How to Decode DNS Zone Types

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What is a DNS Zone?

A DNS Zone is part of a group of components that make up DNS. These objects are managed by an administrator or organization in a granular manner. DNS zones can contain varied information about a domain and subdomains. Multiple zones can also exist on the same server.  DNS information is stored within a text file called a DNS zone file.

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Understanding the DNS Process

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What is DNS?

DNS stands for Domain Name System (DNS) services. When we access a website, we are using this service to locate the server where the domain’s website is located. When browsing the web, we usually type in a domain name like www.google.com into our browser. This is better than trying to remember an IP address linked to a Google server.

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DNS: An Overview

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What is DNS?

The Domain Name Service (or DNS) is the key to the presence of your server on the internet. You are probably aware your domain has an “IP” address, which stands for Internet Protocol; that number is your domain’s literal web address on the internet. A typical IP address is a series of four numbers called octets that are identified like so: 10.10.10.10.  You can think of your IP address as being similar to a postal address. The IP address is the exact location where your domain lives. I usually explain it like this;

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What is DNSSEC?

Reading Time: 2 minutesDomain Name System Security Extensions or DNSSEC signs DNS Record Sets (RRsets) at each DNS zone level. This allows one to verify the DNS record they are receiving has not been altered.

For example, manage.liquidweb.com has these zone levels:

  • Root (.)
  • com, org, net
  • liquidweb
  • Manage

DNS Record Set (RRsets) is a group of records with the same record type, for example all DNS A records are one RRset.

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DNS Record Types

Reading Time: 2 minutesOne of the many challenges that we may face while attempting to make modifications to a zone file, is knowing what the different records are used for.  This article highlight several of the commonly used records in an attempt to help demystify them.

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Find (View) Default Zone for Firewalld on CentOS 7

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Pre-Flight Check

  • These instructions are intended for finding (viewing) the default zone in Firewalld on CentOS 7 via the command line.
  • I’ll be working from a Liquid Web Core Managed CentOS 7 server, and I’ll be logged in as root.

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Find (View) Active Zones in Firewalld on CentOS 7

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Pre-Flight Check

  • These instructions are intended for finding (viewing) active zones in Firewalld on CentOS 7 via the command line.
  • I’ll be working from a Liquid Web Core Managed CentOS 7 server, and I’ll be logged in as root.

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How To Flush Your Local DNS Cache

Reading Time: 2 minutesIf your computer has trouble reaching a certain website or server this may be due to a corrupt local DNS cache. This guide will show you how to clear your local DNS cache (“flush” it) for several operating systems.

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