专业外语论文2

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1、TheAutomatonModelingofTypicalNetworkAttacksShiZhicaiElectronic&ElectricalEngineeringInstituteShanghaiUniversityofEngineeringScienceShanghai,P.R.Chinaszcl964@163.comAbstract—Networksecurityisoneofthemostimportantresearchfieldsamonginformationsecuritytechniques・Mostproblemsofnetworksecurityareofte

2、ncausedbynetworkattacks.Inordertoensurenetworksecurerunningitisverynecessarytoanalyzeandresearchtheprocedureofnetworkattacks・Inthispaper,theformalmethodisresearchedandautomatontheoryisusedtodescribetheprocedureofnetworkattacks.Thestatetransformdiagramsofsometypicalnetworkattacksaregiven.Differen

3、tstatetransformdiagramsareusedtodescribemodelsforvariousnetworkattacksandthesemodelscanbecombinedflexiblysoastodescribecomplicatedattackbehaviors・Thisformalmethodfordescribingnetworkattacksprovidesaneffectiveapproachforresearchingthemechanismofnetworkattacks・Keywords-networkattack;automata;infor

4、mationsecurity;networkintrusionI.INTRODUCTIONNetworkIntrusionsaredefinedassomebehaviorswhichdestroytheconfidentiality,integrity,availabilityandcontrollabilityofthenetworksystem[1].Withtherapiddevelopmentandwidespreadapplicationofnetworktechniquesnetworkattacksbecomemorecomplicated.Itisbecomingve

5、ryimportanthowtoabstractthefeaturesofnetworkattacksanddescribeattackproceduressothattheycanbedetectedcffcctivcly.Naturallanguagecanbeusedtodescribeattackprocedures・Althoughthe摘要——衣信息安全技术领城中，网给的姿全性是最重要的研老之一。大多数网给安全问題往往是网络攻击引起的。为了保证网给安全可靠的运行，分析和研克网给攻击的步骡是非常有必要的。卷本丈中，菠研究的正式的方出和令动机理也是用来描述网络攻击的步骤。本文给

6、出了一些状态雯换的典型的网络攻击图。不同的状态转换图是用来描述各种网给攻击栈型，这些核型可以灵活组合，来描述复杂的攻击行为。这科正式的用来描述网给攻击的方冻对网络攻击的就由的研究提供了一种有效的途:经。I•引言网络入侵彼定义为破坏了网络系统的櫟密性，完整性，可用性和可控性［1］的一定的行为。随着网络技术的迅速发畏和广泛应用，网络攻击雯得趟来越复杂。如何概括网络攻击的特征和描述攻击步骡使他们能有败地检测麦得非帯重要。methodisdirectilisverydifficulttoprocessnaturallanguagewithacomputer.Tidwellusedattackt

7、reetomodeltheprocedureofnetworkintrusions[2]・Buthismethodcannotdescribethechangeofthesystemstateseffectively.Asweknow,whenthesystemisrunningitchangesfromonestatetoanotherstate.Thesestatesrepresentdifferentmeanings・Theymaybes