实验5利用Ethereal分析TCP协议

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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Ethereal分析TCP协议一、实验目的二、实验器材1.接入Internet的计算机主机；2.抓包工具wireshark和截图T•具snagitc三、实验内容1・WhatistheIPaddressandTCPportnumberusedbytheclientcomputer(source)thatistransferringthefiletogaia.cs.umass.edu?Toanswerthisquestion,it，sprobablyeasiestt

2、oselectanHTTPmessageandexplorethedetailsoftheTCPpacketusedtocarrythisHTTPmessage,usingtheudetailsoftheselectedpacketheaderwindow”(refertoFigure2inthe“GettingStartedwithWireshark”Labifyou'reuncertainabouttheWiresharkwindows.答：theIPaddressusedbytheclientcomputer(so

3、urce)是：192.168.1.102theTCPportnumberusedbytheclientcomputer(source)是：1161如下图：No.h帆mMlnlonujiHiuiiiViMiiudiiXdWihiviiifi岬/iittiiiqwi川ij卜“申niirviruvicirv哪酬mi冊的伽呱口册冊1艸恤冊DM加7T2.WhatistheIPaddressofgaia.cs.umass.edu?OnwhatportnumberisitsendingandreceivingTCPsegmentsfo

4、rthisconnection?答：theIPaddressofgaia.cs.umass.eduisportnumberis实验结果如下图：1.WhatistheIPaddressandTCPportnumberusedbyyourclientcomputer(source)totransferthefiletogaia.cs.umass.edu?答：theIPaddressusedbytheclientcomputer(source)是：219.244.16&170theTCPportnumberusedbythec

5、lientcomputer(source)是：1432如下图：No.htat1totadbb1Stem

6、-・•••••••(•••••••♦•••・・••叽11M戏冊饷恤喇捌讹1•啣恤郦」觥獅）▼EirassiwlProtoraljy(Port:bWry-li(ftDstPort:http(ID),那bl,Ad(:1,血Sil"Sourceport:Mutoy-liM<■9DKtimtionport:kip(M)▼2.WhatisthesequencenumberoftheTCPSYNsegmentthatisusedt

7、oinitiatetheTCPconnectionbetweentheclientcomputerandgaia.cs.umass.edu?WhatisitinthesegmentthatidentifiesthesegmentasaSYNsegment?实验结果如下图：SequEfKEnuaber:0(阿亦牝sequEQCEnuaber)3.WhatisthesequencenumberoftheSYNACKsegmentsentbygaia.cs.umass.edutotheclientcomputerinreply

8、totheSYN?WhatisthevalueoftheACKnowledgementfieldintheSYNACKsegment?Howdidgaia.cs.umass.edudeterminethatvalue?WhatisitinthesegmentthatidentifiesthesegmentasaSYNACKsegment?3

9、TransiissioncontrolProtocol(srcPort:http(80),DstPort:sais(1426)fSeq:09Ack:1,ten:0Sourceport

10、:http(80)Destinationport:sais(1426)[Streamindex:0]1.WhatisthesequencenumberoftheTCPsegmentcontainingtheHTTPPOSTcommand?NotethatinordertofindthePOSTcommand,you"