Full Disclosure mailing list archives

RE: Re: Filtering sobig with postfix


From: "Bojan Zdrnja" <Bojan.Zdrnja () LSS hr>
Date: Thu, 21 Aug 2003 22:30:07 +1200



-----Original Message-----
From: Craig Pratt [mailto:craig () strong-box net] 
Sent: Thursday, 21 August 2003 5:52 p.m.
To: Bojan.Zdrnja () LSS hr
Cc: full-disclosure () lists netsys com
Subject: Re: [Full-disclosure] Re: Filtering sobig with postfix

You'd better check for a lot more than just .pif files. .scr and .exe 
files are critical as well.

Of course, the list is much longer, but original question was about stopping
Sobig-F, which sends itself only as a .pif file.

If you want to really filter stuff, look at something like MailScanner 
(http://www.mailscanner.info) which has file-type/mime-type 
checking as 
just the first line of defense. The power and configurability of this 
system is amazing. It works with postfix and sendmail, and lots of 
virus scanners - if you choose to integrate one.

For combination with postfix, I'd suggest amavisd-new. It has very good
performance, includes spamassassin for spam filtering and works really nice.

Regards,

Bojan Zdrnja

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