Snort mailing list archives

Re: Unexpected results with reputation preprocessor


From: James Lay <jlay () slave-tothe-box net>
Date: Wed, 19 Mar 2014 14:12:07 -0600

On 2014-03-19 13:22, Dave Corsello wrote:
Thanks Joel and James.  The problem is that according to my maillog 
the
preprocessor did its job--the inbound traffic never made it to my
server, so there was no outbound response traffic.  It looks to me 
like
for each inbound packet that the preprocessor reports, it's also
reporting a second, non-existent packet with all of the same
information, including timestamp, except that the source and 
destination
addresses are reversed.  I also see this at a client location where I
recently upgraded to 2.9.6.0 and turned on the reputation 
preprocessor.
In that case, assuming that the inbound traffic was successfully
blocked, the preprocessor seems to be reporting a non-existent 
outbound
HTTP packet for each blocked inbound packet.


Are you logging to unified?  Would be interesting to see the output of 
that offlist perhaps if it's sensitive.

James


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