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arXiv 1701.04293cs.NI
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利用SDN以更智能的方式监控关键的网络结构

Leveraging SDN to Monitor Critical Infrastricture Networks in a Smarter Way

Roberto di Lallo, Federico Griscioli, Gabriele Lospoto, Habib Mostafaei, Maurizio Pizzonia, Massimo Rimondini

摘要:

在关键基础设施中,通信网络用于在工业控制系统(ICS)的元件之间交换重要数据。由于这类系统的关键性以及在这些情况下网络安全风险的增加,最佳做法建议采用入侵检测系统作为监测设施。IDS位置的选择对于监控尽可能多的数据流量流至关重要。这对于ICS网络的流量模式尤其如此,ICS网络主要局限于许多子网,这些子网在地理上是分布式的,并且在很大程度上是自治的。我们介绍了一种方法和一个软件架构,允许ICS运营商使用多余的带宽,可能是在过度配置的网络转发流量流的副本对一个单一的IDS放置在任意位置。我们利用ICS网络的某些特性,如拓扑结构的稳定性和带宽需求的可预测性,并利用软件定义网络(SDN)范式。我们在功能和安全方面都满足关于数据包丢失的严格要求。最后,我们评估我们的方法来自真实网络的网络拓扑结构。

英文摘要:

In critical infrastructures, communication networks are used to exchange vital data among elements of Industrial Control Systems (ICSes). Due to the criticality of such systems and the increase of the cybersecurity risks in these contexts, best practices recommend the adoption of Intrusion Detection Systems (IDSes) as monitoring facilities. The choice of the positions of IDSes is crucial to monitor as many streams of data traffic as possible. This is especially true for the traffic patterns of ICS networks, mostly confined in many subnetworks, which are geographically distributed and largely autonomous. We introduce a methodology and a software architecture that allow an ICS operator to use the spare bandwidth that might be available in over-provisioned networks to forward replicas of traffic streams towards a single IDS placed at an arbitrary location. We leverage certain characteristics of ICS networks, like stability of topology and bandwidth needs predictability, and make use of the Software-Defined Networking (SDN) paradigm. We fulfill strict requirements about packet loss, for both functional and security aspects. Finally, we evaluate our approach on network topologies derived from real networks.

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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