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From allan juul <>
Subject Re: [users@httpd] SSL termination on apache but client certificate routed through
Date Wed, 14 Sep 2005 17:51:17 GMT
> If I get that right your solution would provide the client certificate
> to the backend server in the form of a header variable. Is that
> correct?

yes, that's correct

> Therefor the client certificate would not be available as part of a
> normal, standard conform SSL handshake but be essentially be copied in
> the normal http data part. I would then need to change my backend
> server's code to look for the certificate at a different place?


> Don't get me wrong, if my developers here tell me that they can change
> our application server in this way, I'd be more than happy to use that
> solution.. I just don't see how the server could validate the
> certificate in this scenario as he does not have access to the client
> but only to the reverse proxy.

the backend *code* has a access to the client certificate.
is it your backend *webserver* or is it your backend *code* that is
handling the validation of the client certificate ?

what i don't understand at this point, is why you want the validating
done at  the backend at all, when you could have all this done at the
is it really nesecary to do the webserver validation on the backend. is
it actually possible to bypass the apache frontend and therefore access
the backend directly (which sounds slightly insecurish)

(the solution i described, we had https at the frontend and http at the

> Let me ask you this question: If I'd provide the client certificate to
> the backend application server during the normal SSL handshake between
> apache and application server - let's say I would copy it to the ├╝place
> where the apache certificate would normally be -, that surely would
> lead to a mismatch between the DN of the certificate and the hostname
> of the server presenting the certificate, would it not?

i don't know. but it does not sound possible.


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