Re: SSL - How client certificates are verified? (Apache Users)

Hi,

With the option "SSLVerifyClient require" , server mandates the client to send its certificate for authentication. Then the server verifies this client certificate against the CA certificate file configured in apache. If the client certificate has been signed by a valid CA, then the authentication is successful.

There are cases where sub CA certificate can be generated from root certificate. So, this will end up in a hierarchy of CA certificates. The final sub CA certificate would be used to sign client certificate. With option "SSLVerifyDepth 10", the server will verify the client certificate to the level of 10, meaning it will verify from 0 to up the hierarchy 10.

Maximum depth of CA Certificates in Client Certificate verification

When the client sends its fake certificate(not signed by the CA) , the authentication will fail at server.

Regards,

Mohan

On Sun, Aug 23, 2015 at 12:21 PM, Sterpu Victor <victor@xxxxxxxx> wrote:

Hello

I have a web page that asks for client certificate.

These are the options for this:

SSLVerifyClient require
SSLVerifyDepth 10

How does SSLVerifyClient verifies the client certificate?

This option protects against certificates manual made with a fake public-private key pair?

So can someoane make a certificate identical with the original, attach another set of public and private keys and pretend to be someoane else?

Thank you

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