[Esd-l] filter bypass HOW?

[Chris Payne]

I have been filtering a lot of common file(mime) types
just as a general rule to prevent the spread of viruses,
and it works.

We know that there are legitimate reasons to send 
DLL or self-extracting EXE files between the tech
people, so we ask them to use PKZIP or WINZIP
to package the file(s) so that they do pass through
the sanitizer. 

Of course, the other 400 users in my dept aren't
very savvy and wouldn't bother to learn how to
ZIP files, which saves our bacon  :)

- Chris Payne

On Thu, 27 Sep 2001 06:20:14 -0500, Sergio Cesar wrote:

>What do I need to do to feed a message quarantined in the quarantine
>directory back to the recipient? I tried to just copy the message to the
>users mailbox but when received it comes as a .txt attachment and the user
>calls to tell me he gets garbage. :(
>
>How can a users of Outlook send an ".dll" attachment that would bypass the
>sanitizer if it is setup with the X-Security: sanitizer bypass  <pw> ???
>
>
>Thanks
>
>Sergio
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>Esd-l mailing list
>Esd-l at spconnect.com
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>


- - 

Chris Payne 
Network Administrator
Physical Resources Dept, 
University of Guelph
(519)824-4120  x2882
cpayne at pr.uoguelph.ca