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ID:33320655
大小:1.70 MB
页数:56页
时间:2019-02-24
《网格环境下数据管理及安全问题研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、中国科学技术大学硕士论文AbstractWiththedevelopmentofGridtechnology,scientificdatahaveatendencyofexplosiveincrease,however,theaccesstoandanalysisofthesedatabygeographicallydistributedusersarerestrictedduetothecomplexityandintensityofcomputation.Withcurrentdatamanagementarchitectu
2、res,solutionsandtechnology,serviceprovidersfailtomeetusers’requirementsuchashighperformance.distributedstorageandprocess.Whatismore.theuniquecharacteristicofGridenvironmenthascausedmanysecurityproblems.whileimDedethefurtherdevelopmentandpopularizationofGridtechnology
3、,thusrenderthesecurityproblemtothefoCUSofresearchers’attentioninGridcomputationsystem.msthesisfirstlyintroducesthebasicpointssuchasthedefinitionandcharacteristicsofGrid,itsarchitectureandtwosupportingtechnology--webserviceandGlobus,andthemostwidelyuseddevelopingtoolk
4、itGlobusToolkit,basingonwhichitproposesthedatastoragemodelinGrids.Forfilereplicamanagement,itemploystheOGSAGridservice,whichisastandardGridservice,hasuniforlndataaccessinterfaceandisintegratedwithdatatransferservice.Furthermore.thisPa口erhasdesignedandimplementedaserv
5、ice—odentedGridPortalwhichsuccessfullyintegratestheabovementionedservices.AsforGridsecurity,firstofall,somerelevanttechnologiesarepresented,andspeciallyintroducedistheGSI,whosefunctions,securitystrategies,characteristicanddisadvantagearediscussedindetail.Toensurethea
6、ll—roundsecurityofGridenvironment,wealsoanalyzetheintrusiondetectionmethods,proposealayeredcooperationintmsiondetectionmodelanddisposeit.OtitschemeutilizestheGriddatamanagementtechnologyfordatamanagementandtransfer,extendsthemessageexchangeformatofIDMEFtorealizetheco
7、mpatibility,sharingandcooperationamongthesubassemblyofIDS,andaddsadesignofthemessageformatbetweenanalyzersthuseffectivelyhelpⅡ>MEFtodepictthecontrollingmessagebetweenanalyzersanddoctors.Performanceanalysesindicatethatourmodeliseasytodispose.widelyapplicable,freeofbot
8、tleneckproblemcausedbycenter-controller,robustagainstattachandisquitefittingtotheGridenvironment.andEⅡ)MEFperfectlymeetsthedesignre
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