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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How to Set Up and Manage Sudo Permissions

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What Is Sudo?

sudo-sudoers

credit to: XKCD

Sudo is a Linux program meant to allow a user to use root privileges for a limited timeframe to users and log root activity.  The basic thought is to give as few privileges as possible to a user while allowing  the user to accomplish a task. The term “Sudo” means substitute user, and do. It is a program used for managing of user permission based on a system configuration file. It allows users to run programs with the privileges of another user, by default, the superuser. The program is supplied for most UNIX and Linux-based operating systems.

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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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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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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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