flexible flow aggregation for adaptive network monitoring

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1、FlexibleFlowAggregationforAdaptiveNetworkMonitoringFalkoDresslerGerhardMunz¨AutonomicNetworkingGroupComputerNetworksandInternetDept.ofComputerScience7WilhelmSchickardInstituteforComputerScienceUniversityofErlangen,GermanyUniversityofTubingen,Germany¨dressl

2、er@informatik.uni-erlangen.demuenz@informatik.uni-tuebingen.deAbstracttacks,propagatingwormsetc[10].Whiletheaforemen-tionedapplicationsarestillrelevant,otherdomainsalsore-Networkmonitoringisamajorbuildingblockformanyquireappropriatenetworkmonitoringsuchasi

3、ntrusionde-domainsincommunicationnetworks.Besidestypicalac-tectionandtracebackmechanisms[13]orchargingapplica-countingmechanismsandtheemergingareaofchargingintionsfornextgenerationnetworks[7].Manufacturershavenextgenerationnetworks,especiallynetworksecurit

4、ysolu-respondedbydevelopingspecificmonitoringdevicesorbytionsrelyonefficientandoptimizedmonitoring.Networkaddingmonitoringfunctionalityintoexistingproductslikemonitoringinhigh-speednetworksisusuallybasedonflowroutersorfirewalls.accountingandaggregationtechniqu

5、esrepresentaneces-Acommonmonitoringtechniqueisflowaccounting.saryenhancementinordertocopewithincreasingamountsThekeyideaofflowaccountingistostoreinformationofmonitoringdatathataccruewiththeever-growingnet-aboutpacketflowsandthecorrespondingstatisticsinsteadwo

6、rkcapacities.Inthispaper,weproposeaflexibleflowofindividualpacketinformation.Inthiscontext,aflowisaggregationmechanismthatcanbedirectlyemployedondefinedasaunidirectionalstreamofIPpacketsidentifiedbyamonitoringprobetoreducethememoryandprocessingacommonIP-five-tup

7、le(protocoltype,sourceIPaddress,demands.Alternatively,itcanworkasaconcentratorthatdestinationIPaddress,sourceport,destinationport).Tocollectsflowdatafrommultiplemonitoringprobes,com-thisend,asinglemeasurementrecordcancontaininforma-binesandaggregatesthemand

8、forwardstheresultstoantiononuptoseveralthousandpackets.Fortransmissionofanalyzer.Weverifiedandevaluatedtheaggregationmech-monitoringdatatoaremoteanalyzer,aseriesofprotocolsanismbyintegratingitintoourmonitoring