________________________________________
> Bruce K. Marshall, CISSP - bkmarsh @
feist .
com - Feist Communications
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> "Specialists in using today's advanced communications technology
> to ensure the future of your business."
>
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