h1. Authenticator and organization service configuration {anchor:id=CONTref.Configuration.Authentication_organization_service_configuration}

An authenticator is responsible for creating Identity Security Service Authenticator.

The eXo CMIS service is based on: 
* The authentication mechanism provided by the eXo organization service. 
* The JAAS configuration of eXo Platform. For example:
{code}
gatein-domain {
  org.exoplatform.web.security.PortalLoginModule required;
  org.exoplatform.services.security.jaas.SharedStateLoginModule required;
  org.exoplatform.services.security.j2ee.TomcatLoginModule required; 
};
{code}
