Network Address Translation
In these videos I talk about Network Address Translation (NAT), the concept and the configuration. I also have provided you with the link to the notes for this topic.
Configuration of NAT:
You can download the notes for this topic from here.
The topology in GNS3 is here.
Interconnecting Cisco Network Devices, Part 2 (ICND2): (CCNA Exam 640-802 and ICND exam 640-816) (3rd Edition)