Follow the screenshots :)
Get the interfaces configured on all the routers. IP, description etc.
We need to now configure R2 to NAT anything coming in (source) with IP address of 192.168.1.4 (R4 fast1/0 IP) to 220.127.116.11 (R2 fast1/1 IP). There by creating a 1 to 1 NAT. 192.168.1.4 is NAT'd to 18.104.22.168.
When I first learned NAT these 4 terms always confused me. So I am going to try and water it down :)
- Inside global - This is the address as the outside sees it.
- Inside local - This is the address that other inside hosts can see.
- Outside local - This is the address that the inside is trying to go to.
- Outside global - This is how the outside sees it.
An example should clear things up. Let's ping 22.214.171.124 (R3 fast1/0 IP) from R4 (192.168.1.4).
Some NAT troubleshooting commands are: