Implementing a vertically hardened DNP3 control stack for power applications

Bratus, S., Crain, A.J., Hallberg, S., Hirsch, D.P., Patterson, M.L., Koo, M., Smith, S.W.

Proceedings of the 2nd Annual Industrial Control System Security Workshop (ICSS '16). ACM, New York, NY, USA, 45-53.

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We present an assurance methodology for producing significantly more secure implementations of SCADA/ICS protocols, and describe our case study of applying it to DNP3, in the form of a filtering proxy that deeply and exhaustively validates DNP3 messages. Unlike the vast majority of deployed proprietary DNP3 implementations, our code demonstrates resilience to state-of-the-art black-box as well as white-box fuzz-testing tools.

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