By default, communication between repository and Solr is protected by SSL with mutual
   authentication. Both the repository and Solr have their own standard public/private key pair. To
   secure the two-way communication between the repository and Solr, you must generate your own
   keys.
  Note: Every installation is supplied with a generic certificate and SSL keys. For security
    reasons, it is advised that you generate a new set of keys to secure you Solr communication and
    access to the Solr Admin Console. For more information, see Configuring Solr and Generating secure
     keys for Solr communication.