Great Circle Associates Firewalls
(June 1994)
 

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Subject: pcroute and or a hacked pcbridge
From: Jonathon Tidswell (MS Research Fellow) <t-jont @ microsoft . com>
Date: Wed, 22 Jun 94 14:00:31 TZ
To: firewalls @ GreatCircle . COM

I'm looking at establishing a secure firewall for a 128K link, which 
would allow
certain outgoing connections but would disallow incoming requests for services.
The services I would like to provide include most things accessible to Mosaic.
Though I will leave the issue of securing particular services and the 
clients to a
later date, and [attempt to] avoid enabling insecure services.

I may be being overly paranoid, but I really want to put an additional filter
on the outside of the firewall.

I have a limited budget and the current idea is for a dual homed firewall with
proxies for outgoing services and an old PC running pcroute or a hacked
pcbridge as an external filter.
While I would like an internal filter as well, unless I can dual use 
the external filter
I doubt the budget will stretch to it,

All (well meaning) comments appreciated ?

thanks
JonT

Disclaimer: I am a PhD student on a scholarship and not an employee of 
Microsoft,
I can't speak for Microsoft.

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