Snort mailing list archives
Re: Snort as Gigabit Sensor
From: Phil Wood <cpw () lanl gov>
Date: Thu, 31 Jul 2003 20:30:05 -0600
What is wrong with running multiple snorts with multiple conf files on either the same or different interface(s). I do it all the time. The aggregate packet loss is usually less because of bpf filters which limit what gets passed (via libpcap) to each snort process. I believe in mucho memory, gige interfaces, ringbuffered pcap, dual or more NGigHz processors, and Snort running on Linux. %^) Later, On Thu, Jul 31, 2003 at 02:51:10PM -0500, Frank Knobbe wrote:
On Thu, 2003-07-31 at 11:21, Chris Green wrote:That gave the detection engine the threading capabilty of snort1 -c snort1.conf -i eth0 & snort2 -c snort1.conf -i eth1 & snort3 -c snort1.conf -i eth2 & The latter process is more flexible and just as good as snort doing that spin for you.Yup, especially since you can use different rule sets for different interfaces. Let me ask you this then... is the pcap loop buffered? Does libpcap buffer packets itself (internally being multi-threaded)? If not, having at least the acquisition separated and buffered should help Snort not to drop packets when it is busy logging to the database. The answer may be in the FAQ... I'll take a penalty drink for not looking there! But since we're discussing it..... Frank
-- Phil Wood, cpw () lanl gov ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ 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:
- RE: Snort as Gigabit Sensor, (continued)
- RE: Snort as Gigabit Sensor Hutchinson, Andrew (Jul 25)
- RE: Snort as Gigabit Sensor Kreimendahl, Chad J (Jul 25)
- RE: Snort as Gigabit Sensor Kreimendahl, Chad J (Jul 29)
- Re: Snort as Gigabit Sensor Chris Green (Jul 31)
- Re: Snort as Gigabit Sensor Frank Knobbe (Jul 31)
- Re: Snort as Gigabit Sensor Chris Green (Jul 31)
- Re: Snort as Gigabit Sensor Frank Knobbe (Jul 31)
- Re: Snort as Gigabit Sensor Chris Green (Jul 31)
- Re: Snort as Gigabit Sensor Frank Knobbe (Jul 31)
- Re: Snort as Gigabit Sensor Chris Green (Jul 31)
- Re: Snort as Gigabit Sensor Chris Green (Jul 31)
- Re: Snort as Gigabit Sensor Phil Wood (Jul 31)