Date Added: Jan 2014
Information security is gaining increasingly more importance for real-time automation networks. Multicast communication is used widely especially on field and process level to cope with performance requirements and to ease the handling of communication peers as the destinations need not to be known by the sender. A security design must not interfere with these communication types. This paper investigates into different approaches to achieve multicast security focusing on energy automation networks. Here, domain-specific protocols like GOOSE are used within substations to distribute measurement and status information between IEDs using plain Ethernet superseding classical copper wire connections.