Snort mailing list archives

Re: Rule Making Question


From: "Joel Esler \(jesler\) via Snort-sigs" <snort-sigs () lists snort org>
Date: Tue, 12 Oct 2021 15:20:55 +0000

Rules are “positive” matches.  You can look for the lack of something, but you must tell the rule to look for something.



On Oct 11, 2021, at 08:52, EGD via Snort-sigs <snort-sigs () lists snort org<mailto:snort-sigs () lists snort org>> 
wrote:

I am new to rule writing and wanted to know when using multiple "content" tags and "pcre" tags if they are conditional. 
In other words, do they trigger if all of them get found true or if at least one does.

i.e. content: "username"; content: "| 4c 55 6d|"; pcre "^[wW]hat[ .-]?[eE]ver$"

would the rule trigger is only one of the above examples is true or if all - bonus question, could I make it 
conditional within the rule?


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