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1、DistributedInstrusionPreventioninActiveandExtensibleNetworksToddSproullandJohnLockwood?AppliedResearchLaboratoryDepartmentofComputerScienceandEngineering:WashingtonUniversityinSaintLouis1BrookingsDrive,CampusBox1045St.Louis,MO63130USAhttp://www.arl.wustl.edu/arl/projects/f
2、px/reconfig.htmAbstract.TheproliferationofcomputervirusesandInternetwormshashadamajorimpactontheInternetCommunity.Cleanupandcontrolofmalicioussoftware(malware)hasbecomeakeyproblemfornetworkadministrators.E ectivetechniquesarenowneededtoprotectnetworksagainstoutbreaksofmalw
3、are.Wire-speed rewallshavebeenwidelyde-ployedtolimitthe
owoftracfromuntrusteddomains.Butthesedevicesweaknessresidesinalimitedabilitytoprotectnetworksfrominfectedmachinesonotherwisetrustednetworks.ProgressivenetworkadministratorshavebeenusinganIntrusionPre-ventionSystem(IP
4、S)toactivelyblockthe
owofmalicioustrac.Newtypesofactiveandextensiblenetworksystemsthatusebothmicro-processorsandrecon gurablelogiccanperformwire-speedservicesinordertoprotectnetworksagainstcomputervirusandInternetwormpropagation.Thispaperdiscussesascalablesystemthatmakesu
5、seofautomatedwormdetectionandintrusionpreventiontostopthespreadofcomputervirusesandInternetwormsusingextensiblehardwarecom-ponentsdistributedthroughoutanetwork.Thecontributionofthisworkistopresenthowtomanageandcon gurelargenumbersofdistributedandextensibleIPSs.1Introductio
6、nSecurityhasbecomeadauntingtaskfornetworkadministrators.Therearenu-merousvulnerabilitiesthata ectthemillionsofcomputersattachedtotheIn-ternet.Networkadministratorsareoverwhelmedbythetaskofsecuringtheirnetworksagainstoperatingsystem
aws,poorlywrittennetworkapplications,ande
7、nd-systemmiscon gurations.Securitydevicesintegratedwithinthenet-workhavebecomeanecessityfornetworksthatneedtobesafeandreliable.?ThisresearchwassupportedbyagrantfromGlobalVelocity.TheauthorsofthispaperhavereceivedequityfromthelicenseoftechnologytoGlobalVelocity,andhaveserve
8、dasconsultantstothecompany.Networkadministratorscurrentlyuseseveraltypesofdevicestosecure
