SDN-based Differentiated Traffic Flow Management for Industrial Internet of Things Environments

Time Sensitive Networking (TSN) will be an integral component of industrial networking. Time synchronization in TSN is provided by the IEEE-1588, Precision Time Protocol (PTP) protocol. The standard, dating back to 2008, marginally addresses security aspects, notably not encompassing the frames designed for management purposes (Type Length Values or TLVs). In this work we show that the TLVs can be abused by an attacker to reconfigure, manipulate, or shut down time synchronization. The effects of such an attack can be serious, ranging from interruption of operations to actual unintended behavior of industrial devices, possibly resulting in physical damages or even harm to operators. The paper analyzes the root causes of this vulnerability, and provides concrete examples of attacks leveraging it to de-synchronize the clocks, showing that they can succeed with limited resources, realistically available to a malicious actor.

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Time sensitive networking security: issues of precision time protocol and its implementation

Berardi

Tippenhauer

Melis

et al. 2023

Cybersecurity

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SDN-based Differentiated Traffic Flow Management for Industrial Internet of Things Environments

Cited by 1 publication

References 16 publications

Time sensitive networking security: issues of precision time protocol and its implementation

Time sensitive networking security: issues of precision time protocol and its implementation

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