实验利用Wireshark分析ICMP协议「精编推荐]

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1、计算机网络一实验报告年级：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.利卅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的计算机主机；4.抓包工具wireshark和截图工具snagito三、实验内容1・1.WhatistheIPaddressofyourhost?WhatistheIPaddressofthedestinationhost?答：theIPaddressofyourhostis10.0.163.199,theIPaddressofthe

2、destinationhostis143.89.14.34,实验截图如下SHeaderchecksum:0x0000[incorrect,shouldbe0x8912]Source:10.0.163.199(10・0・16亍199}<我師p地址Destination:143.89.14.34(143.89.14.34)4**g标iDlMlt■■2.WhyisitthatanICMPpacketdoesnothavesourceanddestinationportnumbers?答：因为端口号是运输层的，而iemp是包装在ip数据报里，所以icmpiii没有源和目的端口号。3.

3、Examineoneofthepingrequestpacketssentbyyourhost.WhataretheICMPtypeandcodenumbers?WhatotherfieldsdoesthisICMPpackethave?Howmanybytesarethechecksum,sequencenumberandidentifierfields?答：theICMPtype:8codenumbers:0试验截图如下:0InternetcontrolMessageProtocolType:8

4、(Echo(ping)request)code:0thechecksum,:

5、0x4d4fsequencenumber:12identifierfields：0x0001试验截图如下：Checksum:0x4d4f[correct]Identifier:0x0001Sequencenumber:12(0x000c)Sequencenumber(LE):3072(OxOcOO)2.Examinethecorrespondingpingreplypacket.WhataretheICMPtypeandcodenumbers?WhatotherfieldsdoesthisICMPpackethave?Howmanybytesarethechecksum,se

6、quencenumberandidentifierfields?答：实验结果如下：8O2.M143.W.1O10仙侧ICNPEcho(ping)reply(個x(呱$啾/1慎曲2飞创)Type:0(Echo(ping)reply)code:0Checksum:Ox554f[correct]Identifier:0x0001Sequencenumber:12(OxOOOc)sequencenumber(LE):3072(OxOcOO)3.WhatistheIPaddressofyourhost?WhatistheIPaddressofthetargetdestinationho

7、st?答：theIPaddressofyourhostistheIPaddressofthetargetdestinationhostisSource:10.0.163.199(10.0.163.199)Destination:193.51.193.149(193.51.193.149)4.IfICMPsentUDPpacketsinstead(asinUnix/Linux),wouldtheIPprotocolnumberstillbe01fortheprobepackets?Ifnot,whatwoulditbe?答：用的系统是windows系统5.ExaminetheI

8、CMPechopacketinyourscreenshot.IsthisdifferentfromtheICMPpingquerypacketsinthefirsthalfofthislab?Ifyes,howso?答：不同试验截图如下：Type:8(Echo(ping)request)Code:0Checksum:Oxf740[correct]Identifier:OxOOOlSequencenumber:190(OxOObe)Sequencenumber(LE):48640(OxbeOO)Type: