understoodwindowsserver

windowsserver  时间:2021-01-19  阅读:()
BlackHat2007WindowsServerVirtualization&WindowsServerVirtualization&TheWindowsHypervisorTheWindowsHypervisorBrandonBakerLeadSecurityEngineerWindowsKernelTeamMicrosoftCorporationBlackHat2007Agenda-WindowsServerVirtualization(WSV)WhyahypervisorQuickBackground&ArchitectureFormoredetails,seepresentationonconferenceCDSecurityCharacteristicsDeploymentConsiderationsFutureDirectionsBlackHat2007WhyahypervisorThin,lowlevelmicrokernelEliminatesringcompressionRunsguestoperatingsystemsw/omodificationAddsdefenseindepthLeveragecurrent&futurehardwareScalabilityBlackHat2007Agenda-WindowsServerVirtualization(WSV)WhyahypervisorQuickBackground&ArchitectureFormoredetails,seepresentationonconferenceCDSecurityCharacteristicsDeploymentConsiderationsFutureDirectionsBlackHat2007WindowsServerVirtualizationBackgroundProjectcodenameViridianFullmachinevirtualizationforguestoperatingsystemsComponentofWindowsServer2008Finalversionavailablewithin180daysofWindowsServer2008RTMInstallsasaroleonServerCoreBlackHat2007WindowsServerVirtualizationBackgroundHasthreemajorcomponents:HypervisorVirtualizationStackVirtualDevicesHypervisorBasedTakesadvantageof(andrequires)processorvirtualizationextensionsSupportedonx64hardwareonly,32/64bitguestsupportBlackHat2007TheOldWayVirtualServerArchitectureWindowsServer2003orWindowsXPKernelVMMKernelVirtualServerServiceIISVirtualServerWebAppProvidedby:Providedby:WindowsWindowsISVISVVirtualServerVirtualServerServerHardwareHostRing1:GuestKernelModeWindows(NT4,2000,2003)VMAdditionsRing0:KernelModeRing3:UserModeGuestApplicationsGuestsDeviceDriversBlackHat2007RootVirtualizationServiceProviders(VSPs)WindowsKernelServerCoreDeviceDriversWindowshypervisorVirtualizationStackVMWorkerProcessesVMServiceWMIProviderGuestPartitionsRing0:KernelModeRing3:UserModeVirtualizationServiceClients(VSCs)OSKernelEnlightenmentsVMBusGuestApplicationsServerHardwareProvidedby:Providedby:WindowsWindowsISVISVViridianViridianTheNewWayWSVArchitecturePartitionBlackHat2007VirtualizationAttacksRootPartitionVirtualizationServiceProviders(VSPs)WindowsKernelServerCoreDeviceDriversVirtualizationStackVMWorkerProcessesVMServiceWMIProviderGuestPartitionsRing0:KernelModeVirtualizationServiceClients(VSCs)EnlightenmentsVMBusServerHardwareProvidedby:Providedby:WindowsWindowsISVISVViridianViridianGuestApplicationsHackersHackersOSKernelRing3:UserModeWindowshypervisorVMBusBlackHat2007HypervisorPartitioningKernelPartitionisisolationboundaryFewvirtualizationfunctions;reliesonvirtualizationstackVerythinlayerofsoftwareMicrokernelHighlyreliableNodevicedriversTwoversions,oneforIntelandoneforAMDDriversrunintherootLeveragethelargebaseofWindowsdriversWell-definedinterfaceAllowotherstocreatesupportfortheirOSesasguestsBlackHat2007RunswithintherootpartitionPortionoftraditionalhypervisorthathasbeenpushedupandouttomakeamicro-hypervisorManagesguestpartitionsHandlesinterceptsEmulatesdevicesVirtualizationStackBlackHat2007Agenda-WindowsServerVirtualization(WSV)WhyahypervisorQuickBackground&ArchitectureFormoredetails,seepresentationonconferenceCDSecurityCharacteristicsDeploymentConsiderationsFutureDirectionsBlackHat2007GuestsareuntrustedRootmustbetrustedbyhypervisor;parentmustbetrustedbychildren.
Codewillruninallavailableprocessormodes,rings,andsegmentsHypercallinterfacewillbewelldocumentedandwidelyavailabletoattackers.
AllhypercallscanbeattemptedbyguestsCandetectyouarerunningonahypervisorWe'llevengiveyoutheversionTheinternaldesignofthehypervisorwillbewellunderstoodSecurityAssumptionsBlackHat2007SecurityGoalsStrongisolationbetweenpartitionsProtectconfidentialityandintegrityofguestdataSeparationUniquehypervisorresourcepoolsperguestSeparateworkerprocessesperguestGuest-to-parentcommunicationsoveruniquechannelsNon-interferenceGuestscannotaffectthecontentsofotherguests,parent,hypervisorGuestcomputationsprotectedfromotherguestsGuest-to-guestcommunicationsnotallowedthroughVMinterfacesBlackHat2007SecurityNon-GoalsThingswedon'tdoinWindowsServerVirtualization*Mitigatehardwarebleed-through(inferenceattacks)MitigatecovertchannelsGuaranteeavailabilityProtectguestsfromtherootProtectthehypervisorfromtherootUtilizetrustedhardwareTPM,DeviceAssignment,DMAprotection,SecureLaunch*atleast,notyetBlackHat2007WSVSecurityHardening(1/2)HypervisorhasseparateaddressspaceGuestaddresses!
