测控技术2025，Vol.44Issue(12)：37-43,7.DOI:10.19708/j.ckjs.2025.12.301
云计算数据传输链路安全自动化检测方法研究
Research on Automatic Detection Method for Cloud Computing Data Transmission Link Security
摘要
Abstract
In the highly dynamic and heterogeneous cloud computing network environment,data transmission links are faced with issues such as strong time-varying characteristics,hidden abnormal patterns,and delayed detection responses.The detection mechanism based on static features or single time point sampling is difficult to effectively capture the dynamic evolution law and intrinsic correlation of the link state,resulting in insuffi-cient recognition accuracy for security events such as sudden packet loss and periodic fluctuations,and heavily relying on manual intervention,which cannot meet the needs of automated security operation and maintenance.Therefore,a cloud computing data transmission link security automatic detection method is proposed,which in-tegrates maximum likelihood estimation,entropy weight method,and isolation forest algorithm.By using a linear model to characterize the distribution of link characteristics,maximum likelihood estimation and expectation-maximization(EM)algorithm are employed to infer the discretized packet loss rate space,in order to accurately extract key features.The entropy weight method is introduced to evaluate the global and local weights of packet loss rate,and a feature mirror image is constructed to visually present the dynamic correlation and structural characteristics of packet loss rate at multiple time nodes.Multiple isolation trees are constructed to form an iso-lation forest model.Through recursive segmentation and anomaly scoring mechanisms,the automatic and accu-rate detection of link security is realized.The experimental results show that this method has excellent perform-ance in key indicators such as packet loss rate detection accuracy,security event recognition coverage,and F1 score,demonstrating excellent detection performance and generalization ability.关键词
云计算/数据传输链路/自动化检测/特征镜像图/极大似然估计/孤立森林算法Key words
cloud computing/data transmission link/automatic detection/feature mirror image/maximum like-lihood estimation/isolation forest algorithm分类
信息技术与安全科学引用本文复制引用
魏柳,黄优哲,李强,赵子宜..云计算数据传输链路安全自动化检测方法研究[J].测控技术,2025,44(12):37-43,7.基金项目
2024年南方电网电动汽车服务有限公司网络安全监督运营辅助服务项目(CG3800022001914650) （CG3800022001914650）
