[Snort-users] alert suppression

Joel Esler jesler at ...1935...
Wed May 6 16:33:30 EDT 2009


You can grep, for the word "tag".
Like I said, there is only one VRT rule that has it turned on, otherwise the
alerts are probably coming from pseudo packets out of some preprocessor.  If
you running a ruleset from other rule repositories, there are lots of rules
with "tag" in the Emerging-Threats rules.

J

On Wed, May 6, 2009 at 4:28 PM, Jefferson, Shawn <
Shawn.Jefferson at ...14448...> wrote:

>  Hi,
>
>
>
>    1. I’m not sure.  I didn’t even know that this alert could be triggered
>    by a rule instead of the pre-processor.  How would I figure out which
>    rule(s) may be triggering the taq: tagged packet alert?  What’s the purpose
>    of this alert?
>
>
>
>    1. I’ll take another look at the readme for the dcerpc2 preprocessor.
>    Maybe I can set some alert suppression for these in the threshold.conf file
>    instead…
>
>
>
> Thanks for your help,
>
> Shawn
>
>
>  ------------------------------
>
> *From:* Joel Esler [mailto:jesler at ...1935...]
> *Sent:* May 05, 2009 4:39 PM
> *To:* Jefferson, Shawn
> *Cc:* snort-users at lists.sourceforge.net
> *Subject:* Re: [Snort-users] alert suppression
>
>
>
> What alert is generating the tag alerts?  Is it a rule, or is it the stream
> preprocessor?  (grep your rules files for the word "Tag".  I think there is
> only 1 rule in the VRT ruleset with tag turned on by default.
>
>
>
> As for the dcerpc2 preprocessor, take a look at the readme.  It has an
> "events none" configuration option for your snort.conf.
>
>
>
> J
>
> On Tue, May 5, 2009 at 6:25 PM, Jefferson, Shawn <
> Shawn.Jefferson at ...14448...> wrote:
>
> Hi,
>
>
>
> I want to suppress some alerts I’ve been getting, specifically the tag:
> tagged packet.  I’ve tried putting “suppress gen_id 2, sig_id 1” in the
> threshold.conf file, but this doesn’t seem to be working.  Is there a better
> way to suppress this alert?  Especially if there is a method that is better
> performance-wise.  I’ve looked around in the documentation and didn’t see
> anything specific to the tag: tagged packet alert.
>
>
>
> Also, the new dcerpc2 preprocesser is pretty noisy in my environment,
> creating quite a few alerts each day.  Can anyone share any tuning advice
> for this?
>
>
>
> Thanks,
>
> Shawn
>
>
>
>
>
> ------------------------------------------------------------------------------
> The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your
> production scanning environment may not be a perfect world - but thanks to
> Kodak, there's a perfect scanner to get the job done! With the NEW KODAK
> i700
> Series Scanner you'll get full speed at 300 dpi even with all image
> processing features enabled. http://p.sf.net/sfu/kodak-com
> _______________________________________________
> Snort-users mailing list
> Snort-users at lists.sourceforge.net
> Go to this URL to change user options or unsubscribe:
> https://lists.sourceforge.net/lists/listinfo/snort-users
> Snort-users<https://lists.sourceforge.net/lists/listinfo/snort-users%0d%0aSnort-users>list archive:
> http://www.geocrawler.com/redir-sf.php3?list=snort-users
>
>
>
>
> --
> joel esler | Sourcefire | gtalk: jesler at ...1935... | 302-223-5974 |
> http://twitter.com/joelesler
>



-- 
joel esler | Sourcefire | gtalk: jesler at ...1935... | 302-223-5974 |
http://twitter.com/joelesler
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.snort.org/pipermail/snort-users/attachments/20090506/7805ae79/attachment.html>


More information about the Snort-users mailing list