【正文】
ged state to up %LINEPROTO5UPDOWN: Line protocol on Interface FastEther0/0, changed state to up Server (configif)exit Server(config)accesslist 1 permit Server(config)ip nat inside source list 1 interface s0/0/0 overload Server (config)ip route s0/0/0 Server (config)exit Server ISP端的配置: Routeren Routerconf t Enter configuration mands, one per line. End with CNTL/Z. Router(config)host ISP ISP(config)no ip domainlookup ISP(config)line con 0 ISP(configline)logg syn ISP(configline)exectimeout 0 0 ISP(configline)exit ISP(config)int s0/0/0 ISP(configif)ip add ISP(configif)no shut %LINK5CHANGED: Interface Serial0/0/0, changed state to up ISP(configif)clock rate 64000 ISP(configif)exit %LINEPROTO5UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up ISP(config)int fa0/0 ISP(configif)ip ad