计算机网络实验报告-实验五探索tcp协议

《计算机网络实验报告-实验五探索tcp协议》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、陕西师范大学　计算机网络　实验报告实验五探索TCP协议一、实验目的1.熟悉并掌握wireshark的操作。2.通过实验分析并掌握TCP是如何进行数据传输的，及其如何实现拥塞控制、流量控制等二、实验器材1.PC机电脑一台。2．下载wireshark软件并安装三、实验内容通过实验分析并掌握TCP是如何进行数据传输的，及其如何实现拥塞控制、流量控制等四、问题回答1.CapturingabulkTCPtransferfromyourcomputertoaremoteServerGothehttp://gaia.cs.umass.edu/wiresharklabs/a

2、lice.txtandretrieveanASCIIcopyofAliceinWonderland.Storethisfile.somewhereonmycomputer.Nextgotohttp://gaia.cs.umass.edu/wireshark-labs/TCP-wireshark-file1.html.ThenIcanseeascreenthatlookslike:－22－startupWiresharkandbeginpacketcapture.Returningtobrowser,pressthe“Uploadalice.txtfile”b

3、uttontouploadthefiletothegaia.cs.umass.eduserver.StopWiresharkpacketcapture.TheWiresharkwindowlikethis:ThenopeningtheWiresharkcapturedpacketfiletcpethereal-trace-1inhttp://gaia.cs.umass.edu/wireshark-labs/wireshark-traces.zip,－22－2.Afirstlookatthecapturedtrace1.WhatistheIPaddressan

4、dTCPportnumberusedbytheclientcomputer(source)thatistransferringthefiletogaia.cs.umass.edu?Toanswerthisquestion,it’sprobablyeasiesttoselectanHTTPmessageandexplorethedetailsoftheTCPpacketusedtocarrythisHTTPmessage,usingthe“detailsoftheselectedpacketheaderwindow”(refertoFigure2inthe“G

5、ettingStartedwithWireshark”Labifyou’reuncertainabouttheWiresharkwindows).ipaddressTcpportnumber答：clientcomputer(source)：IPaddress：192.168.1.102－22－TCPportnumber：11612.WhatistheIPaddressofgaia.cs.umass.edu?Onwhatportnumberisitsendingipaddress:andreceivingTCPsegmentsforthisconnection

6、?portnumber答：theIPaddressofgaia.cs.umass.edu：IPaddress：128.119.245.12portnumber：803.Ifyouhavebeenabletocreateyourowntrace,answerthefollowingquestion:WhatistheIPaddressandTCPportnumberusedbyyourclientcomputer(source)totransferthefiletogaia.cs.umass.edu?－22－ipaddress:Tcpportnumber答：M

7、yclientcomputer:IPaddress:10.2.136.30ThenWiresharkdothis,selectAnalyze->EnabledProtocols.ThenunchecktheHTTPboxandselectOK.nowseeanWiresharkwindowthatlookslike:－22－3.TCPBasicsAnswerthefollowingquestions；4.WhatisthesequencenumberoftheTCPSYNsegmentthatisusedtoinitiatetheTCPconnectionb

8、etweentheclientcomputerand