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

An authenticator is responsible for creating Identity [Security Service Authenticator|#Core.Security.Service].

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}
