分析了PPDR 自适应网络安全模型的不足，提出了一种新的基于主动防御的网络安全模型RPPDRA，在此基础上设计了一个联动的、纵深防御的网络安全解决方案。关键词: 网络安全模型; 安全认证; 风险分析;RPPDRAAbstract: The article analyzed the deficiency of PPDR adaptive network security model,proposed a kind of new security model RPPDRA based on active defense, designed the network security solutions of linkage , deep defense on this basis.Keywords: Network security model；Security certification；Risk analysis；RPPDRA