|  |  | CiscoSecure ACS has the following features: Authentication Forwarding. CiscoSecure ACS can automatically forward a request from a network access server to another CiscoSecure ACS. Fallback on Failed Connections. In the event the primary CiscoSecure ACS cannot be reached, a backup will be contacted. If no CiscoSecure ACS can be reached, authentication will fail. Remote and Centralized Logging. CiscoSecure ACS can send log file information to another server to create a central location for all accounting and security logs.