Nowadays,people are highly dependent on network to enjoy the convenience,at the same time,people require higher safety of network,for the network security problems might lead to a great loss to the society and economy. Network security situation assessment reflect the network security situation on the whole,has the characteristics of real-time,comprehensiveness,multi-angle,multi-granularity. The author researched on network security situation awareness,established evaluation model,united two aspects of host security situation and security situation of network components to quantify the evaluation of network security situation,which embodies the service ability of the network,and testes the connectivity of the network.%人们在高度依赖网络享受便利的同时也对网络的安全性提出更高的要求，因为网络安全问题的出现将对社会经济造成莫大的损失。网络安全态势评估可从整体上反映网络安全的状况，具有实时性、综合性、多角度、多粒度等特点。从研究网络安全态势入手，建立评估模型，综合主机安全态势与网络组件安全态势两个方面来量化评估计算网络安全态势，既体现了网络的服务能力，又检验了网络的连通性。
展开▼
