Snort mailing list archives
Performance and rule tuning
From: "Jefferson, Shawn" <Shawn.Jefferson () bcferries com>
Date: Tue, 2 Dec 2008 10:36:31 -0700
Hi, I have a couple of questions about performance and rule tuning. Performance: I'm seeing quite a bit of dropped packets on one of my sensors. Traffic is about 30-60 Mb/s. From the reading I've done, it seems like the first thing is to make sure your variables are set in snort.conf, and probably the next is to move to mmaped pcap. I've attempted to do both of these, however, I was wondering if snort is actually using the mmapped pcap or not. Is there any way to tell? I did the following: - apt-get remove libpcap-dev - built the mmapped pcap - rebuilt snort - put PCAP_FRAMES=32768 in my script file that starts snort There aren't many "how-to" articles out there for doing this, and I hope I did everything right. Rule Tuning: Is the optimal way of tuning out false positives using suppress rules in threshold.conf ? I am using oinkmaster to download new rules each day, so I'm assuming that commenting out rules won't work. Thanks! Shawn
------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________ 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
Current thread:
- Performance and rule tuning Jefferson, Shawn (Dec 02)
- Re: Performance and rule tuning (linux) Phil Wood (Dec 02)
- <Possible follow-ups>
- Re: Performance and rule tuning Nathaniel Richmond (Dec 02)
- Re: Performance and rule tuning Jefferson, Shawn (Dec 02)
- Re: Performance and rule tuning Jefferson, Shawn (Dec 03)
- Re: Performance and rule tuning Matt Jonkman (Dec 03)
- Re: Performance and rule tuning Joel Esler (Dec 03)
- Re: Performance and rule tuning Jefferson, Shawn (Dec 04)
- Re: Performance and rule tuning Joel Esler (Dec 04)
- Re: Performance and rule tuning Todd Wease (Dec 04)
- Re: Performance and rule tuning Jefferson, Shawn (Dec 02)