Snort mailing list archives

Re: False positives(?) for spp_sip


From: "Joel Esler \(jesler\) via Snort-sigs" <snort-sigs () lists snort org>
Date: Fri, 17 Apr 2020 13:20:04 +0000

Hello Emil,

If you are not running SIP on your network, then yes, comment out the SIP preprocessor and that will solve your 
problem.  This can be done in your snort.conf file.

Sent from my  iPad

On Apr 17, 2020, at 09:01, Pettersson, Emil <emil.pettersson () sovos com> wrote:


Hi,
 
We’ve been getting a few blocks for traffic from customers, from looking into the logs if I’m understanding correctly 
these are getting caught by spp_sip due to traffic in these instances having source port 5060 (they’re doing a few 
thousand/day with random source port span).
Apr 17 09:33:31 snort[17881]: [140:3:2] (spp_sip) URI is too long [Classification: Potentially Bad Traffic] 
[Priority: 2] {TCP} [SOURCE_IP]:5060 -> [DESTINATION_IP]:443
There is no actual SIP traffic expected to go in or out from this network, so regardless of anything else I believe 
there’s no real reason to have these rules enabled? However I am unsure of what the correct way would be to disable 
them?
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