摘要
对入侵容忍系统状态转移模型进行了改进,以此构建了半马尔可夫过程(SMP)模型,并用该模型计算了各状态的稳态概率.针对4类不同的攻击行为,运用SMP模型研究入侵容忍系统的可用性、完整性与机密性,定量评估入侵容忍系统的安全属性.比较分析了系统安全属性的数值结果,为在不同攻击行为下采取有效的容侵策略提供了依据.
An improvement in the state transition model of intrusion tolerance system is proposed and a semi-Markov process （SMP） model is built. The steady-state probability of each state in the model is computed. In order to evaluate the security attributes quantitatively, the SMP model is used to study availability, integrity and confidentiality of intrusion tolerance system under four kinds of attacks. The numerical result is presented and analyzed. The results show that they are useful references to taking effective measures to tolerate the different attacks.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2008年第3期94-97,共4页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(60774091)
关键词
入侵容忍
状态转移
半马尔可夫过程
安全属性
intrusion tolerance
state transition
semi-Markov process
security attribute
