RE : Basic snort setup for processing pcap produces no alerts

[rmkml <rmkml () yahoo fr>]

Hi Egon,

Could you check if you disable cksum verification please? ( -k none )

Another check if you have enabled no ethernet (don't remember exactly what name) on configure option please? ( New on 
v2.9.6.0)

Regards
@Rmkml



-------- Message d'origine --------
De : Egon Kidmose <kidmose () gmail com> 
Date :  
A : snort-users () lists sourceforge net 
Objet : [Snort-users] Basic snort setup for processing pcap produces no alerts 
 
Hi all, 

I am working with snort for the first time, trying to feed in a pcap with known bad traffic and hoping to get out a 
list of alerts.

I use snortrules-snapshot-2960.tar.gz from http://snort.org/snort-rules/ without pulledpork as I don't need to get 
updates. 
My pcap contains a trace from a controlled environment where I have infected and remote controlled a machine with the 
fairly old irc bot sdbot, so I expect some reaction from snort, however I get none. 

My thought is that the absence of alerts follows from one of the following:
a) incorrect configuration
b) my trace not being "bad enough" for snort to pick it up
c) or something else...

Is there anyone out there who can help me to fix the configuration, point me to some reference trace that certainly 
triggers an alert or simply provide possibly useful hints/suggestions/insights?
Anything would be greatly appreciated!





# command used: 
 ~/git-reps/.../sdbot05b-2014-03-25-1020 $ snort -c ../rules/snortrules-snapshot-2960/etc/snort.conf -r sdbot05b.pcap
# output from running snort
http://kom.aau.dk/~ekidmose/snort-example/output.txt 
# snort version:
 ~/git-reps/.../sdbot05b-2014-03-25-1020 $ snort -V

   ,,_     -*> Snort! <*-
  o"  )~   Version 2.9.6.0 GRE (Build 47) 
   ''''    By Martin Roesch & The Snort Team: http://www.snort.org/snort/snort-team
           Copyright (C) 2014 Cisco and/or its affiliates. All rights reserved.
           Copyright (C) 1998-2013 Sourcefire, Inc., et al.
           Using libpcap version 1.3.0
           Using PCRE version: 8.31 2012-07-06
           Using ZLIB version: 1.2.7
# My pcap and the rules with my modifications
http://kom.aau.dk/~ekidmose/snort-example.tar.gz
http://kom.aau.dk/~ekidmose/snort-example/




Mvh/BR
Egon Kidmose

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