Due to completely open of communication channel,limitation of dynamic topology and node resources etc, the deployment and application of wireless sensor network faces enormous threats and challenges in its security. The existing wireless sensor network security system has poor scalability and protection capability,in order to solve these problems.it analyzes the characteristics and difficulties of the network defense. Then undertakes analysis and design the security framework oriented active defense for WSN. Through collaborative interaction of modules, the framework in this paper recycles multiple means including prevention, intrusion detection, defense response and dynamic consolidation to provide a comprehensive multi-layered security model of active defense.%无线传感器网络的部署和应用受通信信道开放、动态拓扑和节点资源严格受限等因素制约,其安全性面临着巨大的威胁和挑战.文中在分析了现有WSN安全防御的特点和难点的基础上,针对目前无线传感器网络安全技术处于被动防守、扩展性差、动态防护能力不强的问题,分析并设计了面向主动防御的WSN安全框架.通过各模块协同联动,运用“预防-＞入侵探测(预测)-＞防御响应-＞动态加固”多重手段,提供了一个全方位多层次的主动防御安防模式.
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