项目一 初识网络 ············································································ 1
任务一 认识网络 ························································································ 4
一、计算机网络概论 ··············································································· 4
二、计算机网络的分类及拓扑结构 ····························································· 6
三、计算机网络体系结构 ········································································ 11
任务二 分析网络协议 ················································································· 26
一、认识地址解析协议ARP ···································································· 26
二、认识控制报文协议ICMP ··································································· 28
三、认识网卡与MAC 地址 ····································································· 29
任务三 网络命令的作用 ·············································································· 33
一、以太网协议 ···················································································· 34
二、IP 协议 ·························································································· 35
项目二 组建交换式网络 ································································· 51
任务一 双绞线的制作与测试 ········································································ 52
一、传输介质 ······················································································· 52
二、制作网线工具 ················································································· 58
任务二 组建对等网 ···················································································· 63
一、局域网技术 ···················································································· 64
二、以太网协议标准 ·············································································· 65
三、CSMA/CD 协议 ··············································································· 65
四、认识二层网络设备 ··········································································· 68
任务三 子网划分与子网编址 ········································································ 71
一、IP 地址的结构和分类 ······································································· 71
二、子网及其子网掩码 ··········································································· 75三、子网规划与编址 ·············································································· 78
任务四 VLAN 的划分 ················································································· 81
一、虚拟局域网 ···················································································· 81
二、VLAN 的划分 ················································································· 83
任务五 跨交换机VLAN 的通信 ····································································· 90
一、VLAN 端口模式 ·············································································· 90
二、VLAN 中继技术 ·············································································· 91
项目三 实现网络互联 ··································································· 103
任务一 路由器基本配置 ············································································ 104
一、路由器的工作原理及常用路由器 ······················································· 104
二、路由及路由选择 ············································································ 105
任务二 静态路由配置 ··············································································· 111
一、静态路由 ····················································································· 112
二、IP 数据报在路由器间的转发过程 ······················································ 113
任务三 RIP 动态路由配置 ·········································································· 119
一、动态路由 ····················································································· 120
二、RIP 协议······················································································ 122
任务四 OSPF 协议配置 ·············································································· 128
任务五 VLAN 间互通 ··············································································· 133
一、三层交换机及其工作原理 ································································ 134
二、二层交换机、路由器与三层交换机的功能比较 ····································· 136
项目四 配置网络服务 ··································································· 150
任务一 配置DNS，HTTP 及FTP 服务 ·························································· 151
一、传输层控制协议TCP ······································································ 151
二、应用层 ························································································ 153
任务二 配置DHCP ··················································································· 161
一、DHCP 协议 ·················································································· 161
二、DHCP 中继代理 ············································································ 161
任务三 SMTP\POP3 协议 ··········································································· 165
项目五 局域网安全技术 ································································ 176
任务一 配置防火墙 ·················································································· 177
一、认识网络安全威胁 ········································································· 177
二、常见安全防护措施 ········································································· 178
三、防火墙技术 ·················································································· 180
任务二 ACL 访问控制列表 ········································································· 186一、访问控制列表的工作原理 ································································ 186
二、标准访问控制列表的配置 ································································ 187
三、扩展访问控制列表的配置 ································································ 188
任务三 主机安全防护 ··············································································· 192
一、ARP 病毒 ···················································································· 193
二、常用的杀毒软件 ············································································ 194
三、Windows 防火墙 ············································································ 197
任务四 虚拟专用网VPN ············································································ 202
一、安全加密与传输技术 ······································································ 203
二、网络隧道技术（VPN） ··································································· 206
项目六 教育网络系统工程 ····························································· 229
一、网络系统设计原则 ········································································· 230
二、网络系统设计的模块化 ··································································· 231
附录 计算机网络技术术语中英互译 ················································· 248