[Oisf-users] PCRE question

[Chris Wakelin]

On 11/07/2012 19:06, kay wrote:
> I have noticed /H modifier. I've never heard about such modifier.
> 
> "/Host\x3a ([0-9]{1,3}\.){3}[0-9]{1,3}/H"

From
https://redmine.openinfosecfoundation.org/projects/suricata/wiki/HTTP-keywords
:-
> H       Makes pcre match on the HTTP-header.  H can be combined with /R. Note that R is relative to the 
>         previous match so both matches have to be in the HTTP-header body.

plus several others!

Best Wishes,
Chris

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Christopher Wakelin,                           c.d.wakelin at reading.ac.uk
IT Services Centre, The University of Reading,  Tel: +44 (0)118 378 2908
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