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Re: [Snort-users] ignore bad rule on startup

Subject: Re: [Snort-users] ignore bad rule on startup
Date: Wed, 19 Jul 2006 12:21:33 -0500
kakomon wrote:
Thank you for your answer Paul
however i'm asking if there is an option, an argument, a switch or
something, to make snort skip eventual garbage during startup

There is not.

i've seen snort refusing to start due a 'fwsam' directive in some
bleedingedge rules, like the file 'bleeding-dshield-BLOCK.rules'

or, for example, if it finds two rules with the same SID

i'll like to know if the behaviour could be to simply skip those rules

No, because snort can't make those decisions for you. If you had two duplicate SIDs, which should be disabled?

this would provide me to auto-download the rules,
maybe with oinkmaster

now it's not possible because if a new rules update could breaks snort,
it will not startup anymore

think about the disaster if snort is inline:
all the traffic would be waiting in queue !

You shouldn't be automating rule updates on an inline setup anyway. Rules should be applied to a test box, vetted, and then deployed to the production box when you're certain no disruption will occur.

--
Paul Schmehl (pauls@utdallas.edu)
Adjunct Information Security Officer
The University of Texas at Dallas
http://www.utdallas.edu/ir/security/

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