Restricting Data Flows to Secure Against Remote Attack

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Presented at CyberScience2020 2020 by

John Laverty

Fully securing networks from remote attacks is recognized by the IT industry as a critical and imposingchallenge. Even highly secure systems remain vulnerable to attacks and advanced persistent threats. One-way flowsare a novel approach to improving the security of telemetry for critical infrastructure, retaining some of the benefitsof inter-connectivity whilst maintaining a level of network security analogous to that of unconnected devices. Simpleand inexpensive techniques can be used to provide this unidirectional security, removing the risk of remote attackfrom a range of potential targets and subnets. The application of one-way networks is demonstrated using IEEEcompliant PMU data streams as a case study. Scalability is demonstrated using SDN techniques. Finally, thesetechniques are combined, demonstrating a node which can be secured from remote attack, within defined limitations.