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1、ComputernetworksecurityandtoguardagainstAbstract:Whenmankindenteredthe21stcenturyinformationsociety,thenetworksocietyofthetime,Chinawillestablishacompletesetofnetworksecuritysystem,especiallyfromthepolicyandlawtoestablishChina'sowncharacteristics,networksecuritysystem.Keywor
2、ds:computer;network;security;preventIntheinformationage,informationcanhelpgroupsorindividualssothattheybenefitfrom,thesameinformationcanalsobeusedtoposeathreattothem,causeddamage.Thereforenetworksecurity,includingthecompositionofnetworkhardware,softwareandnetworktransmission
3、ofinformationsecurity,sothattheydonotbecauseofaccidentalormaliciousdestructionoftheattacks,networksecuritynotonlythetechnicalaspects,butalsomanagementissues,bothcomplementeachother,areindispensable.First,theconceptofcomputernetworksecurityInternationalOrganizationforStandard
4、izationof"computersecurity"isdefinedas:"Toestablishadataprocessingsystemandtheadoptionoftechnologyandmanagementofsecurityprotection,theprotectionofcomputerhardware,software,dataisnotduetoaccidentalandmaliciousdestructionofreasons,changeandleakage."Theabovedefinitionofcompute
5、rsecurityincludesphysicalsecurityandlogicalsecurityofboththecontentsofthecontentsofthelogicofsecuritycouldbeunderstoodasweoftensaythattheinformationsecurity,informationreferstotheconfidentiality,integrityandavailabilityofprotection,andnetworksecurityInformationsecurityisthem
6、eaningoftheextension,thatnetworksecurityisanetworkofinformationconfidentiality,integrityandavailabilityprotection.Computernetworksecurityasthespecificmeaningoftheuserchanges,theuserisdifferentonthenetworksecurityawarenessandrequirementswillbedifferent.Fromtheordinaryuser'spo
7、intofview,couldonlyhopethatpersonalprivacyorconfidentialinformationtransmissiononthenetworkbeprotectedagainsteavesdropping,tamperingandforgery;andnetworkproviderinadditiontocareaboutthesenetworkinformationsecurity,wemustalsoconsiderhowtodealwithsuddennaturaldisasters,suchasm
8、ilitarystrikesagainstthedestructionofnetworkhardware,aswellasunusualinthene
