摘要
动态安全管理要求根据系统运行状况实时在线评估网络的安全状态。然而安全是一个难于量化的指标。在主机和网络安全状态定量评估方面,现有的安全标准不能提供一种快速、实用的工程化方法。综合分析影响主机和网络安全状态的各种因素,本文提出了一种网络安全状态在线定量评价体系和算法。算例表明该模型具有可操作性强、计算简单等特点,能够综合反映主机、网络运行时的安全状况。
Dynamic security management requires real-time evaluation online of the network system in the running state. However, network security is an index difficult to be quantified. The present security standards can not provide a quick and practicable engineering method to evaluate the security states of hosts and network systems quantitatively. Analyzing the comprehensive factors influencial in hosts and network security, this paper presents a system and an algorithm for online quantitative evaluation of network security. The calculation example shows that the evaluation model is easy to operate, simple to compute, and descriptive to assess the security state of hosts and network systems.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2005年第5期102-106,共5页
Journal of the China Railway Society
基金
国家"863"项目(2002AA145021)
西南交通大学科技发展基金(2004A13)
铁道部科技研究开发项目(2002X021)
关键词
网络安全
安全评估
动态安全管理
Network security
security evaluation
dynamic security management
