With the development of network applications, the network security assessment has become an important subject of researches on network security. In order to overcome the defects of traditional network security evaluation models, the network security assessment model based on the comprehensive grey relational analysis, which is the organic combination of grey relation analysis and the analytic hierarchy process (AHP), was proposed in this paper. Firstly, the proposed model used the Delphi method to construct the network security assessment index system. Secondly, it utilized AHP to work out the speciifc weight of each index. Finally, the comprehensive grey relational degree was calculated to evaluate the network security. By means of simulating a campus network with MATLAB, the research results show that the evaluation is more accurate and the proposed assessment method is an efifcient, accurate and practical network security assessment method.%随着网络应用的发展，网络安全评估已成为网络安全研究的一个重要课题。为了克服传统网络安全评估模型的不足，文章提出了基于灰色综合关联分析的网络安全综合评估模型。该模型将灰色关联分析法与层次分析法有机结合，首先通过德尔菲法建立评估指标体系，然后采用层次分析法确定各被评因素的权重，最后计算灰色关联度对网络安全进行评估。利用该方法对某高校网络进行仿真实验，结果表明，该方法评估结果准确，是一种高效、准确和实用的网络安全评估方法。
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