The easiest way to do this is to make sure you have the correct hostname in the virtual host - the one that matches your certificate and another virtual host which has no hostname in it to catch all the other requests.

<VirtualHost *:*>
  .... return a forbidden response for all requests!
  RewriteEngine On
RewriteRule ^(.*)$ - [L,F]

<VirtualHost *:*>
  ... real config...

On 08/02/2018 16:46, Houser, Rick wrote:

In addition to fixing your certificate, you may have a reason to make sure the host header they send is correct.  If they are reaching you via an alternate hostname or something that’s getting them to the correct IP, but shouldn’t be supported for your service, stopping them from doing that might take aware the incentive they see to disabling the hostname verification in the first place.

Rick Houser

Web Engineer

*From:* Eric Covener []
*Sent:* Thursday, February 08, 2018 11:19
*Subject:* Re: [users@httpd] SSL Certificate Validation


On Thu, Feb 8, 2018 at 7:36 AM, Belmona, Nizar < <>> wrote:

    Thanks Rainer and Daniel.

    Sorry for the confusion and please let me clarify.

    We have a web server with Apache 2.2.22 with OpenSSL 0.9.8t, the
    Apache service launches fine and the users/developers are able to
    connect however developers through their code bypass the Server
    SSL certificate verification. I am not worried about the client
    certificate validation since we are not using it,  all the concern
    is we need to stop users bypassing the Server SSL verification who
    are claiming they have to bypass it since the certificate name
    doesn’t match the server name in the link being called. Kindly
    note that configuration in hhtpd.conf is:

​You can't stop them unless you control the client. You only control the server. The only thing you could do is provide a better certificate.

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