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Re: Best practices for very high volume install..
From: "Jefferson, Shawn" <Shawn.Jefferson () bcferries com>
Date: Tue, 21 Dec 2010 11:54:16 -0700

That's what I have found as well... snort+barnyard2, and tune the ruleset.  Don't use the ET rules (or if you do, 
tune/prune them aggressively).  On my network, I use network taps with two sensors, and run the ET ruleset on the tap 
that connects my network to the Internet only (bandwidth is considerably lower than on my corporate WAN links-on which 
I use only the Snort VRT ruleset).

I'm not pushing as much data through as you are... I've seen spikes up around 400 Mb/s with no drops though, and this 
is somewhat older hardware.

-----Original Message-----
From: Joel Esler [mailto:jesler () sourcefire com] 
Sent: Monday, December 20, 2010 5:02 PM
To: Castle, Shane
Cc: <snort-users () lists sourceforge net>
Subject: Re: [Snort-users] Best practices for very high volume install..

Using unified2 and barnyard2 removes the output logging slowdown from Snort. It can go very very fast.  

Most of the speed can be found in reducing ruleset and tuning. 


Sent from my iPhone

On Dec 20, 2010, at 6:27 PM, "Castle, Shane" <scastle () bouldercounty org> wrote:

Using Barnyard? The claim is that with Barnyard2 a 10G link can be
supported.

-- 
Shane Castle
Data Security Mgr, Boulder County IT
CISSP GSEC GCIH

-----Original Message-----
From: Wil Schultz [mailto:wschultz () bsdboy com] 
Sent: Monday, December 20, 2010 14:25
To: snort-users () lists sourceforge net
Subject: [Snort-users] Best practices for very high volume install..

Hey there, have a very high traffic install (snort 2.9/barnyard2) that
I'm trying to get into a good and usable position. 

At this point I've got a gig port that's saturated to the box so we're
going to do a 2g port-channel here in a bit.

So far I've come to the conclusion that mysql binary logging isn't
realistic, so it's been turned off.

Additionally I've got a script that runs at midnight to purge alerts
that are greater than 2 days old.

I'm considering putting the database into RAM for a little more speed.

Does anyone else have some other best practice type suggestions for a
very high traffic box?

-wil
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