Snort mailing list archives

Re: How to debugging on Snort?


From: Russ via Snort-devel <snort-devel () lists snort org>
Date: Fri, 18 May 2018 02:06:26 -0400

Snort 3 provides a trace facility that will output info for each step of signature evaluation (upon fast pattern match).  Check the "Module Trace" section (5.10.1) in the user manual.

On 5/17/18 10:10 PM, İzzettin Erdem via Snort-devel wrote:
Hello Everyone ,

I want to debug Snort but I didn't find something help me. Actually I want to learn that: Packets come in to network and Snort catches them. After that, Snort checks packets by rules. How can I see what Snort checks at a time and output of this check process?

Example check process for packet P1;

Searching for :
   content:"sa"
   offset:5
depth:10

output -> found or 1

continue to check packet p1:

content: "|02|"
offset: 33
depth: 45
.
.
.

output -> not found or 0


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