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Network Security Snort-Users
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Re: [Snort-users] Pass rule vs. threshold/suppression

Subject: Re: [Snort-users] Pass rule vs. threshold/suppression
Date: Tue, 25 Jul 2006 21:54:19 +0300
"suppress gen_id xxx, sig_id xxx, track by_dst, ip xxx, track by_dst, ip xxx"

It works for me. infact, you don't have to put /32 if you mean one addr.

On Tue, Jul 25, 2006 at 09:37:47AM -0700, Jon Hart wrote:
On Tue, Jul 25, 2006 at 12:27:04PM -0400, Joel Esler wrote:
Have you tested to see if this works?  

I tried this a week or so ago with 2.4.5.  I was told it would work, but
my initial testing showed that it did not work -- I'd still get alerts
for that specific combination of sid, src and dest.  I only spent a few
minutes on this, but I recall seeing the threshold table being printed
when snort starts and it only include.

I just retested this and if a suppress rule has a by_src and by_dst, the
one that appears last on the config line takes precedence:

threshold.conf:
  suppress gen_id 1, sig_id 2925, track by_src, ip 1.2.3.4/32, track
  by_dst, ip 5.6.7.8/32

/var/log/messages:
  Jul 25 09:35:26 ids-box snort[6939]: | gen-id=1      sig-id=2925
  tracking=dstip=5.6.7.8           mask=255.255.255.255


-jon

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