Snort mailing list archives
Re: Snort as Gigabit Sensor
From: Jeff <jcoppock1 () comcast net>
Date: Thu, 24 Jul 2003 15:27:21 -0700
Banniza Robert, 2003-Jul-24 13:43 -0500:
Anyone have any good pointers on tuning Linux (Redhat 9) as a gigabit sensor? Currently, we are using a Broadcom Corporation NetXtreme BCM5703 Gigabit Ethernet (TG3 kernel module) Netgear card as the sniffing card. We have set up a span port so that we can see all traffic on a Cisco 6509. The sad thing is we are encountering 40% packet loss. The network interfaces were statically compiled into the kernel and /etc/sysctl.conf was modified with the following to provide larger buffers:
<snip> Some other posts to this thread talk about getting the max performance out of a single system, up to 300-500Mbps. To get a full Gig (well 700Mbps or so anyway) of IDS traffic you'll need to load balance a server farm. Check out the Nortel Alteon Web Switches which have IDS Load Balancing. You can configure multiple IDS groups, each group is a farm of servers. The load balancing will balance the load by session, sending each server different packets but keeping the packets from the same session on the same server. jc -- Jeff Coppock Systems Engineer Diggin' Debian Admin and User ------------------------------------------------------- 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:
- Snort as Gigabit Sensor Banniza Robert (Jul 24)
- Re: Snort as Gigabit Sensor Erek Adams (Jul 24)
- Re: Snort as Gigabit Sensor Demetri Mouratis (Jul 24)
- Re: Snort as Gigabit Sensor twig les (Jul 24)
- Re: Snort as Gigabit Sensor Bennett Todd (Jul 24)
- Re: Snort as Gigabit Sensor Jeff (Jul 24)
- Re: Snort as Gigabit Sensor Jason Haar (Jul 24)
- Re: Snort as Gigabit Sensor Jeff (Jul 26)
- DCOM exploit snort signature jason (Jul 27)
- Re: Snort as Gigabit Sensor Jason Haar (Jul 24)
- Snort in Linux kernel mode Paul B. Poh (Aug 05)
- <Possible follow-ups>
- RE: Snort as Gigabit Sensor Banniza Robert (Jul 24)
- RE: Snort as Gigabit Sensor twig les (Jul 24)
- Re: Snort as Gigabit Sensor Irwan Hadi (Jul 27)
- Re: Snort as Gigabit Sensor Marc Quibell (Jul 24)
- RE: Snort as Gigabit Sensor Banniza Robert (Jul 24)
- RE: Snort as Gigabit Sensor Hutchinson, Andrew (Jul 25)