[CCNA]试验59 配置NAT静态映射

R1配置

r1(config)#int s1/2
r1(config-if)#ip ad 192.168.0.1 255.255.255.0
r1(config-if)#no sh

r1(config-if)#int s1/3
r1(config-if)#ip ad 131.1.1.1 255.255.255.0
r1(config-if)#no sh

r1(config)#router ospf 1
r1(config-router)#net 0.0.0.0 0.0.0.0 area 0

R2配置

r2(config)#int s2/1
r2(config-if)#ip add 192.168.0.2 255.255.255.0
r2(config-if)#no sh

r2(config)#router ospf 1
r2(config-router)#net 0.0.0.0 0.0.0.0 area 0

R3配置

r3(config)#int s3/1
r3(config-if)#ip ad 131.1.1.3 255.255.255.0
r3(config-if)#no sh

r3(config)#router ospf 1
r3(config-router)#net 0.0.0.0 0.0.0.0 area 0

在R1上设置静态nat

r1(config)#int s1/2
r1(config-if)#ip nat inside
r1(config-if)#int s1/3
r1(config-if)#ip nat outside
r1(config-if)#exit
r1(config)#ip nat inside source static 192.168.0.2 131.1.1.1
r1(config)#exit

开启debug

R2上ping 131.1.1.3

在R1上看现象

r1#debug ip nat
IP NAT debugging is on

r1#sh ip nat statistics
Total active translations: 1 (1 static, 0 dynamic; 0 extended)
Outside interfaces:
Serial1/3
Inside interfaces:
Serial1/2
Hits: 10  Misses: 0
Expired translations: 0
Dynamic mappings:

r1#

00:10:30: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [0]
00:10:30: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [1]
00:10:31: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [2]
00:10:31: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [3]
00:10:31: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [4]

r1#

r1#

00:10:42: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [5]
00:10:42: NAT*: s=131.1.1.3, d=131.1.1.1->192.168.0.2 [5]
00:10:42: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [6]
00:10:42: NAT*: s=131.1.1.3, d=131.1.1.1->192.168.0.2 [6]
00:10:42: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [7]
00:10:42: NAT*: s=131.1.1.3, d=131.1.1.1->192.168.0.2 [7]
00:10:42: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [8]
00:10:42: NAT*: s=131.1.1.3, d=131.1.1.1->192.168.0.2 [8]
00:10:42: NAT*: s=192.168.0.2->131.1.1.1, d=131.1.1.3 [9]
00:10:42: NAT*: s=131.1.1.3, d=131.1.1.1->192.168.0.2 [9]