Cisco网络教材：Cisco NAT的配置例子

cisco NAT 的配置例子

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version 12.0

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

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hostname nat-r1

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enable secret 5 $1$FEQr$INhRecYBeCb.UqTQ3b9mY0

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ip subnet-zero

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interface Ethernet0

ip address 172.18.150.150 255.255.0.0

no ip directed-broadcast

ip nat inside /* 定义此为网络的内部端口 */

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interface Serial0

ip address 192.1.1.161 255.255.255.252

no ip directed-broadcast

ip nat outside /* 定义此为网络的外部端口 */

no ip mroute-cache

no fair-queue

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interface Serial1

no ip address

no ip directed-broadcast

shutdown

! /* 定义从ISP那里申请到的IP在企业内部的分配策阅 */

ip nat pool tech 192.1.1.100 192.1.1.120 netmask 255.255.255.0

ip nat pool deve 192.1.1.121 192.1.1.150 netmask 255.255.255.0

ip nat pool manager 192.1.1.180 192.1.1.200 netmask 255.255.255.0

ip nat pool soft-1 192.1.1.170 192.1.1.179 netmask 255.255.255.0

ip nat pool soft-2 192.1.1.151 192.1.1.159 netmask 255.255.255.0

ip nat pool temp-user 192.1.1.160 192.1.1.160 netmask 255.255.255.0

/* 将访问列表与地址池对应，以下为动态地址转换*/

ip nat inside source list 1 pool tech

ip nat inside source list 2 pool deve

ip nat inside source list 3 pool manager

ip nat inside source list 4 pool soft-1

ip nat inside source list 5 pool soft-2

/* 将访问列表与地址池对应，以下为复用动态地址转换*/

ip nat inside source list 6 pool temp-user overload

/* 将访问列表与地址池对应，以下为静态地址转换*/

ip nat inside source static 172.18.100.168 192.1.1.168

ip nat inside source static 172.18.100.169 192.1.1.169

ip classless

ip route 0.0.0.0 0.0.0.0 Serial0 /* 设置一个缺省路由 */

! /* 内部网访问地址表，他指出内部网络能访问外部网的地址段，

分别定义是为了对应

不同的地址池 */

access-list 1 permit 172.18.107.0 0.0.0.255

access-list 2 permit 172.18.101.0 0.0.0.255

access-list 3 permit 172.18.108.0 0.0.0.255

access-list 4 permit 172.18.103.0 0.0.0.255

access-list 4 permit 172.18.102.0 0.0.0.255

access-list 4 permit 172.18.104.0 0.0.0.255

access-list 5 permit 172.18.105.0 0.0.0.255

access-list 5 permit 172.18.106.0 0.0.0.255

access-list 6 permit 172.18.111.0 0.0.0.255

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line con 0

transport input none

line 1 16

line aux 0

line vty 0 4

login

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