Glossary term
What is NAT (Network Address Translation)?
NAT stands for Network Address Translation.
In System Design
Lets many private devices share one public IP. Example: Your home Wi-Fi router: all phones and laptops appear online as one address.
Learn it properly · System DesignLesson 1: What Happens When You Type a URL and Press Enter?The one second between pressing Enter and seeing a page hides a DNS lookup, a trip through a dozen routers, two handshakes and a server doing real work. Every later lesson zooms into one part of that journey.In Networking for Developers
A router rewriting addresses in packets so many private machines can share one public address.
Learn it properly · Networking for DevelopersLesson 1: IP Addresses, Subnets, NAT and RoutingIPv4 and IPv6, CIDR notation worked by hand, private ranges, NAT, routing tables and how a packet finds its way.