通信网络管理概述

NetworkAdministrationWhatisaSystemsAdministrator?Personresponsiblefor:SettingupserversConfiguringtheenvironmentforwebandotherserversManagingdatabaseintegration(dependingonsizeofthecompany)SettingupemailImplementingsecurity(alsodependingoncompanysize)DataBackupSoftwareupdatesHardwareandsoftwaredesignandtroubleshootingWhatisaNetworkAdministrator?Personresponsiblefor:Networkchanges(MACs)Layers1-6ofOSIModel(usuallynotresponsibleforapplications)NetworkmonitoringIDS(dependsoncompanysize)Firewall(dependsoncompanysize)Router,switchconfigurationsNetworkarchitecture,designandtroubleshootingNetworkorSystemAdministrators?Theworkwe’vediscussedinthisclassistheroleoftheNetworkAdministrator.TheSystemsAdministratorismorefocusedonservers,serverhardware,andsoftware.OtherRoles&NeededSkillsetsSystemAdministrationOneormoreofseveralnetworkoperatingsystem(NOS)platforms,includingUnix,Windows,NovellOftenSA’shavecertificates(oftenMCSE)orUnixcertificationsExperience!Themoreyousee,themorerapidlyyoucantroubleshoot.Adegreeishelpful,especiallyifyouwanttomoveintomanagementGoodcommunicationskills–workwithendusersOtherRoles&NeededSkillsetsNetworkAdministrationCiscoCertification(CCNECiscoCertifiedNetworkEngineer)SecurityCertsNetworkArchitecture&DesignExperienceMoreanalyticalskill,lessworkwithendusersOtherRoles&NeededSkillsetsSecurityAdministrationEnsurethattheorganization'ssystemsaresecureandverydifficulttohack.Aslawschangeprotectingconsumers,companiesmustcommunicatesecuritybreaches.Becomingaverybigdeal!Maykeepwatchoveremployeesforinappropriatenetworkusage.Dealingwithvirusesthatthreatencoreequipment.In-depthfirewallknowledgeisrequired,aswellasasolidunderstandingofsystemhacking.Incaseasecuritybreachcouldnotbeaverted,itisthesecurityadministrator’sresponsibilitytoclosethesystems,determinedamages,tracetheculpritandensurethatitdoesn’thappenagain.Salaries–CareerstobeConsidered..Zipcode92688(SouthOC)SeniorNetworkAdministrator–Averagesalaryof$70,000to$88,000NetworkSecurityManager–AverageSalaryof$62,000to$103,000ITManager–AverageSalaryof$88,000to$116,000NetworkPlanningManager–AverageSalaryof$97,000to$112,000SeniorSystemsAdministrator–AverageSalaryof$73,000to$94,000FutureHotITFieldsBiotechnical(TechRepublic,2004)Security(TechRepublic,2004)InternetMarketing(CareerPlanner,2004)InternetSecuritySecurityMarkets

Source:AITBenefits

Source:InformationWeekNetworkManagementTheothersideofnetwork“management”!Intelecom,networkmanagementistheexecutionofthesetoffunctionsrequiredforcontrolling,planning,allocating,deploying,coordinating,andmonitoringtheresourcesofatelecommunicationsnetwork,includingperformingfunctionssuchasinitialnetworkplanning,allocation,predeterminedtrafficroutingtosupportloadbalancing,cryptographickeydistribution,faultmanagement,securitymanagement,performancemanagementandaccountingmanagement.SNMPSimpleNetworkManagementProtocol(SNMP)ispartoftheinternetprotocolsuiteasdefinedbytheIETF.Theprotocolcanbeusedtomonitoranynetworkattacheddevicesforanyconditionsthatwarrantit.ThefirstRFC’sforSNMPwerepublishedin1988:RFC1065-StructureandIdentificationofManagementInformationforTCP/IP-basedinternetsRFC1066-ManagementInformationBaseforNetworkManagementofTCP/IP-basedinternetsRFC1067-ASimpleNetworkManagementProtocolSideNote:RFC’sRequestforComments(RFC)documentisoneofaseriesofnumberedInternetinformationaldocumentsandstandardswidelyfollowedbycommercialsoftwareandfreewareintheInternetandUNIXcommunities.TheRFCseriesofdocumentsonnetworkingbeganin1969aspartoftheoriginalARPAWideAreaNetworking(ARPANET)project.ItistheofficialpublicationchannelfortheInternetEngineeringSteeringGroup,InternetArchitectureBoard,andtheInternetcommunity.RFCscovermanytopicsinadditiontoInternetStandards,suchasintroductionstonewresearchideasandstatusmemosabouttheInternet.RFCarepublishedbytheRFCEditorwhoisunderthegeneraldirectionoftheIAB.SNMPContinued..SeparationoftheprotocolfromthestructureofmanagementinformationhasmadeiteasytouseSNMPtomonitorhundredsofdifferenttypesofsubsystemswithinanetwork,acrossalllayersoftheOSImodel,intoapplications,databasesandemail.TheSNMPframeworkisbasedon3components.EachIPaddressablesysteminanetwork,suchasanodeorrouter,,hostsamasteragentforthatsystem.Amasteragenttypicallylimitsitsactivitytoparsingandformattingoftheprotocol.Ifsystemhasmultiplemanageablesubsystemspresent,themasteragentpassesontherequestsitreceivestoon