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1、上海交通大学硕士学位论文综合网络安全风险等级计算模型的研究与实现姓名：周楠申请学位级别：硕士专业：通信与信息系统指导教师：李生红20071101AbstractAtpresent,theInternethasenteredintoeverycornerofoursociallife.Forindividuals,itchangedtheirlifestyles.Forenterprises,itchangedtheirtraditionalbusinessmodelsandinternalmanagementsystems.Buteve
2、rythinghastwosides.Whilebringinguslotsofconvenience,ithascreatedahostofsecurityheadaches.WhentheInternetwasdesignedatfirst,onlycompatibilityandinteroperabilityhasbeentakenintoconsideration,whereastheconsequentsecurityproblemsweretotallyneglected.Asaresult,moreandmoresecu
3、rityproblemsemergedastheInternetdeveloped.TheriseofnewservicesontheInternetsuchase-commerce,e-currencyandonlinebankingdemandsbetterInternetsecurity.Buttherealityisthathackingeventstakeplaceoneafteranother,ringingalarmandposingseverechallengestotheInternetsecurityinChina.
4、HowtoevaluatesecurityriskrankofNetworkisbecomingaveryimportantproblem.Bringfowardacalculationmodelofintegratednetworksecurityriskrank,basedonsecuritytechnologysystem,securitystrategysystem,securityorganizingsystemandsecurityactionsysteminnetwork,afterthestudyofthedevelop
5、mentofpresentnetworksecutiyandtheexistentcalculationmodelofnetworksecurityriskrank.Whenitcomestothecalculationmodelofsecuritytechnologysystem,themodelevaluatesthenetworklayer,systemlayerandapplicationlayerthroughttheintegrality,secrecyabilityandusabilityofinfomationsyste
6、m.Andreferstoakindofinformationsecurityriskevaluationmethod,basedonUML,ATAandETA,whichcanenhancetheaccuracyandobjectivityofriskevaluation.Whenitcomestothecalculationmodelofsecuritystrategysystem,securityorganizingsystemandsecurityactionsystem,themodelisbasedonthedraw-out
7、evaluationfactors.Themodelestablishesasecurityarrayandsubdividedsecondrankevaluationparameters,andclassifiesthenetworksecuritybyweightcalculationaccordingtotheimportanceoftheevaluationmodule,andthenclassifiesthenetworksecuritybyworkingoutproportionofthenetworksecurityran
8、kaccordingtotheevaluationprobabilityofsubdividedsecurityeventsintheinformationsystem.Themodelisputforwa
