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RE: [inbox] Re: Re: E-Mail viruses
From: "Hunter, Laura E." <hunter () sfs upenn edu>
Date: Fri, 5 Mar 2004 16:34:59 -0500

To paraphrase Werner von Braun, always use the word 'never' with the utmost
caution.  :-)


-----Original Message-----
From: Curt Purdy [mailto:purdy () tecman com] 
Sent: Friday, March 05, 2004 3:20 PM
To: Valdis.Kletnieks () vt edu
Cc: 'Full Disclosure'
Subject: RE: [inbox] Re: [Full-disclosure] Re: E-Mail viruses 


Valdis.Kletnieks wrote:

Ah, I wish...  An alternative is to allow only a
proprietary extension
through, like .inc  Legitimate senders would rename the
file, be it .exe
.doc .jpg, indicate in the body of the message what the
true extension is,
and the receiver merely renames it.

So let's see.. the same bozos who read the text part of the virus, get 
the password, and use that to unzip the rest of the virus won't read 
the text part, get the rename to do,
and.....

Color me dubious....

Methinks you misunderstand.  Only the proprietary extension, i.e. .inc or
.xyz or .whatever, would be allowed through, and since virus writers would
never use this extension, it would eliminate ALL viruses at the gateway. The
nice thing about this approach is that it completely eliminates the need for
any anti-virus on the mail server since all virus attachments are
automatically dropped without the need for scanning.  Quite a simple, yet
elegant solution, if I do say so myself.

Curt Purdy CISSP, GSEC, MCSE+I, CNE, CCDA
Information Security Engineer
DP Solutions

----------------------------------------

If you spend more on coffee than on IT security, you will be hacked. What's
more, you deserve to be hacked.
-- White House cybersecurity adviser Richard Clarke

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Full-Disclosure - We believe in it.
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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html


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