service timestamps debug uptime

service timestamps log uptime

service password-encryption

no service tcp-small-servers

no service udp-small-servers

!

hostname <您路由器的名称>

!

enable password <进入特权模式的口令>

!

no ip name-server

!

ip subnet-zero

no ip domain-lookup

ip routing

!

interface Ethernet 0

no shutdown

description connected to EthernetLAN

ip address <以太网口IP地址及子网掩码>

ip nat inside

keepalive 10

!

interface Serial 0

no shutdown

description connected to Internet

ip address <广域网口IP地址及子网掩码>

ip nat outside

encapsulation hdlc

!

! Access Control List 1

!

no access-list 1

access-list 1 permit <内网网段地址及子网掩码反码>

!

! Dynamic NAT

!

ip nat translation timeout 86400

ip nat translation tcp-timeout 86400

ip nat translation udp-timeout 300

ip nat translation dns-timeout 60

ip nat translation finrst-timeout 60

ip nat pool <外部地址池名称> <外部地址池范围> netmask <外部地址掩码>

ip nat inside source list 1 pool <外部地址池名称> overload

!

router rip

version 2

network <内网网段地址>

passive-interface Serial 0

no auto-summary

!

!

ip classless

!

! IP Static Routes

ip route 0.0.0.0 0.0.0.0 Serial 0

no ip http server

snmp-server community public RO

no snmp-server location

no snmp-server contact

!

line console 0

exec-timeout 0 0

password <从控制台端口登录进用户模式所需口令>

login

!

line vty 0 4

password

login

!

end