浅析计算机网络安全(英文含中文翻译)

1、XXXX学院计算机专业英语班级计科学号12姓名日期2015-12-SecurityofComputerNetworkSystem1SecurityofComputerNetworkSystemAbstract:Thispaperdiscussedthesecureanddependableproblemaboutthecomputernetworksystem.Onsomeaspects:theimportanceofnetworksecuritybasictheoryfunctionandthemethodofsolvingaproblemetc.Goodviewsforsolvingtheproblemareputforward.Itstrengthenspeople’sconsciousnessonnetworksecurity.Keywords:ComputernetworkVirtualprivatenetworkEncryptiontechniquesFirewallIntroduction:Alongwiththecomputernetworktechnologydev。

2、elopmentthenetworksecurityandthereliabilityhavebecomethequestionofcommoninterestbyallusers.Thepeopleallhopedtheirownnetworksystemcanmovereliablynotexternalintruderdisturbanceanddestruction.Thereforesolvesthenetworksecurityandthereliableproblemcarefullyisaguaranteethenetworknormaloperation’spremiseandsafeguard.First:theimportanceofthenetworksecurity.Withtheinformationdevelopingfasttodaythecomputernetworkobtainedthewidespreadapplicationbutalongwiththenetworkinformationtransmissioncapacitygrowingfa。

3、stersomeorganizationsanddepartmentsbenefitthespeedupwiththeserviceoperationinthenetworkwhilethedatahasalsosufferedtoextentattackanddestruction.Theaggressormayintercepttheinformationinthenetworkstealstheuser’spasswordthedatabaseinformationalsomaytamperwiththedatabasecontenttheforgeusersstatusdeniesownsignature.Andwhatismoretheaggressormaydeletethedatabasecontentthedestroynodereleasescomputervirusandsoon.Thiscausedatasecurityandownbenefithavereceivedtheseriousthreat.AccordingtoAmericanFBIUSFederal。

4、BureauofInvestigationinvestthenetworksecuritycreatestheeconomiclosssurpasses17billiondollarseveryyear.75corporationreportfinancelossisbecausethecomputersystemsecurityproblemcreates.Morethan50safethreatcomefrominside.Butonly59losscouldbepossibleestimate.InChinatheeconomiclossamountinviewoffinancialdomainandthebankSecurityofComputerNetworkSystem2negotiablesecuritiescomputersystemsecurityproblemscreateshasreachedashighasseveralhundredmillionYuanalsosometimesoccursinviewofotherprofessionnetworksecur。

5、itythreat.Thusitcanbeseenregardlessofisthemeanattackorunconsciousdisoperationwillallbeabletobringtheinestimablelosstothesystem.Thereforethecomputernetworkmusthavetheenoughstrongsecuritymeasure.RegardlessofisinthelocalareanetworkorinWANthenetworksecuritymeasureshouldbeOmni-directionalinviewofeachkindofdifferentthreatandthevulnerabilitysothatitcanguaranteethenetworkinformation’ssecrecytheintegrityandtheusability.Second:Networksecurityrationale.InternationalStandardizationOrganizationISOoncesuggest。

6、edthecomputersecuritythedefinitionwas:“Thecomputersystemmustprotectitshardwarethedatanotaccidentallyorrevealsintentionallythechangeandthedestruction.”InordertohelpthecomputeruserdiscriminationandthesolutioncomputernetworksecurityproblemtheAmericanDepartmentofDefenseannounced“theorangepeelbook”orangebookofficialnameis“crediblecomputersystemstandardappraisalcriterion”hascarriedonthestipulationtothemultiusercomputersystemsecurityrankdivision.Theorangepeelbookfromlowtohighdividesintothecomputersecur。

7、ityfourkindsofsevenlevels:D1C1C2B1B2B3A1.AboveallD1leveldoesnothavethelowestsafetymarginrankC1andtheC2levelhasthelowestsafetymarginrankB1andtheB2levelhasthemediumsafekeepingofsecurityabilityrankB3andA1belongstothehighestsecurityrating.Inthenetworkconcretedesignprocessitshouldactaccordingtoeachtechnologystandardtheequipmenttypetheperformancerequirementaswellasthefundswhichinthenetworkoverallplanproposedandsoontheoverallevaluationdeterminesonequitereasonablytheperformancehighnetworksecurityrankthu。

8、srealizationnetworksecurityandreliability.Third:Thenetworksecurityshouldhavefunction.Inordertoadapttheinformationtechnologydevelopmentwellthecomputernetworkapplicationsystemmusthavefollowingfunction:1Accesscontrol:ThroughtothespecificSecurityofComputerNetworkSystem3webpagetheserviceestablishmentaccesscontrolsysteminarrivestheoverwhelmingmajorityattackimpedimentinfrontoftheattackgoal.2Inspectsthesecurityloophole:Throughtosecurityloopholecyclicalinspectionevenifattacksmaygettheattackgoalalsomaycau。

9、setheoverwhelmingmajorityattacktobeinvalid.3Attackmonitoring:Throughtospecificwebpageserviceestablishmentattackmonitoringsystembutreal-timeexaminestheoverwhelmingmajorityattackandadoptstheresponsethemotionforexampleseparationnetworkconnectionrecordingattackprocesspursuitattacksourceandsoon.4EncryptionCommunication:Encryptsonowninitiativethecommunicationmayenabletheaggressortounderstandtherevisionsensitiveinformation.5Authentication:Thegoodauthenticationsystemmaypreventtheaggressorpretendsthevali。

10、dateduser.6Backupandrestoration:Thegoodbackupandrestoresthemechanismmaycausesthelosseswhentheattackassoonaspossiblerestoresthedataandthesystemservice.7Multi-layeredDefense:Theaggressorafterbreaksthroughthefirstdefenselinedelaysorblocksittoreachtheattackgoal.8Setsupthesafemonitoringcenter:Providesthesecuritysystemmanagementthemonitoringtheprotectionandtheemergencycaseservicefortheinformationsystem.Fourth:Thenetworksystemsafetycomprehensivesolutionmeasures.Ifwanttorealizethenetworksecurityfunctionw。