filtering file types vs. extensions

Peter Peters P.G.M.Peters at CIV.UTWENTE.NL
Tue Jun 10 07:41:49 IST 2003

On Fri, 6 Jun 2003 19:14:51 -0300, you wrote:

>Example: I get a file called "funny-picture.jpg" that actually has a DOS
>executable in it, it would be allowed by an explicit rule in
>filename.rules.conf, but later forbidden by an explicit rule in
>mime-type.rules.conf, and thus it would be replaced by a message that says
>"funny-picture.jpg seems to be an application/octet-stream type. This type is
>considered dangerous".

Most Microsoft files I see in attachments are of type
application/octet-stream. Even the (more) innocent ones. So deciding on
this alone would be a problem.

Peter Peters, senior netwerkbeheerder
Dienst Informatietechnologie, Bibliotheek en Educatie (ITBE)
Universiteit Twente,  Postbus 217,  7500 AE  Enschede
telefoon: 053 - 489 2301, fax: 053 - 489 2383,

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