<Jeremy's IT Lab> Day 44: Static NAT lab

R1>en

R1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R1(config)#int g0/0

R1(config-if)#ip nat outside

R1(config-if)#int g0/1

R1(config-if)#ip nat inside

R1(config-if)#exit

R1(config)#ip nat inside source static 172.16.0.1 100.0.0.1

R1(config)#ip nat inside source static 172.16.0.2 100.0.0.2

R1(config)#ip nat inside source static 172.16.0.3 100.0.0.3

R1(config)#exit

 

R1#show ip nat translations

Pro Inside global Inside local Outside local Outside global

--- 100.0.0.1 172.16.0.1 --- ---

--- 100.0.0.2 172.16.0.2 --- ---

--- 100.0.0.3 172.16.0.3 --- ---

 

R1#show ip nat statistics

Total translations: 3 (3 static, 0 dynamic, 0 extended)

Outside Interfaces: GigabitEthernet0/0

Inside Interfaces: GigabitEthernet0/1

Hits: 0 Misses: 0

Expired translations: 0

Dynamic mappings:

 

//after ping from each PCs

R1#show ip nat translations

Pro Inside global Inside local Outside local Outside global

icmp 100.0.0.1:10 172.16.0.1:10 172.217.175.238:10 172.217.175.238:10

icmp 100.0.0.1:11 172.16.0.1:11 172.217.175.238:11 172.217.175.238:11

icmp 100.0.0.1:12 172.16.0.1:12 172.217.175.238:12 172.217.175.238:12

icmp 100.0.0.1:6 172.16.0.1:6 8.8.8.8:6 8.8.8.8:6

icmp 100.0.0.1:7 172.16.0.1:7 8.8.8.8:7 8.8.8.8:7

icmp 100.0.0.1:8 172.16.0.1:8 8.8.8.8:8 8.8.8.8:8

icmp 100.0.0.1:9 172.16.0.1:9 172.217.175.238:9 172.217.175.238:9

icmp 100.0.0.2:1 172.16.0.2:1 172.217.175.238:1 172.217.175.238:1

icmp 100.0.0.2:2 172.16.0.2:2 172.217.175.238:2 172.217.175.238:2

icmp 100.0.0.2:3 172.16.0.2:3 172.217.175.238:3 172.217.175.238:3

icmp 100.0.0.2:4 172.16.0.2:4 172.217.175.238:4 172.217.175.238:4

icmp 100.0.0.3:1 172.16.0.3:1 172.217.175.238:1 172.217.175.238:1

icmp 100.0.0.3:2 172.16.0.3:2 172.217.175.238:2 172.217.175.238:2

icmp 100.0.0.3:3 172.16.0.3:3 172.217.175.238:3 172.217.175.238:3

icmp 100.0.0.3:4 172.16.0.3:4 172.217.175.238:4 172.217.175.238:4

--- 100.0.0.1 172.16.0.1 --- ---

--- 100.0.0.2 172.16.0.2 --- ---

--- 100.0.0.3 172.16.0.3 --- ---

udp 100.0.0.1:1025 172.16.0.1:1025 8.8.8.8:53 8.8.8.8:53

udp 100.0.0.2:1025 172.16.0.2:1025 8.8.8.8:53 8.8.8.8:53

udp 100.0.0.3:1025 172.16.0.3:1025 8.8.8.8:53 8.8.8.8:53

// UDP from ping 'google.com' (using domain name)

 

R1#clear ip nat translation *

R1#show ip nat translations

Pro Inside global Inside local Outside local Outside global

--- 100.0.0.1 172.16.0.1 --- ---

--- 100.0.0.2 172.16.0.2 --- ---

--- 100.0.0.3 172.16.0.3 --- ---

// only static addresses remain