forefrontserversecuritybusinessvaluewhitepaperWord下载.docx
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Published:
October2006
Abstract
MicrosofthasexpandeditssecuritystrategybyaddingproductsandtechnologiesthataddressthemostpressingneedsofITmanagementandadministration.TheMicrosoftForefrontlineofsecurityproductsincludesanti-virusandcontentfilteringtoolsforMicrosoftExchangeServerandSharePointproductsandtechnologies.ThroughtightintegrationwithExchangeandSharePoint,Microsoft®
Forefront™SecurityforExchangeServerandMicrosoft®
Forefront™SecurityforSharePoint®
offeranumberofvaluablebenefits,includingimprovedmanageability,performance,andsecurity.Thispaperdescribesthesebenefitsatahighlevel.
TheinformationcontainedinthisdocumentrepresentsthecurrentviewofMicrosoftCorporationontheissuesdiscussedasofthedateofpublication.BecauseMicrosoftmustrespondtochangingmarketconditions,itshouldnotbeinterpretedtobeacommitmentonthepartofMicrosoft,andMicrosoftcannotguaranteetheaccuracyofanyinformationpresentedafterthedateofpublication.
ThisWhitePaperisforinformationalpurposesonly.MICROSOFTMAKESNOWARRANTIES,EXPRESS,IMPLIEDORSTATUTORY,ASTOTHEINFORMATIONINTHISDOCUMENT.
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2006MicrosoftCorporation.Allrightsreserved.
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Contents
Communications,Collaboration,andSecurity1
DefendingYourCommunicationsandCollaborationInfrastructure3
TheThreatLandscape3
SpecificThreatsagainstExchangeandOutlook3
ThreatsSpecifictoSharePoint4
MeetingtheThreat:
HowForefrontServerSecurityHelps4
BetterProtection5
ImprovedPerformanceandAvailability5
LayeredDefenses6
ConsistentApplicationofSecurityPolicies6
Conclusion8
RelatedLinks9
Communications,Collaboration,andSecurity
Companiesofallsizesaremovingawayfromafocusonindividualproductsorpointsolutionsthatdeliverspecificserviceslikee-mail,instantmessaging,ordocumentmanagement.Instead,drivenbycompetitivepressuresthatplaceahighpremiumoneffective,timelycommunicationandcollaboration,they’rechoosingsolutionsbasedonhowwelldifferentcollaborationandcommunicationsproductsandprotocolsworktogether.Microsofthasbeeninvestingheavilyinitscollaborationandcommunicationssolutionline,whichcontainsthreemajorcomponentsthatareinterestingfromasecuritystandpoint.
ExchangeServerisMicrosoft’smessagingandcalendaringplatform.ExchangeisboththemostmatureandthemostwidelydeployedofMicrosoft’scollaborationandcommunicationproducts.Itactsasthekeyrepositoryforvoicemail,e-mail,andfaxmessages,calendarandfree/busydata,andcontactinformation,anditmakesthatdataaccessiblethroughdesktop,Web-based,andmobileclients.
SharePointproductsandtechnologiesincludeMicrosoftOfficeSharePointServer2007,Windows®
SharePointServices,andSharePointPortalServer2003.MicrosoftintendsSharePointtobeacentraldocumentandinformationrepository,combiningrichmetadata,searchingofbothSharePointrepositoriesandotherdatasources(includingLotusDominodatabases,Webcontent,andfileshares),workflow,andelectroniccontentmanagement.
LiveCommunicationsServercomplementsSharePointandExchangebyofferingreal-timecommunications,includingtext,voice,andvideoinstantmessaging,applicationanddesktopsharing,webconferencing,andextendedpresenceinformation.ThesecapabilitiesareavailablefromthedesktopviatheWindowsMessengerandOfficeCommunicatorclients,theCommunicatorWebAccessWeb-basedclient,CommunicatorMobileforWindowsMobile,andAPIsthatallowpresenceandIMcapabilitytobebuiltintoSharePointteamsitesanddocumentlibraries,aswellasapplicationsintheOfficefamily.
Microsoft’sstrategyinthisspaceistobuildacompletesetofunifiedcollaborationandcommunicationssolutionsthatprovideeasyaccesstoawiderangeofworkmodes—instantmessaging,e-mail,calendaring,teamworkspaces,documentlibraries—allusingafamiliarsetoftoolsthatletpeopleworkwithoutdisruptionfromthedesktoporonthego.Thesesolutionsarebasedon,andtakeadvantageof,infrastructureserviceslikeActiveDirectoryandWindowsRightsManagementServices.
