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1、DetectingMaliciousNodesinPeer-to-PeerStreamingbyPeer-BasedMonitoringXINGJIN9OracleUSA,Inc.andS.-H.GARYCHANTheHongKongUniversityofScienceandTechnologyCurrentpeer-to-peer(P2P)streamingsystemsoftenassumethatnodescooperatetouploadanddownloaddata.However,intheope
2、nenvironmentoftheInternet,thisisnotnecessarilytrueandthereexistmaliciousnodesinthesystem.Inthisarticle,westudymaliciousactionsofnodesthatcanbedetectedthroughpeer-basedmonitoring.Werequireeachnodetomonitorthedatareceivedandtoperiodicallysendmonitoringmessages
3、aboutitsneighborstosometrustworthynodes.Toefficientlystoreandsearchmessagesamongmultipletrustworthynodes,weorganizetrustworthynodesintoathreadedbinarytree.Trustworthynodesalsodynamicallyredistributemonitoringmessagesamongthemselvestoachieveloadbalancing.Oursi
4、mulationresultsshowthatthisschemecanefficientlydetectmaliciousnodeswithhighaccuracy,andthatthedynamicredistributionmethodcanachievegoodloadbalancingamongtrustworthynodes.CategoriesandSubjectDescriptors:C.2.0[Computer-CommunicationNetworks]:General—Datacommuni
5、cations;H.3.3[InformationStorageandRetrieval]:InformationSearchandRetrieval—Retrievalmodels;searchprocessGeneralTerms:Performance,DesignAdditionalKeyWordsandPhrases:Maliciousnodes,peermonitoring,peer-to-peerstreamingACMReferenceFormat:Jin,X.andChan,S.-H.G.20
6、10.Detectingmaliciousnodesinpeer-to-peerstreamingbypeer-basedmonitoring.ACMTrans.MultimediaComput.Commun.Appl.6,2,Article9(March2010),18pages.DOI=10.1145/1671962.1671965http://doi.acm.org/10.1145/1671962.16719651.INTRODUCTIONWiththepopularityofbroadbandInter
7、netaccess,therehasbeenincreasinginterestinmediastream-ing.Recently,peer-to-peer(P2P)streaminghasemergedtoovercomelimitationsintraditionalserver-basedstreaming.InP2Pstreaming,cooperativepeersself-organizethemselvesintooverlaynetworksThisworkwassupportedinpart
8、bytheGeneralResearchFundfromtheResearchGrantCounciloftheHongKongSpecialAdministrativeRegion,China(611107),theCiscoUniversityResearchProgramFund,acorporate-advisedfundofSiliconValleyCommunityFoun