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From Nick Kew <>
Subject Re: [users@httpd] Filtering incoming request with mod_ext_filter
Date Wed, 23 Oct 2013 20:14:19 GMT

On 23 Oct 2013, at 20:53, Daniel Stefaniuk wrote:

> Is this doable with filters? 

Yes and no.

Yes, it can be done.
No, it can easily be done wrong, so it might pass your tests then
be bypassed in operation.  For example, the filter encounters
something that should abort the request, but the proxy has
already started the request to the backend.

However, what you're asking sounds something like a WAF.
Chances are, you can do what you want with an existing WAF
such as Ironbee ( or mod_security.

Nick Kew

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