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1、计算机网络实验报告年级：姓名：学号：_实验日期：实验名称：利用Wireshark分析ICMP协议一、实验目的1.利川wireshark分析ICMP协议，学习了解ICMP数据包。2.学习ICMP报文段的各领域。二、实验器材3.接入Internet的计兑机主机；4.抓包工具wireshark和截閔工其snagit。三、实验内容1.1.WhatistheIPaddressofyourhost?WhatistheIPaddressofthedestinationhost?答：theIPaddressofyourhostis1
2、0.0.163.199,theIPaddressofthedestinationhostis143.89.14.34,实验截图如下田Headerchecksum:0x0000[incorrect,shouldbe0x8912]Source:10.0.163.TlO.0.163.ft的jp地址Destination:143.89.14.34(143.89.14.34)4**■标i[)i也ilt••2.WhyisitthatanICMPpacketdoesnothavesourceanddestinationportnu
3、mbers?答：因为端口号是运输层的，而iemp是乜装在ip数据报里，所以iemp包没有源和目的端口号。3.Examineoneofthepingrequestpacketssentbyyourhost.WhataretheICMPtypeandcodenumbers?WhatotherfieldsdoesthisICMPpackethave?Howmanybytesarethechecksum,sequencenumberandidentifierfields?答：theICMPtype:8codenumbers:
4、0试验截图如下：日internetcontrolMessageProtocolType:8
5、(Echo(ping)request)code:0thechecksum,：0x4d4fsequencenumber:12identifierfields：0x0001试验截图如hChecksum:0x4d4f[correct]Identifier:0x0001Sequencenumber:12(0x000c)Sequencenumber(LE):3072(OxOcOO)2.Examinethecorrespondingpin
6、greplypacket.WhataretheICMPtypeandcodenumbers?WhatotherfieldsdoesthisICMPpackethave?Howmanybytesarethechecksum,sequencenumberandidentifierfields?答：实验结果如下：的顧143,89,1010,0,163,199跟曲）购）喻⑽鍾,螂⑽⑽脚,Kliypp：0(Echo(ping)rpply)code:0Checksum:Ox334f[correct]Identifier:0x00
7、01Sequencenumber:12(OxOOOc)Sequencenumber(LE):JO/2(OxOcOO)3.WhatistheIPaddressofyourhost?WhatistheIPaddressofthetargetdestinationhost?答：theIPaddressofyourhostistheIPaddressofthetargetdestinationhostisSource:10.0.163.199(10.0.163.199)Destination:193.51.193.149(1
8、93.51.193.149)4.IfICMPsentUDPpacketsinstead(asinUnix/Linux)，wouldtheIPprotocolnumberstillbe01fortheprobepackets?Ifnot，whatwoulditbe?答：用的系统是windows系统5.ExaminetheICMPechopacketinyourscreenshot.IsthisdifferentfromtheICMPpingquerypacketsinthefirsthalfofthislab?Ifye
9、s,howso?答：不同试验截图如下：Type:8(Echo(ping)request)Code:0Checksum:Oxf740[correct]Identifier:0x0001Sequencenumber:190(OxOObe)Sequencenumber(LE):48640(OxbeOO)Type:0(Echo(ping)reply)c
