用3662做NAT＋Firewall的配置实例

　　Building configuration...

　　Current configuration : 1966 bytes

　　!

　　! Last configuration change at 18:34:27 UTC Fri Nov 29 2002

　　! NVRAM config last updated at 18:01:28 UTC Fri Nov 29 2002

　　!

　　version 12.1

　　no service single-slot-reload-enable

　　service timestamps debug uptime

　　service timestamps log uptime

　　service password-encryption

　　!

　　hostname cisco3662

　　!

　　enable secret 5

　　enable password 7

　　!

　　!

　　!

　　!

　　!

　　ip subnet-zero

　　no ip domain-lookup

　　!

　　ip inspect name internetin cuseeme timeout 3600

　　ip inspect name internetin ftp timeout 3600

　　ip inspect name internetin h323 timeout 3600

　　ip inspect name internetin http timeout 3600

　　ip inspect name internetin rcmd timeout 3600

　　ip inspect name internetin realaudio timeout 3600

　　ip inspect name internetin smtptimeout 3600

　　ip inspect name internetin sqlnet timeout 3600

　　ip inspect name internetin streamworks timeout 3600

　　ip inspect name internetin tcp timeout 3600

　　ip inspect name internetin tftptimeout 30

　　ip inspect name internetin udp timeout 15

　　ip inspect name internetin vdolive timeout 3600

　　ip audit notify log

　　ip audit po max-events 100

　　!

　　!

　　interface FastEthernet0/0

　　ip address 211.123.212.2 255.255.255.128

　　ip nat outside

　　ip inspect internetin in

　　duplex auto

　　speed auto

　　!

　　interface FastEthernet0/1

　　no ip address

　　shutdown

　　duplex auto

　　speed auto

　　!

　　interface FastEthernet1/0

　　ip address 172.16.255.106 255.255.255.224

　　ip nat inside

　　duplex auto

　　speed auto

　　!

　　ip nat pool outpool 211.123.212.65 211.123.212.85 netmask 255.255.255.128

　　ip nat inside source list 11 pool outpool overload

　　ip classless

　　ip route 0.0.0.0 0.0.0.0 211.123.212.1

　　ip route 172.16.0.0 255.255.0.0 FastEthernet1/0

　　ip route 192.168.0.0 255.255.0.0 FastEthernet1/0

　　no ip http server

　　!

　　access-list 11 permit 172.16.0.0 0.0.255.255

　　access-list 11 permit 192.168.0.0 0.0.255.255

　　!

　　!

　　line con 0

　　exec-timeout 5 0

　　line aux 0

　　line vty 0 4

　　exec-timeout 5 0

　　password 7

　　login

　　!

　　end