Snort mailing list archives
Re: Multiple Snort instances processing Pcap files
From: Y M <snort () outlook com>
Date: Thu, 30 May 2013 00:50:32 +0300
I just reread your original post. What does your syslog say? Is there a requirement to run multiple instances of snort? Would using --pcap-dir=your/pcap/directory instead of -r be more sufficient? --pcap-dir would read pcap files in the directory you choose. In this case, one instance will be able to read all pcap files stored in the given directory. ________________________________ From: Y M<mailto:snort () outlook com> Sent: 5/30/2013 12:26 AM To: Parker, Jonathan E.<mailto:jep () g-c-i net>; Shawn Lee<mailto:dashawn () gmail com> Cc: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net> Subject: Re: [Snort-users] Multiple Snort instances processing Pcap files What exactly happens as the number of instances increases? Does Snort process(s) terminate unexpectedly? Or do you get inconsistent readings? ________________________________ From: Parker, Jonathan E.<mailto:jep () g-c-i net> Sent: 5/30/2013 12:02 AM To: Shawn Lee<mailto:dashawn () gmail com> Cc: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net> Subject: Re: [Snort-users] Multiple Snort instances processing Pcap files Hey, thanks for the reply. - Snort 2.9.4.5 - No definitive number of processes where failing starts that I can determine. It seems to have more trouble the more instances I run. - My snort.conf file is fairly large and I don't have a quick way to get it to my "internets" workstation. But pcaps are processed just fine with my snort.conf if I process one file at a time. Could there be something that becomes an issue re: snort.conf if one runs multiple instances. I saw another reply that maybe it is a threading issue - I didn't know Snort was single threaded - just started using it. Perhaps that is my issue. Thanks - Jon ________________________________ From: Shawn Lee [dashawn () gmail com] Sent: Wednesday, May 29, 2013 4:39 PM To: Parker, Jonathan E. Cc: snort-users () lists sourceforge net Subject: Re: [Snort-users] Multiple Snort instances processing Pcap files What version of snort? Is there a number or processes in parallel that it starts failing at? What is your snort config? On Wed, May 29, 2013 at 10:53 AM, Parker, Jonathan E. <jep () g-c-i net<mailto:jep () g-c-i net>> wrote: I've developed a script (CentOS) to process .pcap files as they arrive in a directory. It starts an instance of Snort to process the file (snort -y -r <pcap file> -c snort.conf -l <a unique directory for the given .pcap>). I'm having occasional issues when multiple instances of Snort are running at the same time, the processing terminates for some files with the message "Error during Snort processing". If I process the file w/o other instances of Snort running, it works fine. It seems to get worse (more failures) the more instances of Snort I have running at once. Any ideas on what might be causing this issue? Thanks - Jon ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net<mailto: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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1
_______________________________________________ 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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1
_______________________________________________ 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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1
_______________________________________________ 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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
Current thread:
- Multiple Snort instances processing Pcap files Parker, Jonathan E. (May 29)
- Re: Multiple Snort instances processing Pcap files Shawn Lee (May 29)
- Re: Multiple Snort instances processing Pcap files Josh Bitto (May 29)
- Re: Multiple Snort instances processing Pcap files Parker, Jonathan E. (May 29)
- Re: Multiple Snort instances processing Pcap files Livio Ricciulli (May 29)
- Re: Multiple Snort instances processing Pcap files beenph (May 29)
- Re: Multiple Snort instances processing Pcap files Parker, Jonathan E. (Jun 03)
- Re: Multiple Snort instances processing Pcap files Shawn Lee (May 29)
- <Possible follow-ups>
- Re: Multiple Snort instances processing Pcap files Y M (May 29)
- Re: Multiple Snort instances processing Pcap files Y M (May 29)