相比于传统的网络而言,主动网络的特点具有很大的开放性以及灵活性,并且用户可以利用其中间节点来编程,是一种新型的网络体系结构。但是,同时也使主动网络所面临的安全问题更加严重。本论文就此问题进行了简要的概括和分析,结合主动节点的安全性进行分析,提出了一种适用的主动节点的安全模型。这种模型采用的是认证、授权、访问控制以及主动权能的动态加载决策进行了安全措施的保证,来避免主动节点的安全数据受到恶意代码的攻击。 Compared with the traditional network, active network has the characteristics of a great openness and flexibility, and users can use their intermediate nodes to program, is a new type of network architecture. However, it also aggravates the security issues that active networks face. This thesis briefly summarizes and analyzes the problem, and analyzes the security of the active node. A suitable security model of the active node is proposed. This model uses the guarantee of dynamic loading decision of authentication, authorization, access control and initiative power to prevent the active node’s security data from being attacked by malicious code.