[Snort-sigs] sigs to catch response traffic

Matt Jonkman matt at ...2436...
Sun Jul 17 19:26:50 EDT 2005

You could do that with flowbits, but it'd probably be a good load on snort.

Worth looking into though.

Are you looking to know just about the error after a known attack, or
about all errors or non-error returns?


Russell Fulton wrote:
> Hi, does stream4 collect both directions of a flow?  I.e. is it possible
> to have a set of signatures that tags a flow (standard http attack) and
> then watched for a 200 response from the web server.
> I assume that the answer is no otherwise we would be diong this as a
> matter of routine.
> It long ago got to the stage where I ignore the flood of altert
> generated by people poking at our web servers.  The fact that some poked
> at our web server is of no interest at all.  The fact that someone poked
> at the web server and the server did not return an error is of interest.
> Perhaps this could be built into a preprocessor that returns the status
> on an http connections.
> Russell
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Matthew Jonkman, CISSP
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