信息系统的项目监理

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1、ObjectivesUponcompletionofthischapter,youwillbeabletoperformthefollowingtasks:IdentifythekeyfunctionsandspecialprocessingofIPaccesslistsConfigurestandardIPaccesslistsControlvirtualterminalaccesswithaccessclassConfigureextendedIPaccesslistsVerifyandmonitorIPa

2、ccesslistsManageIPTrafficasnetworkaccessgrowsWhyUseAccessLists?172.16.0.0172.17.0.0InternetManageIPtrafficasnetworkaccessgrowsFilterpacketsastheypassthroughtherouterWhyUseAccessLists?AccessListApplicationsPermitordenypacketsmovingthroughtherouterPermitordeny

3、vtyaccesstoorfromtherouterWithoutaccesslistsallpacketscouldbetransmittedontoallpartsofyournetworkVirtualterminallineaccess(IP)TransmissionofpacketsonaninterfaceQueueListPriorityandcustomqueuingOtherAccessListUsesSpecialhandlingfortrafficbasedonpackettestsQu

4、eueListPriorityandcustomqueuingOtherAccessListUsesDial-on-demandroutingSpecialhandlingfortrafficbasedonpackettestsOtherAccessListUsesRoutefilteringRoutingTableQueueListPriorityandcustomqueuingDial-on-demandroutingSpecialhandlingfortrafficbasedonpackettest

5、sWhatAreAccessLists?StandardChecksSourceaddressGenerallypermitsordeniesentireprotocolsuiteOutgoingPacketE0S0IncomingPacketAccessListProcessesPermit?SourceWhatAreAccessLists?StandardChecksSourceaddressGenerallypermitsordeniesentireprotocolsuiteExtendedChecksS

6、ourceandDestinationaddressGenerallypermitsordeniesspecificprotocolsOutgoingPacketE0S0IncomingPacketAccessListProcessesPermit?SourceandDestinationProtocolStandardChecksSourceaddressGenerallypermitsordeniesentireprotocolsuiteExtendedChecksSourceandDestination

7、addressGenerallypermitsordeniesspecificprotocolsInboundorOutboundWhatAreAccessLists?OutgoingPacketE0S0IncomingPacketAccessListProcessesPermit?SourceandDestinationProtocolInboundInterfacePacketsNYPacketDiscardBucketChooseInterfaceNAccessList?RoutingTableE

8、ntry?YOutboundInterfacesPacketS0OutboundAccessListsOutboundInterfacesPacketNYPacketDiscardBucketChooseInterfaceRoutingTableEntry?NPacketTestAccessListStatementsPermit?YOutboundAccessListsAcc