Authorization Authorization can occur via Ranger, or via NiFi and NiFi Registry’s internal file-based authorizer. Ranger AuthorizationLeverage Apache Ranger access policies to administer permissions for groups or individual users. File-Based AuthorizationWhen Ranger is not selected as a dependency during installation, NiFi or NiFi Registry’s internal file-based authorizer will be used for authorization.LDAP IntegrationAfter Ranger or file-based authorizations are implemented, the authorizations can be configured to integrate with LDAP.