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1、摘要网络的迅速发展,给人类生活带来方便,但也对网络安全提出了更高要求。需对网络协议进一步分析，才能够更加有效的安全的应用网络协议。ARP协议是TCP/IP协议中重要的一员,其功能主要是为局域网内网络设备提供IP地址向硬件地址（MAC地址）的转化,其设计建立在局域网内网络设备之间相互信任的基础上,对于不可信任的设备未加考虑，由此产生了许多ARP欺骗攻击方法。本文以ARP协议为基本原理,以防御ARP欺骗、提高网络安全为目的。首先,在对TCP/IP参考模型、ARP协议等相关理论学习的基础上,重点分析了ARP
2、协议的运行机制,包括ARP缓存、ARP帧格式、ARP请求和应答的运行过程等。其次,分析了ARP欺骗原理，ARP欺骗就是通过向目标主机发送一个伪造的包含IP-MAC映射信息的ARP应答报文实现的。最后,根据Windows系统在更新ARP缓存中IP地址和MAC地址映射信息时不检验更新内容可靠性的特点,提出了一种基于服务器客户端的ARP欺骗防御模型,以达到局域网中实现各主机防御ARP欺骗的目的。本软件使用VisualC++6.0作为开发工具，采用Winpcap（WindowsPacketCapture）进行
3、网络监视，来实现各种功能要求。关键词：ARP欺骗攻击；VisualC++6.0；监控；Protect；服务器；客户端officiallyestablishedonJuly1,2013,Yibincity,formerlyknownasthebus,integratedoriginalrongzhoubuscompanyinYibincityandMetrobuscompany,formedonlyinYibincityofaState-ownedpublictransportenterprises,t
4、hecompanyconsistsofoneortwo,thirdDivision.IntegrationofpublictransportservicesisnotyetestablishedAbstractTherapiddevelopmentofthenetwork,tohumanlife,butalsobringconveniencetonetworksecurityraisedtallerrequirement.Theneedforfurtheranalysisofnetworkprotoc
5、ols,itcanbemoreeffectiveapplicationofsecurityprotocols.ARPprotocolisTCP/IPprotocolanimportantone,anditsmainfunctionistoprovidenetworkequipmentfortheLANIPaddresstohardwareaddress(MACaddress)oftheconversion,itsdesignbasedonthelocalareanetworkequipmentbase
6、donmutualtrustbetweentheFornon-trusteddeviceisnotconsidered,solotsofARPspoofingattackmethod.Inthispaper,thebasicprincipleofARPprotocoltoguardagainstARPcheating,improvenetworksecuritypurposes.Firstofall,intheTCP/IPreferencemodel,ARPprotocolandotherrelate
7、dtheoreticalstudy,basedonARPprotocolanalyzedtheoperationofmechanisms,includingARPcache,ARPframeformat,ARPrequestandresponseoperationprocesses.Secondly,theanalysisoftheprincipleofARPdeception,ARPdeceptionisthroughtothetargethosttosendafakeIP-MACmappingco
8、ntainsinformationonARPresponsepackettoachieve.Finally,underWindowssystemARPcacheupdatingtheIPaddressandMACaddressmappinginformationwhentheupdatedoesnottestthereliabilityofthecharacteristicsofNeirong,aserver-basedclientARPdeceptio
