Re: !!Rolling back Snort rule files!!

[waldo kitty <wkitty42 () windstream net>]

On 10/29/2010 13:24, Miso Patel wrote:
> Today we installed the newest VRT community rules on our Snort sensors.  Almost
> immediately we started seeing increased alert volume and further investigation
> shows that these are all false positives. We see *tons* of events for the
> Microsoft Kodak imaging malformed tiff rules along with other alerts like
> Mozilla firefox image dragging exploit and more.

i saw some of this when i moved up to 2.8.6.1 with a more complete compile than 
we were using previously... i disabled ot suppressed those rules because of the 
higher number alerts that were apparently FPs...

> Right now the SIEM is swamped and I've made the decision to go back to the old
> rules ... is there an easy way to do this?  I don't see them online and my
> engineers tell me that there is not an option in Snort to instruct it to use the
> previous ruleset (e.g. snort --use-prev).  Any help is much appreciated.

i'm sure you have a workable answer to this by now but you'd basically have to 
wipe out your current rules sets and then update them using the previous snort 
version's version number... this would be done in your rules sets updater tool, 
whatever that may be...

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