1IPCiscoPacketTracerCiscoPacketTracer[1]23[2]45[3][4,8,9]67[5,7][6]8[10,11]9WEBNF5220310NF52201112enableenablesecrettelnetcongqianlu13141516171819202122232425267-27-3TCP/IP7-4DDOS27282930[1]....2009[2].[3][4]....2009[5].[6]....2007[7]....2005[8]....2006[9]CiscoSystems,Inc.CiscoIOS12.0bridgingandIBMnetworksolutions.2006[10]InformationGatekeepersInc.ChinaNetworkSolutions.[11]IncIconGroupInternational,Incorporated.NetworkSolutions.2000TheSME’sNetworkPlanningAndDesignCongQianlu(SchoolofInformation&Computer,AnhuiAgriculturalUniversity,Hefei,230036)Abstract:CombiningtheactualneedsofSMEsinthenetwork,throughtheresearchofthenetworkconstructiondesign,thesecurenetworkconfigurationdesign,theserversetupdesign,andotheraspectsofnetworksecurityresearch,thisgraduationdesigngivesadetailedexplanationofthekeyissuesencounteredduringthenetworkPlanninganddesign.ThisdesignanalyzesthenetworktopologyforSMEs.GettheSimulationofthenetworkbyCiscoPacketTracertools,DotheConfigurationandSafetyDesignofthenetworkandalsogivesthenetworkplanninganddesignsolutions.Keywords:Networktopologyplanning;Networktopologyplanning;networksecuritydesign;CiscoPacketTracer;routing,switching,serveremulation31323334hx-sw(config)#iproute0.0.0.00.0.0.0172.16.1.135