Great Circle Associates Firewalls
(September 1995)

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Subject: Re: Mail
From: "Johnson-Bryden, Ian" <IJB @ saicuk . co . uk>
Date: Tue, 26 Sep 95 15:19:00 GMT
To: "'smtp:firewalls @ greatcircle . com'" <firewalls @ greatcircle . com>
Encoding: 44 TEXT


There is a packaged system which was developed for government use as a
Commercial Off The Shelf product which is probably exactly what you are
looking for. It was designed for what looks like a very similar set of
requirements to protect sensitive and classified private networks from open
public networks like Internet, X.25 and ISDN. As a standard supported
package, it could offer a high level of strength at a reasonable price and
be fully supported through its life cycle.

You could try emailing cowboy @
 access .
 digex .
 net for information. That might
not be the best contact point but if it isnt I'm sure he will put you in
touch with the right person.

Ian J-B
From: firewalls-owner
To: firewalls
Subject: Mail
Date: Monday, September 25, 1995 9:57AM

Mail concerns:

I need assistance in determining an effective mail solution for the
 following environment.

Several companies will be linked to a customer (secure) network to do
various contract related tasks. This connectivity will be via T1 links
where communication will be between firewalls (at each location) to the
secure network firewall. Users will not be allowed to have simultaneous
(multiple) sessions while attached to the secure environment. This
includes (Internet, and mail from anywhere other than within the secure

Users want to send/receive mail from within the secure environment but
customer doesn't want to allow (mail) from external sources(internet,
etc;) in the secure network because of security holes with most mail
Can anyone provide any suggestions on how we can setup a mail soultion
that the customer might feel is secure enough that would not contaminate
the secure environment? Thanks.Dee Veasey, Loral Space Information Systems.

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