IPv4 with NAT
IPv4 with NAT (Network Address Translation) is a networking technique that allows multiple devices on a private network to share a single public IPv4 address for internet access. NAT translates private IP addresses used within a local network into a public IP address when communicating with external networks, conserving the limited pool of IPv4 addresses. It also provides a basic level of security by hiding internal network structures from the outside world.
Developers should learn IPv4 with NAT when working on network configuration, security, or applications that involve internet connectivity, as it is fundamental for most home and enterprise networks. It is essential for scenarios like setting up routers, firewalls, or cloud services where IP address management and traffic routing are critical, especially in environments with limited public IP addresses.