Intrusion Detection Systems mailing list archives

Re: IDS engines put this together


From: bradipo () xmission com (Andy Bradford)
Date: Tue, 13 Jun 2000 21:03:53 -0600


Archive: http://msgs.securepoint.com/ids
FAQ: http://www.ticm.com/kb/faq/idsfaq.html
IDS: http://www-rnks.informatik.tu-cottbus.de/~sobirey/ids.html
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Thus said "Marcus J. Ranum" on Mon, 12 Jun 2000 14:13:04 EDT:

You can have an NFR generate an alert if there are more
than a certain number of RCPT:s for a message. But I
think it'll be hard to come up with a perfect algorithm
for determining spam from desirable bulk mailings. That's
the real trick. We have all the other pieces of the puzzle
except that one.

There is always the tarpit solution... :-)  After a determined number 
of RCPT TO: are received it starts taking forever to return the ACK for 
each one.  (not really an ACK, but you know what I mean).

Andy

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