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时间:2018-10-13
《基于信息融合的网络安全态势评估模型.pdf》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、万方数据计算机研究与发展ISSN1000-12391CN11—1777/TPJournalofComputerResearchandDevelopment46(3):353—362,2009基于信息融合的网络安全态势评估模型韦勇连一峰冯登国(中国科学技术大学电子工程与信息科学系合肥230027)(中国科学院软件研究所信息安全国家重点实验室北京100190)(weiyong@is.iscas.ac.cn)ANetworkSecuritySituationalAwarenessModelBasedonInformationFusion
2、WeiYong,LianYifeng,andFengDengguo(DepartmentofElectronicEngineeringandInformationScience,UniversityofScienceandTechnologyofChina,Hefei230027)(StateKeyLaboratoryofInformationSecurity,InstituteofSoftzvare,ChineseAcademyofSciences,Beijing100190)AbstractSecuritysituationa
3、lawarenesshasbecomeahottopicintheareaofnetworksecurityresearchinrecentyears,whichattractstheinterestofmoreandmoredomesticandforeignresearchers.Theexistingsecuritysituationalawarenessmethodsareanalyzedandcomparedindetail.Consideringthecharacteristicsofmulti—sourceinfor
4、mationinnetworksecurityresearch.anewnetworksecuritysituationalawarenessmodelbasedoninformationfusionisproposed.Thismodelfusesmulti-sourceinformationfromamassoflogsbyintroducingthemodifiedD—Sevidencetheory,getsthevaluesofnodessecuritysituationalawarenessbysituationalfa
5、ctorsfusionusingattacksthreatandvulnerabilityinformationwhichnetworknodeshaveandsuccessfulattacksdependon,computesthevalueofnetworksecuritysituationalawarenessbynodessituationfusionusingserviceinformationofthenetworknodes,anddrawsthesecurity-situation-graphofnetwork.T
6、hen,itanalyzesthetimeseriesofthecomputingresultsbyARMAmodeltOforecastthefuturethreatinnetworksecurity.FinallyanexampleofactualnetworkdatasetsisgiventovalidatethenetworksecuritysituationalawarenessmodeIandalgorithm.Theresultsshowthatthismodelandalgorithmismoreeffective
7、andaccuratethantheexistingsecuritysituationalawarenessmethods.Keywordssecuritysituationalawareness;informationfusion;D—Sevidencetheory;timeseriesanalysis;forecast摘要安全态势评估是近年来国内外在网络安全领域的研究热点之一.对已有的安全态势评估方法进行了详细分析和比较,针对网络安全中多数据源的特点,提出基于信息融合的网络安全态势评估模型,引入改进的D—S证据理论将多数据源信
8、息进行融合,利用漏洞信息和服务信息,经过态势要素融合和节点态势融合计算网络安全态势,绘制安全态势曲线图,同时对态势计算结果进行时间序列分析,从而实现网络安全趋势的预测.最后利用网络实例数据,对所提出的网络安全态势评估模型和算法进行了验证,结果表明该
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