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1、....ComputernetworksecurityandtoguardagainstAbstract:Whenmankindenteredthe21stcenturyinformationsociety,thenetworksocietyofthetime,Chinawillestablishacompletesetofnetworksecuritysystem,especiallyfromthepolicyandlawtoestablishChina'sowncharacteristics,networksecuritysystem.Keywords
2、:computer;network;security;preventIntheinformationage,informationcanhelpgroupsorindividualssothattheybenefitfrom,thesameinformationcanalsobeusedtoposeathreattothem,causeddamage.Thereforenetworksecurity,includingthecompositionofnetworkhardware,softwareandnetworktransmissionofinform
3、ationsecurity,sothattheydonotbecauseofaccidentalormaliciousdestructionoftheattacks,networksecuritynotonlythetechnicalaspects,butalsomanagementissues,bothcomplementeachother,areindispensable.First,theconceptofcomputernetworksecurityInternationalOrganizationforStandardizationof"comp
4、utersecurity"isdefinedas:"Toestablishadataprocessingsystemandtheadoptionoftechnologyandmanagementofsecurityprotection,theprotectionofcomputerhardware,software,dataisnotduetoaccidentalandmaliciousdestructionofreasons,changeandleakage."Theabovedefinitionofcomputersecurityincludesphy
5、sicalsecurityandlogicalsecurityofboththecontentsofthecontentsofthelogicofsecuritycouldbeunderstoodasweoftensaythattheinformationsecurity,informationreferstotheconfidentiality,integrityandavailabilityofprotection,andnetworksecurityInformationsecurityisthemeaningoftheextension,thatn
6、etworksecurityisanetworkofinformationconfidentiality,integrityandavailabilityprotection.Computernetworksecurityasthespecificmeaningoftheuserchanges,theuserisdifferentonthenetworksecurityawarenessandrequirementswillbedifferent.Fromtheordinaryuser'spointofview,couldonlyhopethatperso
7、nalprivacyorconfidentialinformationtransmissiononthenetworkbeprotectedagainsteavesdropping,tamperingandforgery;andnetworkproviderinadditiontocareaboutthesenetworkinformationsecurity,wemustalsoconsiderhowtodealwithsuddennaturaldisasters,suchasmilitarystrikesagainstthedestructionofn
8、etworkhardware,aswellasunusualint