CCNA 實驗：PAT

網路圖：

地址表：

實驗目標：

1. PAT 基本配置。

設定檔：

壹：

（1）步驟1：配置路由器R1 提供NAT 服務

Router0(config)# ip nat pool NAT 88.88.88.3 88.88.88.50 netmask 255.255.255.0

Router0(config)# ip nat inside source list 1 pool NAT overload 

//配置PAT

Router0(config)# access-list 1 permit 192.168.1.0 0.0.0.255

Router0(config)#interface g0/2

Router0(config-if)#ip nat inside

Router0(config)#interface g0/0

Router0(config-if)#ip nat outside

//配置NAT 外部介面

Router0(config)#router rip

Router0(config-router)#version 2

Router0(config-router)#no auto-summary

Router0(config-router)#network 88.88.88.0

貳：

（2）步驟2：配置路由器R2

Router2(config)#router rip

Router2(config-router)#version 2

Router2(config-router)#no auto-summary

Router2(config-router)#network 88.88.88.0

Router2(config-router)#network 2.0.0.0

叁：

（3）步驟3：查看NAT表

Router0#sh ip nat translations

Pro  Inside global     Inside local       Outside local      Outside global

icmp 88.88.88.4:13     192.168.1.2:13     88.88.88.2:13      88.88.88.2:13

icmp 88.88.88.4:14     192.168.1.2:14     88.88.88.2:14      88.88.88.2:14

icmp 88.88.88.4:15     192.168.1.2:15     88.88.88.2:15      88.88.88.2:15

icmp 88.88.88.4:16     192.168.1.2:16     88.88.88.2:16      88.88.88.2:16

Router0#sh ip nat statistics

Total translations: 4 (0 static, 4 dynamic, 4 extended)

Outside Interfaces: GigabitEthernet0/0

Inside Interfaces: GigabitEthernet0/2

Hits: 25  Misses: 211

Expired translations: 24

Dynamic mappings:

-- Inside Source

access-list 1 pool NAT refCount 4

 pool NAT: netmask 255.255.255.0

       start 88.88.88.3 end 88.88.88.50

       type generic, total addresses 48 , allocated 1 (2%), misses 0