DNS helps resolve human-friendly names to machine-friendly IP addresses. Learn how to configure a forwarding DNS server to help speed up name resolution on your network.
- [Instructor] DNS or Domain Name System…is kind of like an address book for the internet.…It manages the association of human-friendly names…with computer-friendly numeric IP addresses.…DNS records also indicate…what IP addresses can handle particular services…like mail and web.…For example, when you type in a website address,…that request goes from your browser to a DNS server…that looks it up and tells your browser…the IP address of a server to request the website from…and then your browser uses that number to get the website.…
DNS is based on records…which are text files that provide the service information…and the information that associates names and numbers.…There are a few different types of DNS servers…so let's take a brief look at them.…There are caching nameservers…which when they receive a request for DNS information…can go out onto the network and find the answer themselves…by asking other servers for the information…until it finds what it's looking for.…This process is called recursion.…Once a server gets an answer,…
- Installing Ubuntu Server
- Configuring remote access with SSH
- Configuring the firewall
- Configuring networking with Netplan
- Managing users
- Configuring for scale
- Securing an HTTP server with TLS
- Hosting an application
- Setting up a forwarding DNS server
- Sending email with Postfix
Skill Level Beginner
Lab setup1m 26s
1. Ubuntu Server
2. Securing and Monitoring Your Server
3. Configuring and Managing the Server
4. Exploring Common Services
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.