Abstract: The paper presents a new kind of analysis method for computer system survivability which considers both exterior environment and interior components and their correlations. The method can describe the survivability more precisely and exactly. The priority using this method to security evaluation is also put forward.

Key words: Network security, Survivability, Intrusion tolerant, Security evaluation

摘要： 提出了一种新的计算机系统可生存能力的分析方法，该方法综合考虑系统外部环境和内部组件及其之间的相互关系，描述了系统的可生存能力。阐述了利用该方法对系统进行安全评估的措施及其优势。

关键词: 网络安全, 可生存性, 入侵容忍, 安全评估