Techniques for Enhancing Security in Industrial Control Systems

IF 2 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Vijay Varadharajan, Uday Tupakula, Kallol Krishna Karmakar
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Abstract

Increasingly Industrial Control Systems (ICS) systems are being connected to the Internet to minimise the operational costs and provide additional flexibility. These control systems such as the ones used in power grids, manufacturing and utilities operate continually and have long lifespans measured in decades rather than years as in the case of IT systems. Such industrial control systems require uninterrupted and safe operation. However, they can be vulnerable to a variety of attacks, as successful attacks on critical control infrastructures could have devastating consequences to the safety of human lives as well as a nation’s security and prosperity. Furthermore, there can be a range of attacks that can target ICS and it is not easy to secure these systems against all known attacks let alone unknown ones. In this paper, we propose a software enabled security architecture using Software Defined Networking (SDN) and Network Function Virtualisation (NFV) that can enhance the capability to secure industrial control systems. We have designed such an SDN/NFV enabled security architecture and developed a Control System Security Application (CSSA) in SDN Controller for enhancing security in ICS by achieving real time situational awareness and dynamic policy-driven decision making across the network infrastructure. In particular, CSSA can be used for establishing secure path for end-to-end communication between devices and also deal against certain specific attacks namely denial of service attacks, from unpatched vulnerable control system components and securing the communication flows from the legacy devices that do not support any security functionality. We also discuss how CSSA provides reliable paths for safety critical messages in control systems. We discuss the prototype implementation of the proposed architecture and the results obtained from our analysis.
提高工业控制系统安全性的技术
越来越多的工业控制系统(ICS)系统连接到互联网,以最大限度地降低运营成本并提供额外的灵活性。这些控制系统,如电网、制造业和公用事业中使用的控制系统,持续运行,寿命长,以几十年为单位,而不是像IT系统那样以年为单位。这种工业控制系统需要不间断和安全运行。然而,它们可能容易受到各种攻击,因为对关键控制基础设施的成功攻击可能对人类生命安全和国家安全与繁荣造成毁灭性后果。此外,可能会有一系列针对ICS的攻击,要保护这些系统免受所有已知攻击并不容易,更不用说未知攻击了。在本文中,我们提出了一种使用软件定义网络(SDN)和网络功能虚拟化(NFV)的软件支持的安全架构,可以增强保护工业控制系统的能力。我们设计了这样一个支持SDN/NFV的安全架构,并在SDN控制器中开发了一个控制系统安全应用程序(CSSA),通过实现跨网络基础设施的实时态势感知和动态策略驱动决策来增强ICS的安全性。CSSA可用于为设备之间建立端到端通信的安全路径,并可应对某些特定的攻击,即来自未修补的易受攻击的控制系统组件的拒绝服务攻击,以及保护来自不支持任何安全功能的旧设备的通信流。我们还讨论了CSSA如何为控制系统中的安全关键消息提供可靠的路径。我们讨论了所提出的体系结构的原型实现以及从分析中获得的结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACM Transactions on Cyber-Physical Systems
ACM Transactions on Cyber-Physical Systems COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS-
CiteScore
5.70
自引率
4.30%
发文量
40
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