Wireless Sniffing with Wireshark.pdf

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1、ethereal_ch06.qxd11/8/065:07PMPage1Chapter6WirelessSniffingwithWiresharkSolutionsinthischapter:■TechniquesforEffectiveWirelessSniffing■UnderstandingWirelessCardOperatingModes■ConfiguringLinuxforWirelessSniffing■ConfiguringWindowsforWirelessSniffing■UsingWirelessProtocolDissecto

2、rs■UsefulWirelessDisplayFilters■LeveragingWiresharkWirelessAnalysisFeaturesSummarySolutionsFastTrackFrequentlyAskedQuestions6:1ethereal_ch06.qxd11/8/065:07PMPage26:2Chapter6•WirelessSniffingwithWiresharkIntroductionWirelessnetworkingisacomplexfield.Withcountlessstandards

3、,protocols,andimplementations,itisnotuncommonforadministratorstoencounterconfigurationissuesthatrequiresophisticatedtroubleshootingandanalysismechanisms.Fortunately,Wiresharkhassophisticatedwirelessprotocolanalysissupporttohelpadministratorstroubleshootwirelessnetworks.Wit

4、htheappropriatedriversup-port,Wiresharkcancapturetraffic“fromtheair”anddecodeitintoaformatthathelpsadministratorstrackdownissuesthatarecausingpoorperformance,intermit-tentconnectivity,andothercommonproblems.Wiresharkisalsoapowerfulwirelesssecurityanalysistool.UsingWireshar

5、k’sdisplayfilteringandprotocoldecoders,youcaneasilysiftthroughlargeamountsofwirelesstraffictoidentifysecurityvulnerabilitiesinthewirelessnetwork,includingweakencryptionorauthenticationmechanisms,andinformationdisclosurerisks.Youcanalsoperformintrusiondetectionanalysistoiden

6、tifycommonattacksagainstwirelessnetworkswhileperformingsignalstrengthanalysistoidentifythelocationofastationoraccesspoint(AP).Thischapterintroducestheuniquechallengesandrecommendationsfortrafficsniffingonwirelessnetworks.Weexaminethedifferentoperatingmodessupportedbywireles

7、scards,andconfigureLinuxandWindowssystemstosupportwirelesstrafficcaptureandanalysisusingWiresharkandthird-partytools.Onceyouhavemas-teredthetaskofcapturingwirelesstraffic,youwilllearnhowtoleverageWireshark’spowerfulwirelessanalysisfeatures,andlearnhowtoapplyyournewskills.Cha

8、llengesofSniffingWirelessTraditionalnetworksniffingonanEthernetnetworkisfairlyeasytosetup.Inashare