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Re: Software router state of the art

  • From: Wes Young
  • Date: Wed Jul 23 15:05:41 2008
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 <[email protected]> wrote:
The Endace DAG cards claim they can move 7 gbps over a PCI-X bus from
the 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 at
building a commodity SNORT solution, and wondering if a powerful network
card will help, or would the bottleneck be in processing the packets and
overhead 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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