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Network Security Snort-Users
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Re: [Snort-users] Snort performance

Subject: Re: [Snort-users] Snort performance
Date: Tue, 29 Mar 2005 12:40:04 +0200
I agree - our last test on open source Snort was actually on 2.x (on
standard off-the-shelf server-class hardware), not 1.8 - my apologies

And yes, we DID find that 2.x was MUCH faster than 1.x  ;o)

Bob


On 29/3/05 12:25 pm, "Milani Paolo" <Paolo.Milani@TILAB.COM> wrote:


Unfortunately results for Snort 1.8 are unreliable since post 2.0 versions are
MUCH faster (that's when the whole multi-pattern-matching algorithms thing
came in).

Results for Sourcefire IS3000 are not directly applicable to Snort because, as
you mention in your report, the Sourcefire sensor uses a custom packet capture
driver instead of pcap library. A custom driver gives MAJOR performance
increase, results for vanilla snort are not going to be anywhere near that
good.

my 2 cents,
Paolo Milani

Subject: Re: [Snort-users] Snort performance
From: Bob Walder <bwalder@spamcop.net>
To: Ramkumar Chinchani <rc27@cse.Buffalo.EDU>,
Snort-Users Mailing List <snort-users@lists.sourceforge.net>

We looked at open source Snort some time ago (back in the V1.8 days) and
that appears in one of our earlier reports.

However, our latest Gigabit IDS report includes detailed performance tests
of the Sourcefire IS3000 which is, of course, based on Snort
(www.nss.co.uk/gigabitids).

Bob Walder
The NSS Group



On 25/3/05 11:33 pm, "Ramkumar Chinchani" <rc27@cse.Buffalo.EDU> wrote:

Hi all,

I am looking for references/pointers to any documented measurements on
Snort's performance overheads, latency and such.

Thanks,

_R



Gruppo Telecom Italia - Direzione e coordinamento di Telecom Italia S.p.A.

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