IIS 8.5 Mutual SSL at server level

Hi all,

I use IIS 8.5 on 2012 R2.

I try to initialize mutual SSL between Apache and IIS.

The users are connected to Apache web site which send connexion to IIS. I'd like that IIS authenticate the Apache server with its computer certificate.

In IIS I've enter the public Apache certificate but an account is requested!

How to setup SSL mutual at the server level not to authenticate the user?

Thanks in advance