NAT
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May 1, 2024
Updated May 12, 2025
26 minute read
Network Address Translation, commonly known as NAT, is a fundamental concept in computer networking. At its core, NAT is a process where a network device, typically a router or firewall, modifies IP (Internet Protocol) address information in packet headers while they are in transit. This allows multiple devices within a private network to share a single public IP address to connect to the internet. Imagine a busy office where all outgoing mail goes through a single P.O. Box; NAT functions similarly for internet traffic. This capability has become crucial for conserving the dwindling supply of IPv4 addresses and plays a significant role in network security.
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