National Technology & Engineering Solutions of Sandia, LLC

Alexander Roesler

Jason Hamlet

Chris Jenkins

Abraham Anthony Clements

John Mulder

Described herein are various technologies for detection and mitigation of rogue terminal attacks on multiplex data buses. An intrusion detection device is incorporated between a bus controller and a bus of a multiplex data bus. The intrusion detection device receives message that are communicated among the bus controller and a plurality of remote terminals (by way of the bus). The intrusion detection device determines whether messages are unauthorized based upon origins of the messages and predefined rules. When a message is determined to be unauthorized, the intrusion detection device outputs a notification that the unauthorized message has been detected and can block the unauthorized message.

Intrusion detection apparatus, system and methods

Described herein are various technologies for providing active mitigation of cyber-attacks against industrial and other control systems. A filtering device is connected to a backplane of a control system and receives communications from various modules of the control system. The filter device analyzes the received communications and determines whether they are genuine and permissible communications for the control system. Validated signals are output to a communications bus of the control system by the filter device, while impermissible communications are blocked. The filter device can be interposed between the modules of the control system and the backplane, or the filter device can be included as a component of a control system backplane.

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Sandia Park, NM, United States of America

Alexander Roesler