nanog mailing list archives
Re: Software router state of the art
From: Wes Young <wcyoung () buffalo edu>
Date: Wed, 23 Jul 2008 15:05:30 -0400
We use them here and there (the 1Gig versions). The biggest thing to think about is the types of rule-sets you'll be using compounded by the number of flows being created / expired. Once tuned, they work quite well, but the balance is how fast you can pull/analyze out of RAM. Compiling the rules down to the card's level speeds things up a bit, but at the loss of using more dynamic rulesets.
If you can get the raw data to some sort of larger medium (say, rotating pcaps on a disk), you length the buffer-window. FWIW however, probably the best way to scale this is get an Xport fiber regen tap, populate with a few of these, tune them to monitor different segments based on address space or port ranges. You'll have yourself a relatively cheap solution, but extremely effective solution.
I've yet to test out the NinjaProbes... It's on my todo list... On Jul 23, 2008, at 2:21 PM, Christopher Morrow wrote:
On Wed, Jul 23, 2008 at 11:05 AM, Naveen Nathan <naveen () calpop com> wrote:The Endace DAG cards claim they can move 7 gbps over a PCI-X bus fromthe NIC to main DRAM. They claim a full 10gbps on a PCIE bus.I wonder, has anyone heard of this used for IDS? I've been looking atbuilding a commodity SNORT solution, and wondering if a powerful network card will help, or would the bottleneck be in processing the packets andoverhead from the OS?http://www.endace.com/our-products/ninja-appliances/NinjaProbe-NIDS snort at 1g & 10g -chris
-- Wes Young Network Security Analyst CIT - University at Buffalo http://claimid.com/saxjazman9
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Current thread:
- Re: Software router state of the art, (continued)
- Re: Software router state of the art Seth Mattinen (Jul 28)
- Re: Software router state of the art Rev. Jeffrey Paul (Jul 28)
- Re: Software router state of the art Andrew D Kirch (Jul 28)
- Re: Software router state of the art Seth Mattinen (Jul 28)
- Re: Software router state of the art Joe Greco (Jul 28)
- Re: Software router state of the art Bill Nash (Jul 28)
- Re: Software router state of the art Florian Weimer (Jul 28)
- Re: Software router state of the art Naveen Nathan (Jul 23)
- Re: Software router state of the art Christopher Morrow (Jul 23)
- Re: Software router state of the art Wes Young (Jul 23)