Snort mailing list archives
Re: Question
From: Martin Holste <mcholste () gmail com>
Date: Mon, 25 Jul 2011 12:30:46 -0500
Good info. I am running in AC. For now I am running without the buffers. I'll take the packet loss over having snort stop running. I guess I will reevaluate my rule set to get that trimmed up.....until snort can multi thread....God I can't wait until that.
Good news! Even though Snort itself is single threaded, PF_RING has software load-balancing capabilities which will allow you to run it as if it were multi-threaded. Here's the glossed-over version of the howto: 1. Get PF_RING with the snort daq included svn co https://svn.ntop.org/svn/ntop/trunk/PF_RING/ 2. Compile the daq (assuming PF_RING installed to /opt/PF_RING) ./configure --with-pic --with-libpcap-includes=/opt/PF_RING/include CFLAGS=-lpthread -lpfring -lpcap -D_GNU_SOURCE && make && make install 3. Add the following to your snort.conf: config daq: pfring config daq_dir: /usr/local/lib/daq config daq_var: clusterid=44 (this can be any number < 255) 4. Start snort with a shell script wrapper like this (assuming you have 8 CPU's and you are sniffing eth2): #!/bin/sh for COUNTER in 0 1 2 3 4 5 6 7; do mkdir /tmp/snort$COUNTER kill $(cat /tmp/snort$COUNTER/snort_eth2.pid) sleep 5; /usr/local/snort/bin/snort -c /etc/snort/snort.conf --pid-path=/tmp/snort$COUNTER -l /tmp/snort$COUNTER --daq-var bindcpu=$COUNTER -D & done 5. Profit ------------------------------------------------------------------------------ Storage Efficiency Calculator This modeling tool is based on patent-pending intellectual property that has been used successfully in hundreds of IBM storage optimization engage- ments, worldwide. Store less, Store more with what you own, Move data to the right place. Try It Now! http://www.accelacomm.com/jaw/sfnl/114/51427378/ _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users Please see http://www.snort.org/docs for documentation
Current thread:
- Question Gibson, Nathan J. (HSC) (Jul 18)
- Re: Question Martin Holste (Jul 18)
- Re: Question Gibson, Nathan J. (HSC) (Jul 18)
- Re: Question Martin Holste (Jul 18)
- Re: Question Gibson, Nathan J. (HSC) (Jul 21)
- Re: Question Martin Holste (Jul 21)
- Re: Question Gibson, Nathan J. (HSC) (Jul 22)
- Re: Question Martin Holste (Jul 22)
- Re: Question Gibson, Nathan J. (HSC) (Jul 25)
- Re: Question Martin Holste (Jul 25)
- Re: Question Will Metcalf (Jul 25)
- Re: Question Gibson, Nathan J. (HSC) (Jul 18)
- Re: Question Martin Holste (Jul 18)