How to Edit Your DNS Hosts File

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One of the most powerful tools available to anyone working on their site during a migration is their computer’s “hosts” file. The hosts file is used to map domain names to IP addresses, and can be used as an alternative to DNS. It also allows you to specify the IP address to which a website resolves on your computer, regardless of what may be published in the site’s DNS zone file.

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How to Perform a Reverse DNS Lookup

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The purpose of DNS is typically used to resolve a domain name to an IP address. This act is known as a forward resolution and is performed every time you visit a site on the internet. Reverse DNS (or rDNS), as its name implies, is a method of resolving an IP address back to a domain name.

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Automating DNS With Zone Delegation and the Storm API

Reading Time: 2 minutesAlthough the term DNS zone delegation may seem new to you, you have been using zone delegation without even realizing it. When you tell your domain’s registrar what nameservers you are using for a particular domain, you are delegating the zone for that domain. Single zone delegation will work for most people. In fact, most use a single zone file to reference multiple hosts, or multiple subdomains residing on a single host. However, there are cases where it may be beneficial to perform additional delegation. Continue reading “Automating DNS With Zone Delegation and the Storm API”

How To: Lowering Your DNS TTLs

Reading Time: 2 minutesWhenever making DNS changes, lowering your TTLs (Time To Live) 24 hours ahead of time will reduce the amount of time that your change takes to propagate. This article assumes that you are running BIND on a Linux server, that you already have an understanding of what DNS is, the different types of DNS entries, and how DNS works. Please note: The incorrect editing of your zone file can take your site offline. All editing must be done on the authoritative nameservers for the given domain. Continue reading “How To: Lowering Your DNS TTLs”

New User Tutorial: Basic Shell Commands

Reading Time: 3 minutesNow that you know how to SSH into your server it is important to familiarize yourself with some basic command line tools. Continue reading “New User Tutorial: Basic Shell Commands”

How to Understand and Modify MX Records

Reading Time: 2 minutesMX (Mail eXchanger) records are like an address for your domain’s email. The MX record tells the rest of the internet where to send your email. Continue reading “How to Understand and Modify MX Records”

How to Use the Dig Command in Linux

Reading Time: 3 minutesThe dig command is a command that is used for querying DNS name servers for information about host addresses, mail exchanges, name servers, and related information. Continue reading “How to Use the Dig Command in Linux”