DevOps - Step By Step Learning : Part 18 (NAT, PAT For Inner Private with Outer Public Network Handshaking)
Other Parts of This Series: Part 17: DevOps - Step By Step Learning : Part 17 (ARP Is The Bridge Between Data Link and Network Layer) Part 19: DevOps - Step By Step Learning : Part 19 (TCP and UDP Are The Backbone of Transport Layer) DevOps Networking NAT & PAT (Photo Credit: Unsplash) Story: Rasel found that the one and only unique need to communicate with each other throughout the internet is an IP address. Every host/device needs a universally unique IP address so that routing can be possible from source to destination. Also, while Rasel played with packet tracing and IP addresses, he observed that the inner and outer IPs were not the same. When a packet passes through the router to the internet, then an IP change happens. Besides this, the most used IP address scheme is IPv4, which has 4 bytes or 32 bits, and the universally unique IP can be 2^32 or ~4.2 billion IP addresses. But as the Internet grew in popularity, the industry realized there would one day be more hosts on the Internet than there were IP addresses available. So IPv6 was created, but it is complex and not mostly used. So Rasel wanted to know the magic behind this IP changing. ...