资源描述：
《A Framework for Wireless LAN Monitoring and Its Applications》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、AFrameworkforWirelessLANMonitoringandItsApplications∗JihwangYeo,MoustafaYoussef,AshokAgrawalaDepartmentofComputerScience,UniversityofMarylandCollegePark,MD20742{jyeo,moustafa,agrawala}@cs.umd.eduABSTRACTManystudiesonmeasurementandcharacterizationofwirelessLANs(WLANs)havebeenperformedrece
2、ntly.Mostofthesemeasure-WANmentshavebeenconductedfromthewiredportionofthenetworkbasedonwiredmonitoring(e.g.snifferatsomewiredpoint)orWirelessAccessSNMPstatistics.Morerecently,wirelessmonitoring,thetrafficMonitoringPointLANEthernetmeasurementfromawirelessvantagepoint,isalsowidelyadoptedinb
3、othwirelessresearchandcommercialWLANmanagementprod-uctdevelopment.Wirelessmonitoringtechniquecanprovidede-AccesstailedPHY/MACinformationonwirelessmedium.Forthenet-Pointworkdiagnosispurpose(e.g.anomalydetectionandsecuritymon-itoring)suchdetailedwirelessinformationismoreusefulthantheinform
4、ationprovidedbySNMPorwiredmonitoring.Inthispa-SNMPperwehaveexploredvariousissuesinimplementingthewirelessQuerymonitoringsystemforanIEEE802.11basedwirelessnetwork.Weidentifythepitfallsthatsuchsystemneedstobeawareof,andthenprovidefeasiblesolutionstoavoidthosepitfalls.Weim-CollectingWiredpl
5、ementanactualwirelessmonitoringsystemanddemonstrateitsSNMPDataMonitoringeffectivenessbycharacterizingatypicalcomputersciencedepart-mentWLANtraffic.OurcharacterizationrevealsrichinformationFigure1:MonitoringWirelessTraffic:fromawiredvantageaboutthePHY/MAClayersoftheIEEE802.11protocolsuchasp
6、oint,awirelessvantagepoint,andSNMPstatistics.thetypicaltrafficmixofdifferentframetypes,theirtemporalchar-acteristicsandcorrelationwiththeuseractivities.Moreover,weidentifyvariousanomaliesinprotocolandsecurityoftheIEEE802.11MAC.Regardingthesecurity,weidentifymalicioususagesKeywords:Wireles
7、sLAN,WirelessMonitoring,Security,Anomaly,ofWLAN,suchasemailwormandnetworkscanning.OurresultsTrafficCharacterizationalsoshowexcessiveretransmissionsofsomemanagementframetypesreducingtheusefulthroughputofthewirelessnetwork.1.INTRODUCTIONCategoriesandSubjectDescriptors:C.2.0[
