【摘要】 为了改善目前无线网络数据监听技术中存在的严重丢包现象,在Linux环境下提出一种基于Libpcap异步机制的监听新方法,可通过进行IEEE 802.11协议的数据包捕获和过滤模块设计,利用Libpcap机制的BPF过滤器和包转发功能,实现无线网络数据包的有效监听。与普通监听技术相比,基于新方法而设计的体系结构丢包少、效率高,能有效提高网络数据监听效率。更多还原

【Abstract】 In order to overcome the packet-loss problem in wireless network monitoring technology,a new method based on Libpcap asynchronous mechanism in Linux is proposed,which can be carry out by properly designing the packet-capturing and packet-filtering modules with IEEE802.11 protocol,and making the best use of the Libpcap BPF filters and packet-forwarding mechanism.Compared with the ordinary monitor,a system based on the new method works effectively,and lose little packet.更多还原