| 面向安全威胁的铁路网络防御策略研究 |
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| 引用本文： | 朱广劼.面向安全威胁的铁路网络防御策略研究[J].铁路计算机应用,2020,29(8):11-14. |
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| 作者姓名： | 朱广劼 |
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| 作者单位： | 中国铁道科学研究院集团有限公司 电子计算技术研究所, 北京 100081 |
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| 基金项目： | 中国铁路总公司科技研究开发计划课题（N2018S005） |
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| 摘 要： | 介绍国内针对特定网络的攻击防御策略理论研究概况，简述铁路网络系统复杂性特点与安全要求；为应对日益严峻的安全威胁，提出面向铁路网络的分层动态攻防博弈模型，将其构建过程按网络防御方案与资源分配、攻击效果最大化以及攻击损失最小化3个功能层次划分为3个步骤，在此基础上构建铁路网络3层攻防博弈模型，定义其各层的目标和约束条件的数学表达式，并给出求解方法。
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| 关 键 词： | 防御策略 网络安全 分层模型 最优化策略 约束条件 |
| 收稿时间： | 2020-03-30 |
Research on defence strategy of railway network against security threats |
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| Affiliation: | Institute of Computing Technologies, China Academy of Railway Sciences Corporation Limited, Beijing 100081, China |
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| Abstract: | The theoretical researches on defence strategies for special networks in China are briefly introduced and the complexity and security requirements of railway network are outlined. To cope with ever-increasing security threats, a hierarchical dynamic offense and defence game model is proposed. The construction process of such a model is specially divided into three steps in terms of the three functional levels of defence planning and resource allocation, maximization of attack effects, and minimization of attack loss. On this basis, a three layer model oriented to railway network is built and the mathematical expressions of objective functions and constraint conditions of each layer are given and a resolution method is provided. |
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