Network Address translation NAT configuration on Mountain Sky's Router

NAT (Network Address Translation) Configuration on Mountain Sky's Router

To configure the Mountain Sky Router for NAT the following commands need to be introduced to achieve the objective, knowing that:

- Router has interface serial 0 IP address: 150.150.195.2 mask:255.255.255.128
- Router has interface ethernet 2 IP address: 192.168.188.1 mask 255.255.252.0 (with subinterfaces) (this is the interface for the student's network, from VLAN3)

So a NAT configuration for Mountain Sky's router should use commands:

interface serial 0
     ip address 150.150.195.2 255.255.255.128
     ip nat outside
interface ethernet 2
     ip address 192.168.188.1 255.255.252.0
     ip nat inside
ip nat inside source list 101 interface serial0 overload
access-list 101 permit ip 192.168.0.0 0.0.255.255 any

Or using pools:
ip nat pool net-link 150.150.195.202 150.150.195.254 prefix-length 25
ip nat inside source list 101 pool net-link