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arXiv 2303.09893cs.CRcs.NI
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面向服务的关键任务网络移动目标防御

Moving Target Defense for Service-oriented Mission-critical Networks

Doğanalp Ergenç, Florian Schneider, Peter Kling, Mathias Fischer

摘要:

现代关键任务系统(MCS)越来越软件化和互连。因此,它们的复杂性增加,因此它们对网络攻击的脆弱性也增加。当前在MCS中采用的虚拟化和面向服务的架构(SOA)提供了额外的灵活性,可以利用这些灵活性来抵御和减轻攻击,例如,通过移动关键服务或数据流。这使得移动目标防御(MTD)策略的部署成为可能,这使得攻击者能够从MCS的长期侦察中剥离其不对称优势。然而,它是具有挑战性的设计MTD战略,考虑到不同的威胁景观,资源限制,并在服务可用性的潜在退化。在本文中,我们结合两个优化模型,探索可行的服务配置SOA为基础的系统,并推导出随后的MTD行动的时间表的基础上的攻击者-防御者的游戏。我们的研究结果表明,即使是具有挑战性和多样化的攻击场景,我们的模型可以保护系统高达90%的系统运行时间与有限的MTD防御预算。

英文摘要:

Modern mission-critical systems (MCS) are increasingly softwarized and interconnected. As a result, their complexity increased, and so their vulnerability against cyber-attacks. The current adoption of virtualization and service-oriented architectures (SOA) in MCSs provides additional flexibility that can be leveraged to withstand and mitigate attacks, e.g., by moving critical services or data flows. This enables the deployment of strategies for moving target defense (MTD), which allows stripping attackers of their asymmetric advantage from the long reconnaissance of MCSs. However, it is challenging to design MTD strategies, given the diverse threat landscape, resource limitations, and potential degradation in service availability. In this paper, we combine two optimization models to explore feasible service configurations for SOA-based systems and to derive subsequent MTD actions with their time schedule based on an attacker-defender game. Our results indicate that even for challenging and diverse attack scenarios, our models can defend the system by up to 90% of the system operation time with a limited MTD defender budget.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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