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首页> 外文期刊>IEEE transactions on industrial informatics >Denial of service attacks on network-based control systems: impact and mitigation
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Denial of service attacks on network-based control systems: impact and mitigation

机译：基于网络的控制系统上的拒绝服务攻击：影响和缓解

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摘要

Replacing specialized industrial networks with the Internet is a growing trend in industrial informatics, where packets are used to transmit feedback and control signals between a plant and a controller. Today, denial of service (DoS) attacks cause significant disruptions to the Internet, which will threaten the operation of network-based control systems (NBCS). In this paper, we propose two queueing models to simulate the stochastic process of packet delay jitter and loss under DoS attacks. The motivation is to quantitatively investigate how these attacks degrade the performance of NBCS. The example control system consists of a proportional integral controller, a second-order plant, and two one-way delay vectors induced by attacks. The simulation results indicate that Model I attack (local network DoS attack) impairs the performance because a large number of NBCS packets are lost. Model II attack (nonlocal network DoS attack) deteriorates the performance or even destabilizes the system. In this case, the traffic for NBCS exhibits strong autocorrelation of delay jitter and packet loss. Mitigating measures based on packet filtering are discussed and shown to be capable of ameliorating the performance degradation.
机译：用Internet代替专用的工业网络是工业信息学的一种增长趋势，在工业信息学中，数据包用于在工厂和控制器之间传输反馈和控制信号。如今，拒绝服务（DoS）攻击对Internet造成了严重破坏，这将威胁基于网络的控制系统（NBCS）的运行。在本文中，我们提出了两个排队模型来模拟在DoS攻击下数据包延迟抖动和丢失的随机过程。目的是定量研究这些攻击如何降低NBCS的性能。示例控制系统由比例积分控制器，二阶工厂和两个由攻击引起的单向延迟矢量组成。仿真结果表明，由于大量NBCS数据包丢失，模型I攻击（本地网络DoS攻击）损害了性能。 II型攻击（非本地DoS攻击）会降低性能甚至破坏系统的稳定性。在这种情况下，NBCS的流量表现出强烈的延迟抖动和丢包自相关。讨论了基于数据包过滤的缓解措施，并显示了缓解性能下降的能力。

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