DNS

31 Guides Available

An Introduction to DNS and User Privacy

You can do everything you can to secure your Web traffic. Use a VPN when you travel.

How to Configure DNS Primary and Secondary Servers

A single web server or a database going offline is a hassle, but what if all services became unreachable?

Introduction to DNS on Linux

The Domain Name System (DNS) is a worldwide directory that maps names to addresses and vice versa.

What Is a DNS Server?

Without DNS, the internet cannot function. The effects of downed DNS servers around the world lead to outages such that business cannot happen.

Register Custom DNS Name Servers

DNS name servers (also referenced as the single word nameservers) are the backbone of the Domain Name System.

Troubleshooting DNS Issues

The most common DNS error is a simple typo, whether it’s from the client or the server.

Understand and Use IP Addresses

The Internet Protocol (IP), as described in RFC 791, is the framework that underlies the behavior of the entire internet.

Set Up Cloudflare with Linode

Cloudflare provides a content delivery network (CDN) for websites, APIs, and other applications hosted on the web.

Using Your System's hosts File

The Linux hosts file lives at /etc/hosts and it creates static associations between IP addresses and hostnames, domains, or machine aliases.

Previewing Websites Without DNS

Previewing your website before updating your domain’s nameservers allows you to stage and test your setup without redirecting viewers from your live site running on your old host.

Provide Authoritative DNS Services with NSD on Ubuntu 12.04

NSD is a lightweight yet full-featured open-source name server daemon created to provide an alternative to BIND.

Use Unbound for Local DNS Resolution on Ubuntu 12.04 LTS (Precise Pangolin)

In the default configuration, Linode systems are configured to query DNS resolvers provided by Linode. If you don’t want to use a third party DNS service on your system, you may consider running an independent DNS resolving and caching service such as Unbound DNS resolver.

Authoritative DNS Services with NSD on Debian 6

NSD is a lightweight yet full-featured open source name server daemon created to provide an alternative to BIND.

Authoritative DNS Services with NSD on Ubuntu 11.04

NSD is a light-weight yet full-featured open source name server daemon created to provide an alternative to BIND.

Use Unbound for Local DNS Resolution on Fedora 15

Use Unbound for Local DNS Resolution on Ubuntu 11.04 (Natty)

Use Unbound for Local DNS Resolution on Debian 6 (Squeeze)

Use Unbound for Local DNS Resolution on Fedora 14

Use Unbound for Local DNS Resolution on Ubuntu 10.10 (Maverick)

Authoritative DNS Services with NSD on Ubuntu 10.10

NSD is a light-weight yet full-featured open source name server daemon created to provide an alternative to BIND.

Provide Authoritative DNS Services with NSD on Fedora 14

NSD is a lightweight yet full-featured open source name server daemon created to provide an alternative to BIND.

Authoritative DNS Services with NSD on Ubuntu 10.04

NSD is a lightweight yet full-featured open source name server daemon created to provide an alternative to BIND.

Use dig to Perform Manual DNS Queries

What is dig?dig is a command line DNS querying utility that allows you to diagnose issues with domain name resolution.

Provide Authoritative DNS Services with NSD on Fedora 13

NSD is a lightweight yet full-featured open source name server daemon created to provide an alternative to BIND.

Use Unbound for Local DNS Resolution on Fedora 13

Use Unbound for Local DNS Resolution on Ubuntu 9.10

Provide Authoritative DNS Services with NSD on Ubuntu 9.10 (Karmic)

NSD is a lightweight yet full-featured open source name server daemon created to provide an alternative to BIND.

Use Unbound for Local DNS Resolution on Ubuntu 10.04 LTS (Lucid)

Provide Authoritative DNS Services with NSD on Debian 5 (Lenny)

NSD is a lightweight yet full-featured open source name server daemon created to provide an alternative to BIND.

Use Unbound for Local DNS Resolution on Debian 5 (Lenny)

Overview of DNS and DNS Records

The Domain Name System (DNS) is the Internet’s address book. DNS directs web traffic to your Linode and email to your inbox by mapping memorable domain names like example.

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