毕业设计说明书(论文)作者：学号：院系：专业：题目：指导者：(姓名)(专业技术职务)评阅者：(姓名)(专业技术职务)年月南毕业设计说明书（论文）中文摘要如今，网络接入技术迅猛发展，有线网络已经不能满足企业对灵活、快捷、高效办公的需求。无线网络不受网线和地理位置的束缚，已然成为当今现代化企业网络的发展趋势。但是，无线网相对于有线网，比较脆弱，而且企业无线网有异于一般的家庭无线网，它的安全性是需要着重考虑的。本文介绍了基于安全的中小企业无线网络的组建，利用CiscoPacketTracer模拟软件模拟企业无线网基本的构架和方案。组建的企业内部网络分为三个层次。核心层，使用三层交换机进行负载均衡和冗余。汇聚层，依靠访问控制列表（ACL）制订不同部门的通信规则。接入层，划分虚拟局域网（VLAN）将各部门的计算机分隔开来，通过无线设备将计算机接入网络中。从功能上将整个网络分为两个部分，一是内部网络，所有部门的通信以及对内部服务器的访问都通过此网络，不能与外部通信。另一个则是能访问外网，面向客户的网络。这样极大地提高了内网数据的安全。为了提高网络信息安全性，还布设防火墙、内外地址转换（NAT）、分部与总部建立虚拟专用网络（VPN）等安全措施。关键字无线网络信息安全安全措施毕业设计说明书（论文）外文摘要TitleWirelessnetworkstructuresbasedonthesafetyofSMEsAbstractToday,thenetworkaccesstechnologyrapiddevelopmentofwirednetworkcannotmeetthedemandforflexible,fastandefficientoffice.Wirelessnetworkfromtheshacklesofcableandgeographicallocation,hasbecomethedevelopmenttrendoftoday'smodernenterprisenetworks.However,thewirelessnetworkrelativetothecablenetworkisrelativelyweak,differentfrommosthomewirelessnetworkandthewirelessnetwork,itssecurityistheimportantconsideration.Thisarticledescribestheformationofawirelessnetworkbasedonthesafetyofsmallandmediumenterprises,basedonCiscoPacketTracersimulationsoftwaretosimulatetheenterprisewirelessnetworkarchitectureandprograms.Theinternalnetworkisdividedintothreelevels.Thecorelayer,usingthethreeswitchesforloadbalancingandredundancy.Convergencelayer,relyingonaccesscontrollist(ACL)tothedevelopmentofdifferentsectorsofcommunicationrules.Accesslayer,dividedintovirtuallocalareanetwork(VLAN)separatedfromthevariousdepartmentsofcomputer,computerwirelessdevicesaccessthenetwork.Theentirenetworkfromthefunctionwillbedividedintotwoparts,oneistheinternalnetwork,allsectorsofcommunications,andtheinternalserveraccessthroughthisnetworkcannotcommunicatewiththeoutside.Theotherisabletoaccesstheexternalnetwork,customer-orientednetwork.Thisgreatlyimprovesthesecurityofdatawithinthenetwork.Inordertoimprovethesecurityofnetworkinformation,butalsolaidthefirewall,internalandexternaladdresstranslation(NAT),segmentsandheadofficetoestablishavirtualprivatenetwork(VPN)andothersecuritymeasures.KeywordsNetworkSecurity,VLAN,ACL,NAT，VPN目录前言.................................................................1第一章无线网络综述...................................................21.1无线网络标准....................................................21.2企业网络的安全误区..............................................21.3术语及相关缩写解释..............................................4第二章企业网络安全综述...............................................52.1相关设备的概述..................................................52.2企业网应用的主要技术............................................5第三章网络安全的设计与实现..........................................163.1整体框架说明...................................................163.2企业网内部交换机的...
