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1、ComputernetworksecurityandtoguardagainstAbstract:Whenmankindenteredthe21stcenturyinformationsociety,thenetworksocietyofthetime,Chinawillestablishacompletesetofnetworksecuritysystem,especiallyfromthepolicyandlawtoestablishChina'sowncharacteristics,networksecurit
2、ysystem.Keywords:computer;network;security;preventIntheinformationage,informationcanhelpgroupsorindividualssothattheybenefitfrom,thesameinformationcanalsobeusedtoposeathreattothem,causeddamage.Thereforenetworksecurity,includingthecompositionofnetworkhardware,so
3、ftwareandnetworktransmissionofinformationsecurity,sothattheydonotbecauseofaccidentalormaliciousdestructionoftheattacks,networksecuritynotonlythetechnicalaspects,butalsomanagementissues,bothcomplementeachother,areindispensable.First,theconceptofcomputernetworkse
4、curityInternationalOrganizationforStandardizationof"computersecurity"isdefinedas:"Toestablishadataprocessingsystemandtheadoptionoftechnologyandmanagementofsecurityprotection,theprotectionofcomputerhardware,software,dataisnotduetoaccidentalandmaliciousdestructio
5、nofreasons,changeandleakage."Theabovedefinitionofcomputersecurityincludesphysicalsecurityandlogicalsecurityofboththecontentsofthecontentsofthelogicofsecuritycouldbeunderstoodasweoftensaythattheinformationsecurity,informationreferstotheconfidentiality,integritya
6、ndavailabilityofprotection,andnetworksecurityInformationsecurityisthemeaningoftheextension,thatnetworksecurityisanetworkofinformationconfidentiality,integrityandavailabilityprotection.Computernetworksecurityasthespecificmeaningoftheuserchanges,theuserisdifferen
7、tonthenetworksecurityawarenessandrequirementswillbedifferent.Fromtheordinaryuser'spointofview,couldonlyhopethatpersonalprivacyorconfidentialinformationtransmissiononthenetworkbeprotectedagainsteavesdropping,tamperingandforgery;andnetworkproviderinadditiontocare
8、aboutthesenetworkinformationsecurity,wemustalsoconsiderhowtodealwithsuddennaturaldisasters,suchasmilitarystrikesagainstthedestructionofnetworkhardware,aswellasunusualinthene
