Did you know that SSL can be used for both client authentication as well as server authentication? And what is SSL client certificate authentication to begin with?
When most people refer to SSL certificates and the authentication they provide, it’s done in the context of server SSL certificates — not client authentication. This is an important to note because the vast majority of SSL certificates that are used are server certificates. When a client arrives at a website, the server presents its certificate and the client performs an authentication to verify the identity of the certificate’s owner.