=HypervisoraddressesNo3rdpartycodeintheHypervisorLimitednumberofchannelsfromgueststohypervisorNo"IOCTL"-likethingsGuesttoguestcommunicationthroughhypervisorisprohibitedNosharedmemorymappedbetweenguestsGuestsnevertouchrealhardwarei/oBlackHat2007WSVSecurityHardening(2/2)HypervisorbuiltwithStackguardcookies(/GS)HardwareNoeXecute(NX)CodepagesmarkedreadonlyMemoryguardpagesLimitedexceptionhandlingHypervisorbinaryissignedHypervisorandRootgoingthroughSDLThreatmodelingStaticAnalysisFuzztestingPenetrationtestingBlackHat2007HypervisorSecurityModelMemoryPhysicalAddresstoPartitionmapmaintainedbyHvParent/ChildownershipmodelonmemoryCansupersedeaccessrightsinguestpagetables(R,W,X)CPUHardwareguaranteescache®isterisolation,TLBflushing,instructioninterceptionI/OHypervisorenforcesParentpolicyforallguestaccesstoI/OportsWSVv1policyisguestshavenoaccesstorealhardwareHypervisorInterfacePartitionprivilegemodelGuestsaccesstohypercalls,instructions,MSRswithsecurityimpactenforcedbasedonParentpolicyWSVv1policyisguestshavenoaccesstoprivilegedinstructionsBlackHat2007WSVSecurityModelUsesAuthorizationManager(AzMan)FinegrainedauthorizationandaccesscontrolDepartmentandrolebasedSegregatewhocanmanagegroupsofVMsDefinespecificfunctionsforindividualsorrolesStart,stop,create,addhardware,changedriveimageVMadministratorsdon'thavetobeServer2008administratorsGuestresourcesarecontrolledbyperVMconfigurationfilesSharedresourcesareprotectedRead-only(CDISOfile)Copyonwrite(differencingdisks)BlackHat2007TimeVirtualizationThreetypesoftimeCalendartimeAffectedbyDaylightSavingschangesSourceisparent-createdvirtualRTCdeviceMachinetimeUnaffectedbyDaylightSavingschanges5secondsinthefuture,etc.
SourcesPer-VPvirtualizedAPICtimer(periodicorsingle-shot)Fourper-VPSynICtimers(periodicorsingle-shot)Per-partitionconstant-ratemonotonically-increasingreferencecounterSchedulingtimeHowlonghasthisprocessorbeenscheduledBlackHat2007TimeVirtualizationDesignChoiceHowtohandleRDTSCWhenaVirtualProcessor(VP)isintercepted,asingleinstructioncanappeartotakealongtime–namely,thetimeittakestoenterthehypervisor,performactions,andreturntoaguestTSCisrecordedandcanbemodifiedinguestcontrolstructure(VMCS/VMCB)"Allowittoadvancenaturally"JustleaveitaloneBut…AVPcanberescheduledonadifferentLP,whoseTSCcouldbesmallerCan'tallowTSCstojumpbackwardsintime"Modifyittoappearunchanged"OnentryintotheHv,recordguestTSC.
Onreturntoguest,reloadoriginalTSCvalueminussomeamountBut…Neverknowhowlongthereturninstructionwilltake(caches!
)StillobservableatacertaingranularitySomesoftwaredependsonknowingcyclecountsbetweeninstructionblocks(video/audiocodecs)So,weallowittoadvancenaturally,withaguaranteethatitwillneverappeartogobackwardsonagivenVPBlackHat2007Agenda-WindowsServerVirtualization(WSV)WhyahypervisorQuickBackground&ArchitectureFormoredetails,seepresentationonconferenceCDSecurityCharacteristicsDeploymentConsiderationsFutureDirectionsBlackHat2007DeploymentConsiderations(1/2)PatchingthehypervisorWindowsUpdateManaginglotsofvirtualmachinesSystemCenter–VirtualMachineManagerMinimizerisktotheRootPartitionUtilizeServerCoreDon'trunarbitraryapps,nowebsurfingRunyourappsandservicesinguestsConnecttoback-endmanagementnetworkOnlyexposegueststointernettrafficEnableNXandvirtualizationinBIOSBlackHat2007DeploymentConsiderations(2/2)Twovirtualmachinescan'thavethesamedegreeofisolationastwophysicalmachines:InferenceAttacksCovertChannelsNotrecommendedtohosttwoVMsofvastlydifferingtrustlevelsonthesamesysteme.
g.
afront-endwebserverandacertificateserverBlackHat2007Agenda-WindowsServerVirtualization(WSV)WhyahypervisorQuickBackground&ArchitectureFormoredetails,seepresentationonconferenceCDSecurityCharacteristicsDeploymentConsiderationsFutureDirectionsBlackHat2007FutureSecurityBenefitsManytypesofvirtualization(app,OS,machine)eachwithincreasinglevelsofisolation(andoverhead)PowerfultoolforvirusisolationandanalysisImprovedforensiccapabilityforcompromisedoperatingsystemsInvestmentsinOShardeningthroughhypervisorfeaturesPotentialforgreaterintra-OSisolation(e.
g.
Ring0separationofdrivers)VMscanbeleveragedforhostingsecurityappliancesBlackHat2007SecurityChallengesVMtoVMnetworkmonitoringManagingVMOSpatchlevelsLeakageofinformationbetweenpartitionsduetosharedhardwareLargerattacksurfacethanair-gappedmachinesHighavailability–SLAattacksThreatofmalicious,unauthorizedhypervisors(hypervisor-moderootkits)BlackHat2007FutureSecurityWorkSecureLaunchIntelTXTtm(senter)andAMDSVMtm(skinit)Givesmachineownerabilitytocontrolwhatcodecanusering-1PolicyenforcementinhardwaretoblocklaunchofunauthorizedhypervisorsAllowshypervisortoprotectitselfagainsttamperingDMARemappingIntelVT-dandAMDIOMMUGivesguestsgatedaccesstorealhardwareAllowshypervisortoprotectselfagainstDMAattackBlackHat20072007MicrosoftCorporation.
Allrightsreserved.
Thispresentationisforinformationalpurposesonly.
Microsoftmakesnowarranties,expressorimplied,inthissummary.
ConclusionHypervisorskickass.
BetaavailablewithServer2008RTMWewantyourfeedbackhttp://blogs.
technet.
com/virtualization/brandon.
baker@microsoft.
com