Fortheseservicesandcapabilitiestobetrulyusefulinbusiness,theymustbeproperlysecured.Eachoftheseproductfamiliesincludesawiderangeofsecurityfeatures,includingencryption,authentication,andauditing.However,buildinganeffectivecommunicationsandcollaborationsystemdependsonprotectionofthesystemitselfandthedataitcontains.Overthelasttwoyears,Microsofthassteadilybeenaddingdata-centricsecurityfunctionality,beefingupthemessagesecuritycapabilitiesofExchange2007,addingbuilt-insupportforWindowsRightsManagementServicesintoMicrosoftOfficeSharePointServer2007,andpurchasingseveralsecuritycompanieswhoseproductsfillgapsinMicrosoft’sownofferings.
Microsoft’soverallsecuritystrategyistoprovideend-to-endsecurityforbusinesscustomers,beginningwiththeoperatingsystemandextendingthroughnetworkaccesstoapplicationsandserviceshostedonWindowsservers.Thisend-to-endprotectionmetaphorisabroadvisionthatwilltakesometimetoexecute;
therecentlylaunchedForefrontproductlineisamajorpartofMicrosoft’scommitmenttorealizingthisvisionbyprovidingsolidsecurityandmanagementservicesforitscollaborationandcommunicationsservices.ForefrontSecurityforExchangeServer,ForefrontSecurityforSharePoint,andMicrosoft®
Forefront™SecurityforOfficeCommunicationsServerhelpprovideadvancedprotectionforthevaluabledatatransmittedandstoredinmailboxes,documentlibraries,andteamsites.TheseproductsintegratewithexistingMicrosoftmanagementtools,sothey’reeasytolearn,use,anddeploy.TheseForefrontproductsarenewiterationsoftheprovenandmatureSybariAntigenproductsthatMicrosoftacquiredin2005.
DefendingYourCommunicationsandCollaborationInfrastructure
Thefirststepinmountinganeffectivedefenseofyourcollaborationandcommunicationsinfrastructureistousethesecuritytoolsthattheplatformprovides.Forexample,WindowsServersupportsauthentication,authorization,confidentialityprotection,andsecurityupdatemanagementmechanismsthatallowyoutoeffectivelysecuretheunderlyingnetwork,workstations,andservers.ActiveDirectoryaddsarobustauthenticationmechanismthatallowsyoutoeffectivelysegregatecriticalsystemsandapplydifferentlevelsofsecuritypolicytothem;
ExchangeandSharePointbothincludeadditionalsecuritymechanismsthat,whenproperlyused,helpmaintainsecurityattheserverlevel.Thesemeasuresarenecessaryprerequisitesthathelpprotecttheorganization’sdata,butmanyorganizationswantahigherdegreeofprotectionthatsafeguardstheircriticalresourcebyprotectingagainstawidervarietyofthreats.
TheThreatLandscape
Thesecuritylandscapeiscontinuallychanging;
attackersarealwaysseekingnewvulnerabilitiesinsoftwaresystemsandnetworks.Manycommonthreatsofthepast,likedenial-of-serviceattacksbasedonfragmentedTCPpackets,havelargelybeenmitigated.Theemergenceanddeploymentofsecuritycapabilitieslikenetworkaccessprotectionandsmartcardauthenticationhavehelpedtodelivermoresecurenetworkaccess,andMicrosoft’ssustainedeffortstodeliver“trustworthycomputing”arebearingfruitbyreducingthenumberandseverityofvulnerabilitiesintheirproducts.
However,attackershaven’tbeensittingstill.Attacksbasedonmalware—looselydefinedasviruses,worms,Trojans,andspyware—arecontinuingtogrowinbothfrequencyandseverity.Malwarehasbecomeeasiertocatchbuthardertogetridof;
agrowingnumberofrootkits,onceinstalled,caneffectivelydisguisethemselvesfrommostmajoranti-malwaretoolsTheattackersthemselveshavechanged;
inthepast,itwascommontoseevirusesorwormsdevelopedbyinterestedamateurs,buttoday’sattacksareoftenconductedbyprofessionalswhoeithertargetindividualorganizationsorcompromisegroupsofcomputersandsellaccesstothem.Thereareothermotivations,too;
anincreasingnumberofattacksarebeingundertakenforinformationgathering,industrialorpoliticalespionage,orideologicalmotivations.
SpecificThreatsagainstExchangeandOutlook
MicrosofthassteadilyimprovedthesecurityofExchangeServeranditspremie
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