[Snort-users] activate/dynamic rules problem

Joel Esler (jesler) jesler at ...589...
Mon Jan 12 09:53:58 EST 2015

> On Jan 11, 2015, at 8:21 AM, Mark Greenman <mark.greenman.014 at ...11827...> wrote:
> Hi. Do you know the reason for this warning after using activate/dynamic rules:
> WARNING: an activation rule with no dynamic rules matched.
> The set of rules that I have used in the experiment are:
> activate tcp 80 -> 50444 (msg:"adc!"; content:"Tree"; activates:1; sid:1000001;)
> dynamic tcp 80 -> 50444 (msg:"dyn!"; activated_by:1; count:3; sid:1000002;)

Are you sure “flowbits” aren’t a better option for what you are trying to do?

Joel Esler
Open Source Manager
Threat Intelligence Team Lead
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