【摘要】 网络信息侦听是网络监测、负载分析等管理活动常用的方法,同时也是黑客非法窃取信息的手段。文章通过分析网络传输介质的共享特性,讨论了侦听系统在Windows下的实现,BPF结构及如何对其性能进行优化,为网络管理员对网络中的信息进行实时的监测、分析提供一个合适的工具,并探讨如何避免黑客利用侦听方式对网络进行攻击。更多还原

【Abstract】 Network information detection is the basic method to analyze the traffic and manage the network,it is also used by hacker to get the information illegally.Based on the analyzing of network sharing media,this paper presents how to implement sniffer in Windows and also discusses how to optimize its performance through the research on BPF ar-chitecture.This paper introduces the network administrator a useful tool for network management and gives them some measures how to avoid the attacks by hackers using sniffer.更多还原