grids and private networks are antithetical

《grids and private networks are antithetical》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、GridsandPrivateNetworksareAntitheticalAndrewMartin∗andCarlCook†TechnialReportTR-04/04,June2004Thecontentsofthisworkreflecttheviewsoftheauthorswhoareresponsibleforthefactsandaccuracyofthedatapresented.Responsibilityfortheapplicationofthema-terialtospecificcases,h

2、owever,lieswithanyuserofthereportandnoresponsibilityinsuchcaseswillbeattributedtotheauthorortotheUniversityofCanterbury.Thistechnicalreportcontainsaresearchpaper,devel-opmentreport,ortutorialarticlewhichhasbeensubmittedforpublicationinajournalorforconsideratio

3、nbythecom-missioningorganisation.Weaskyoutorespectthecurrentandfutureownerofthecopyrightbykeepingcopyingofthisarticletotheessentialminimum.Anyrequestsforfurthercopiesshouldbesenttotheauthor.AbstractAchievementofsuitablesecurityinGridsisahardandmulti-facetedpro

4、blem.ThedeploymentofGridsoverVirtualPrivateNetworks(VPNs)hasbeenproposedasa(partial)solution.WedrawontheexperienceoftheUKe-Scienceprogramme,thePlanetLabproject,andtheNewZealandGridexperiencetoshowthatthereisasignificantmismatchbetweenthecapabilitiesofferedbyVPNs

5、andthepropertiesrequiredbyGrids.Moreover,wearguethatbygivingattentiontoGridsimplementedinprivatenetworks,certainsecurityissuesmaybeoverlookedfortoolong.∗OxfordUniversitySoftwareEngineeringCentre†DepartmentofComputerScienceandSoftwareEngineering,UniversityofCan

6、terbury1IntroductionThenotionofaGrid(FosterandKesselman,1999)hasgainedpopularityasametaphorandguidingprincipleforsystemarchitecturesdesignedtopermitlarge-scaleresourcesharingacrosswidespreadheterogeneouscollectionsofsys-tems.Animportantfeatureisthenotionofadyn

7、amicVirtualOrganisation(VO)inwhichacollectionofindividualsororganisationsshareresourcesinanadhocwayforaperiodoftime,withminimaleffortrequiredtosetuporfinalizetheorganisation.Ithasbeenclearthatcarefulconsiderationofsecurityissuesiscentraltothesuccessfuldeployment

8、ofGrids.Potentialresourceproviderswillbereluctanttoparticipateifthepossibilityofmisuseoftheirresourceistoogreat;potentialcustomerswillnotuseGridservicesiftheycannotachieveanadequat