【正文】
*****************************************CISCO********************************* hostname r1762a username r1762b password 0 cisco interface FastEther0/1 ip address ip accessgroup 100 in ip nat inside interface Serial0/2/0 ip address ip accessgroup 100 out ip nat outside ip virtualreassembly encapsulation ppp ppp authentication chap router rip version 2 work no autosummary ip route ip route ip nat inside source list 10 interface Serial0/2/0 overload accesslist 10 permit accesslist 100 permit ip host host accesslist 100 permit tcp host host eq accesslist 100 deny tcp any any accesslist 100 permit ip a