Server(config-if)# ip nat outside
Server (config-if)# no shut
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
Server (config-if)# int fa0/0
Server (config-if)# ip add 192.16.1.1 255.255.255.0
Server(config-if)# ip nat inside
Server (config-if)# no shut
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Server (config-if)# exit
Server(config)# access-list 1 permit 192.168.1.00.0.0.255
Server(config)# ip nat inside source list 1 interface s0/0/0 overload
Server (config)# ip route 0.0.0.0 0.0.0.0 s0/0/0
Server (config)# exit
Server#
ISP 端的配置:
Router> en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# host ISP
ISP(config)# no ip domain-lookup
ISP(config)# line con 0
ISP(config-line)# logg syn
ISP(config-line)# exec-timeout 0 0
ISP(config-line)# exit
ISP(config)# int s0/0/0
ISP(config-if)# ip add 202.1.1.2 255.255.255.0
ISP(config-if)# no shut
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
ISP(config-if)# clock rate 64000
ISP(config-if)# exit
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
ISP(config)# int fa0/0
ISP(config-if)# ip add 202.2.2.2 255.255.255.0
ISP(config-if)# no shut
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
ISP(config-if)# int fa0/1
ISP(config-if)# ip add 202.3.3.3 255.255.255.0
ISP(config-if)# no shut
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
ISP(config-if)# exit
ISP(config)#