关键词: 古林法, 模糊评判法, 大规模网络, 威胁评估

Abstract: Chinese Internet is facing increasingly serious security threat.In order to enhance the defense capabilities of existing networks，there is great need to study a scientific and rational method to evaluate the security situation of Internet in China timely.However，there has not yet a mature way in large-scale network security assessment at home and abroad.This paper presents a threat evaluation model for large-scale network based on A.J.Klee and fuzzy evaluation method.Experiments show that using this model can effectively assess the security threat status of large-scale network.

Key words: A.J.Klee, fuzzy evaluation method, large-scale network, threat evaluation