Great Circle Associates Firewalls
(October 1997)
 

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Subject: Content Vector Protocol - was Re: Keyword filtering of email through firewall
From: John Lines <John . Lines @ aeat . co . uk>
Date: Fri, 10 Oct 1997 16:07:50 +0100
To: "Davis, Rob" <rdavis @ lucentncg . com>
Cc: firewalls @ greatcircle . com, "Galvin, Dean" <dgalvin @ lucentncg . com>
In-reply-to: Your message of "Thu, 09 Oct 1997 11:03:19 CDT." <c=US%a=_%p=Lucent_Technolog%l=NCG1-971009160319Z-583 @ ncg1 . lucentncg . com>

Rob Davis wrote:

> This is tangentially related to firewalls, so I apologize in advance.
> If anyone knows of a more appropriate venue for this, please let me
> know.
> 
> I have a multi-national customer with approximately 200 sites that will
> soon be connected with a WAN and additionally have Internet access
> through some yet to be determined firewall.
> 
> They would like a mechanism that would allow them to detect
> incoming/outgoing Internet mail that did not meet "company policies".
> This could be sexual content, frivilous material, trade secrets, etc.
> The obvious places to check are the firewall and mail server(s).
> 
> I realize that there are still a million ways to get the info out and
> it's probably a bad idea, but I'm curious about potential commercial or
> custom-built applications and the price.
> 
TIS Gauntlet 4.0 (and some other firewalls - I believe) support something 
called
Content Vectoring Protocol (CVP) - which I have not really looked into yet. It
allows you to pass email messages, or attachments, or web pages to a CVP
server running on your internal network. From the documentation this can
then scan for viruses, or for undesireable content.

I dont know if  CVP is documented anywhere - you may be able use
a firewall which supports it, and write or buy in a scanning engine which 
would meet the company policy.



	John Lines




References:
Indexed By Date Previous: Re: DNS on the Firewall - security problem
From: Adam Shostack <adam @ homeport . org>
Next: To Gauntlet or not to Gauntlet
From: "Messano, Jim" <jim . messano @ lmco . com>
Indexed By Thread Previous: RE: Keyword filtering of email through firewall
From: "Davis, Rob" <rdavis @ lucentncg . com>
Next: Re:RE: Keyword filtering of email through firewall
From: mbeech @ csc . ragroup . co . uk

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