HostMem,最新优惠促销,全场75折优惠,大硬盘VPS特价优惠,美国洛杉矶QuadraNet机房,KVM虚拟架构,KVM虚拟架构,2核2G内存240GB SSD,100Mbps带宽,27美元/年

HostMem近日发布了最新的优惠消息,全场云服务器产品一律75折优惠,美国洛杉矶QuadraNet机房,基于KVM虚拟架构,2核心2G内存240G SSD固态硬盘100Mbps带宽4TB流量,27美元/年,线路方面电信CN2 GT,联通CU移动CM,有需要美国大硬盘VPS云服务器的朋友可以关注一下。HostMem怎么样?HostMem服务器好不好?HostMem值不值得购买?HostMem是一家...

腾讯云CVM云服务器大硬盘方案400GB和800GB数据盘方案

最近看到群里的不少网友在搭建大数据内容网站,内容量有百万篇幅,包括图片可能有超过50GB,如果一台服务器有需要多个站点的话,那肯定默认的服务器50GB存储空间是不够用的。如果单独在购买数据盘会成本提高不少。这里我们看到腾讯云促销活动中有2款带大数据盘的套餐还是比较实惠的,一台是400GB数据盘,一台是800GB数据盘,适合他们的大数据网站。 直达链接 - 腾讯云 大数据盘套餐服务器这里我们看到当前...

RackNerd 黑色星期五5款年付套餐

RackNerd 商家从2019年上线以来争议也是比较大的,一直低价促销很多网友都认为坚持时间不长可能会跑路。不过,目前看到RackNerd还是在坚持且这次黑五活动也有发布,且活动促销也是比较多的,不过对于我们用户来说选择这些低价服务商尽量的不要将长远项目放在上面,低价年付套餐服务商一般都是用来临时业务的。RackNerd商家这次发布黑五促销活动,一共有五款年付套餐,涉及到多个机房。最低年付的套餐...

windowsserver为你推荐
国际域名国内域名和国际域名的区别美国vps服务器打听下,国外V P S服务器哪个好?me域名注册me 域名 还能备案吗独立ip主机有用过独立IP主机吗免费云主机免费云主机哪家好?免费网站域名申请怎么免费上传我的网站呀和免费申请域名香港虚拟空间最好的香港虚拟主机是哪家?虚拟空间哪个好国内哪个空间商(虚拟主机)最好网站空间购买网站空间购买注意事项重庆网站空间重庆有没有发展空间?
vps交流 华为云服务 pccw 天猫双十一抢红包 七夕快乐英文 服务器维护方案 免费美国空间 raid10 web服务器搭建 web服务器是什么 台湾google lick 西安主机 阿里云邮箱登陆地址 中国联通宽带测速 腾讯云平台 什么是dns magento主机 wannacry勒索病毒 dmz主机 更多