Great Circle Associates Firewalls
(April 1998)
 

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Subject: Re: Unwanted data appears inside firewalled network
From: Larry Kwiat <Larry . Kwiat @ gov . yk . ca>
Date: Mon, 06 Apr 1998 08:36:55 -0700
To: "Ryan Russell" <ryanr @ sybase . com>, "Stout, William" <StoutW @ pioneer-standard . com>
Cc: "'Firewalls @ GreatCircle . COM'" <Firewalls @ GreatCircle . COM>

At 04:05 PM 4/3/98 -0800, Ryan Russell wrote:
>No, layer 8 is economics, and layer 9 is politics.  Since
>OSI layers rely on the lower layers, it's not possible to
>build an intelligence layer on top of that.
>
>                    Ryan
------------------------------------
>We're mentally confined to this completely artificial layer model.
>Crackers aren't.  We could build an AI system on the perimeter wall to
>add intelligence on the firewall.  Or we could build a network-wide
>management system (tied into firewalls, virus scanners, & IDS probes) to
>create a 'ceiling' across the perimeter walls.
>
>Bill  Stout


...right. But I think they really are the first two layers, upon which 
all else depends. Solid decision making.

You've got to come in "under the wire" with these two, before anything
of little unforeseen consequence is possible. Ask any engineer.

I agree we all too often ignore them.
Sincerely,

Larry Kwiat
Security Coordinator
Government of Yukon
Larry .
 Kwiat @
 gov .
 yk .
 ca
Phone: (867) 667-8081


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