Recently, my department was able to free up a new server that we decided to use
to replace our old snort box. I figured that this would be a good time to
update to 2.6. I saved a few of the old config files and went to work with the
new box from scratch. I loaded RHELAS 4 and after the install, I downloaded
and installed 2.6.0.2, and Barnyard 0.2.0. I then checked and copied over the
config files, rulesets, and startup scripts from our old snort 2.4 box and I
thought I pounded out any issues with file locations and permissions. Both
snort and barnyard are now starting and running, however I let it run last
night, outputting unified files and having barnyard pointed at a remote syslog
server, and I didn't have a single rule in the remote syslog today.
I had snort make a fast alert output to be sure that rules were being
triggered, and sure enough they are, which leaves me with barnyard. I did the
fast alert for this too and it didn't even create the file for it. This is
the first time I've tried to use the barnyard startup script. before I would
just start it with <barnyard -D -n -f /var/log/snort/snort.alert>
Now that I'm trying to use the script, the command is </usr/local/bin/barnyard
-c /etc/snort/barnyard.conf -d /var/log/snort -a /var/log/snort-proces....>
obviously, if I try to start it the old way I now get a segmentation fault.
I have posted the barnyard script as well as what I use in the barnyard.conf
Any help I can get is appreciated. Also if it helps, I don't absolutely have
to use the barnyard script, so if there is an idea the excludes it, I would
appreciate that as much as any help.
Thanks in advance,
Derek
The barnyard script I used is this:
#!/bin/bash
#
# barnyard Start/Stop barnyard daemon
#
# Written by Alejandro Flores <alejandrorfloresgmail.com>
#
# chkconfig: 2345 42 62
# description: Output spool reader for Snort! This program decouples
#output overhead from # the Snort network intrusion detection system
#and allows Snort to run at full speed. It takes #input and output
#plugins and can therefore be used to convert almost any spooled fil
#
. /etc/rc.d/init.d/functions
# Barnyard binary
# Executavel do barnyard
BARNYARD=/usr/local/bin/barnyard
# Where to place processed logs
# Diretorio onde vãficar os logs járocessados
PROCESSADOS=/var/log/snort-processados
# Base dir for snort logs
# Diretó base dos logs do snort
LOG_BASE=/var/log/snort
# Unified log filename
# Nome do arquivo de log unified
LOG_FILE=snort.log
# Barnyard config
# Configuraç do barnyard
CONFIG=/etc/snort/barnyard.conf
# where is sid-msg.map
# Localizaç do arquivo sid-msg.map
SIDMAP=/etc/snort/sid-msg.map
# where is gen-msg.map
# Localizaç do arquivo gen-msg.map
GENMAP=/etc/snort/gen-msg.map
# where is classification.config
# Localizaç do arquivo classification.config
CLASSCONF=/etc/snort/classification.config
# where to place the barnyard bookmark
# Localizaç do bookmark do barnyard
WALDO=/var/log/snort/waldo
case "$1" in
start)
if [ -f /var/lock/subsys/barnyard ]; then
echo "Barnyard is already running."
exit
fi
echo -n "Starting Barnyard: "
daemon $BARNYARD \
-c $CONFIG \
-d $LOG_BASE \
-a $PROCESSADOS \
-f $LOG_FILE \
-w $WALDO \
-s $SIDMAP \
-g $GENMAP \
-p $CLASSCONF \
-D
touch /var/lock/subsys/barnyard
;;
stop)
echo -n "Stopping Barnyard"
killproc barnyard
rm /var/lock/subsys/barnyard
/script
This is my barnyard.conf <some commented parts omitted>
#-------------------------------------------------------------
# http://www.snort.org Barnyard 0.1.0 configuration file
# Contact: snort-barnyard@lists.sourceforge.net
#-------------------------------------------------------------
# $Id: barnyard.conf,v 1.9 2004/05/01 16:43:29 andrewbaker Exp $
########################################################
# Currently you want to do two things in here: turn on
# available data processors and turn on output plugins.
# The data processors (dp's) and output plugin's (op's)
# automatically associate with each other by type and
# are automatically selected at run time depending on
# the type of file you try to load.
########################################################
# Step 1: configuration declarations
# To keep from having a commandline that uses every letter in the alphabet
# most configuration options are set here
# enable daemon mode
config daemon
#INSERTED BY DEREK. Indicate which interface shall be monitored
config interface: eth1
#INSERTED BY DEREK. Give Barnyad the information location of Meta-data.
config sid-msg-map: /etc/snort/sid-msg.map
config gen-msg-map: /etc/snort/gen-msg.map
config class-file: /etc/snort/classification.config
# set the hostname (currently only used for the acid db output plugin)
#COMMENTED OUT BY DEREK. config hostname: snorthost
# set the interface name (currently only used for the acid db output plugin)
#COMMENTED OUT BY DEREK. config interface: fxp0
# set the filter (currently only used for the acid db output plugin)
#COMMENTED OUT BY DEREK. config filter: not port 22
# Step 2: setup the output plugins
# alert_fast
#-----------------------------
# Converts data from the dp_alert plugin into an approximation of Snort's
# "fast alert" mode. Argument: <filename>
output alert_fast: barnyard.alert
# log_dump
#-----------------------------
# Converts data from the dp_log plugin into an approximation of Snort's
# "ASCII packet dump" mode. Argument: <filename>
#COMMENTED OUT BY DEREK. output log_dump
# alert_syslog2
#-------------------------------
# Generates a syslog alert. This supports considerably more features than
# the original syslog output plugin.
#
output alert_syslog2: severity: ALERT; syslog_host: x.x.x.x;
/barnyard.config
«««««««««««««««««««»»»»»»»»»»»»»»»»»»»
Derek Stinchfield
Network Analyst
Scientific Computing Center
University of North Dakota - ÆROSPACE
derek@aero.und.edu
«««««««««««««««««««»»»»»»»»»»»»»»»»»»»
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