problem statement

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1、DataMining40DataMiningApproachesforNetworkIntrusionDetectionFinalReport11/9/2006Group9KarlaBracamonteJeffreyGawlinskiJordanHarstadOmarRodriguezMichaelWrightDataMining40AbstractOverthepastyears,muchinteresthasbeenshowsindataminingtodetectnetworkintrusions.Thispaperprovides

2、methodologyandthoughprocesswithinthediscussedtask.Baseduponexperiencesinsuchafield,dataminingtechniquesarefurthersuggestedandwillvaryuponexpertiseandnetworkinfrastructure.Thispaperisintendedfortheusebycomputerandnetworksecurityprofessionalswhowishtostudyandlearnmoreaboutt

3、hescienceofdatamining,aswellasresearchwaysexpertsusecurrentdataminingmaterialaswaystofurthertheirknowledgeinintrusiondetection.DataMining40ProblemStatementThegoalofIntrusionDetectionSystems(IDS)istodetectanintrusionasithappensandbeabletorespondtoit.Aprimaryconcernwhenimpl

4、ementingIDS,especiallyintheformofDataMiningistheresultof“falsepositives.”Afalsepositivecouldbeasituationwheresomethingabnormaloccurs,butisnotnecessarilyanintrusion.AhighpercentageoffalsepositivesmayrenderanIDSuselessandcauseuserrevolts.Anotherproblemisthatof“falsenegative

5、s”,inwhichanintrusionisactuallyoccurringbutitgoesundetectedbyIDSorIDSmisclassifiestheevent.ChallengesandMotivationConsequently,challengesmaypotentiallyarisewithinallintrusiondetectionmethods,especiallythatofdatamining.Thebroaderfieldofthesechallengesisreferredtoas“threata

6、nalysis”andthedefinitionofwhatitentails.Thus,theunderlyingneedthatmotivatessuchresearchistoprovidereliabilitytothosecompaniesandorganizationsthatdependondata.Bestdefined,threatanalysisisthestudyofknownandunknownpatterns,whichanalyzecertaindatatrafficpathsandtheirfollowing

7、characteristics.Statisticalandinformationstateresearchonanythingfromneighborhoodsandtheirdemographicscanbealsoincludedwithinthreatanalysis,thusmakingthecharacterizationprocessforintrusiondetectionquitebroadanddifficult.Oneofthebestmethodsinprovidingreliabilityofalldatatha

8、tistrackedistoreducefalsepositivesanderrors,whileincreasingconsumerconfidenceindatamanagementpro