Overview
DNS is often called the 'phonebook of the Internet.' It translates human-readable domain names (like google.com) into numerical IP addresses that computers use to find each other.
How it Works
- Query: Your browser asks a DNS resolver for an IP address.
- Hierarchy: The resolver checks various servers (Root, Top-Level Domain, and Authoritative) to find the correct address.
- Caching: Results are stored locally to speed up future requests.
Security
DNSSEC adds digital signatures to DNS data to prevent spoofing and other attacks.