In this section, we are going to learn about nat or network address translation. 2
But before learn about what is nat, we are going to create the topology first, 3
so we will learn with an example case. Let’s just start. 4
Let’s import 3 router, this is router 1, this is router 2, and this is router 3. 5
Then, let’s also import 1 server, 6
1 switch, and some client. 7
Router 1 will be the router in the google, 8
router 2 will become ISP or internet service provider, and then router 3 is the customer. 9
Let’s connecting router 1 to the server, 10
let’s say this is a google, and then from google router to ISP router, 11
and from ISP to the customer. 12
In the customer, we will have 2 vlan, let’s say vlan 10 and vlan 20. 13
For the ip addressing, here will be 172.16.10.1/24, 14
and then the server will be 172.16.10.2/24, 15
From google that connected to ISP will be 10.10.10.1/24, 16
and here in ISP will be 10.10.10.2/24, 17
From ISP that connected to customer will be 10.20.20.1/24, 18
and here in the customer will be 10.20.20.2/24. 19
For vlan 10, we will use 192.168.1.0/24, and for vlan 20, we will use 192.168.20.0/24, 20
Okay so this is the topology that we are going to use to learn about network address translation. 21
I think enough for this video, in the next video, we are going to start configuring this topology. 22
Thankyou for watching and see you on the next video.