router(config)#ip dhcp pool 1 開啟DHCP功能

Router(dhcp-config)#network 192.168.2.0 255.255.254.0

Router(dhcp-config)#default-router 192.168.2.1

Router(dhcp-config)#dns-server 202.100.96.68 222.75.152.129

router(config)#interface FastEthernet0/0 配置公網介面

router(config-if)#ip address 124.224.177.x 255.x.x.x 配置運營商提供的ip地址及掩碼

router(config-if)#ip nat outside

router(config-if)#no shudown

router(config)#interface FastEthernet0/1 配置內網介面

router(config-if)#ip address 192.168.2.1 255.255.254.0

router(config-if)#ip nat inside

router(config-if)#no shutdown

router(config)#ip route 0.0.0.0 0.0.0.0 124.224.177.xxx 配置路由124.224.177.xxx為運營商提供的閘道器IP

router(config)#access-list 101 permit ip any any 配置訪問控制列表，執行訪問公網的ip段

router(config)#ip nat inside source list 101 interface FastEthernet0/0 overload 配置nat轉換