Re: Disable sid vs. Suppress

["Jefferson, Shawn" <Shawn.Jefferson () bcferries com>]

Yes, but that entails changing the rule, doesn't it? (could be wrong)  I'd rather not touch the rules as they come from 
VRT and ET, so I have been using suppression for these.



From: Dave Venman [mailto:dvenman () sourcefire com]
Sent: Wednesday, September 21, 2011 9:25 PM
To: Lay, James
Cc: Jefferson, Shawn; snort-users () lists sourceforge net
Subject: Re: [Snort-users] Disable sid vs. Suppress

Rather than suppression, the "noalert" option in the flowbits portion of the rule can do that for you, i.e. it allows a 
rule which does detection purely to set a flowbit state (for example the flowbit client_hello in some of the ssl rules, 
which is used later when the SSL session being inspected is more advanced in its setup ) to *not* generate an event.
On 21 September 2011 20:39, Lay, James <james.lay () wincofoods com<mailto:james.lay () wincofoods com>> wrote:

From: Jefferson, Shawn [mailto:Shawn.Jefferson () bcferries com<mailto:Shawn.Jefferson () bcferries com>]
Sent: Wednesday, September 21, 2011 11:34 AM
To: Lay, James; snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>
Subject: RE: Disable sid vs. Suppress

Some rules will set flowbits for others rules to fire on, so those ones
will have to be suppressed instead of disabled (Pulled Pork nicely
re-enables these flowbit setting rules for you.)



Thanks Shawn...didn't know that :)

James

------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1
_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net<mailto:Snort-users () lists sourceforge net>
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!



--
Dave Venman, CISSP
Security Engineer Manager, Sourcefire EMEA
Email:   dave.venman () sourcefire com<mailto:dave.venman () sourcefire com>
Mobile: +44 (7917) 168068
DDI:     +44 (118) 989 8412
Fax:     +44 (118) 989 8401



------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1

_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!