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1、MulticastreceiveraccesscontrolbyIGMP-AC  OriginalResearchArticleComputerNetworksIPmulticastisbest-knownforitsbandwidthconservationandlowerresourceutilization.ThepresentservicemodelofmulticastmakesitdifficulttorestrictaccesstoauthorizedEndUsers(EUs)orpayingcustomers.Withoutanef

2、fectivereceiveraccesscontrol,anadversarymayexploittheexistingIPmulticastmodel,whereahostorEUcanjoinanymulticastgroupbysendinganInternetGroupManagementProtocol(IGMP)joinmessagewithoutpriorauthenticationandauthorization.Wehavedevelopedanovel,scalableandsecuredaccesscontrolarchit

3、ectureforIPmulticastthatdeploysAuthenticationAuthorizationandAccounting(AAA)protocolstocontrolgroupmembership.Theprincipalfeatureoftheaccesscontrolarchitecture,receiveraccesscontrol,isaddressedinthispaper.TheEUorhostinformsthemulticastAccessRouter(AR)ofitsinterestinreceivingmu

4、lticasttrafficusingtheIGMPprotocol.WeproposethenecessaryextensionsofIGMPv3tocarryAAAinformation,calledIGMPwithAccessControl(IGMP-AC).ForEUauthentication,IGMP-ACencapsulatesExtensibleAuthenticationProtocol(EAP)packets.EAPisanauthenticationframeworktoprovidesomecommonfunctionsan

5、danegotiationofthedesiredauthenticationmechanism.Thus,IGMP-ACcansupportavarietyofauthenticationsbyencapsulatingdifferentEAPmethods.Furthermore,wehavemodeledtheIGMP-ACprotocolinPROMELA,andalsoverifiedthemodelusingSPIN.WehaveillustratedtheEAPencapsulationmethodwithanexampleEAPme

6、thod,EAPInternetKeyExchange(EAP-IKEv2).WehaveusedAVISPAtovalidatethesecuritypropertiesoftheEAP-IKEv2methodinpass-throughmode,whichfitswithintheIGMP-ACarchitecture.Finally,wehaveextendedourpreviouslydevelopedaccesscontrolarchitecturetoaccomplishinter-domainreceiveraccesscontrol

7、anddemonstratedtheapplicabilityofIGMP-ACinamulti-domainenvironment.ArticleOutline1.Introduction2.Backgroundwork2.1.InternetGroupManagementProtocol(IGMP)2.2.AAAprotocols2.3.Accesscontrolarchitecturewithe-commercecommunication2.3.1.Participantaccesscontrol2.3.2.e-Commercecommuni

8、cation2.3.3.Policyenforcement2.3.4.Limitationofthearchitectur