DNS Configuration & Resolution
Understand how DNS works in Linux, configure DNS clients, and troubleshoot name resolution issues.
DNS: Name to Number
Welcome! Today we'll explore DNS (Domain Name System) in Linux. DNS is like the internet's phonebook, translating human-friendly domain names (like google.com) into machine-readable IP addresses (like 142.250.186.174).
Without DNS, you'd have to remember long numbers for every website or service you want to reach!
Your Linux DNS Client
In Linux, the primary configuration file for how your system resolves domain names is /etc/resolv.conf. This file tells your computer which DNS servers to ask when it needs to find an IP address for a hostname.
Think of it as your local DNS directory.
All lessons in this course
- Managing Network Interfaces
- Routing Tables & Gateways
- DNS Configuration & Resolution
- Configuring the Linux Firewall with nftables