dnssystem.org

What is a PTR record, and do I need to create one?

February 17, 2021August 26, 2021 Mario No Comments Featured

In the sea of DNS records, there are a few that you really must learn. The PTR record is one of them. If you want to know why it is so important, you came to the right place.

What is a PTR record?

PTR record is a type of DNS record, also known as pointer record, that serves the purpose of linking an IP address to a domain name. It is a prove, that this exact IP address that somebody is checking really is related to the domain name, and it is not a scam. The PTR record has the purpose of verifying different elements or services, like a mail server.

How to check PTR records?

What’s inside a PTR record?

DNS, DNS records

Private DNS server – Definition & Details

April 11, 2022April 11, 2022 Mario No Comments

Our topic today is the Private DNS server. Have you ever heard something about it? If not, don’t worry. You have come to the right place. Today we will explore its main purpose and why it is so beneficial. But first, before we go on to the Private DNS server, let’s define the Domain Name System (DNS).

What is DNS?

The Domain Name System, or DNS for short, is a decentralized namespace that is organized. Its major goal is to help users browse inquiries, discover the host they’re looking for, and respond swiftly. The DNS was created in the 1980s to replace the wasteful HOSTS.txt file, which contained all of the current hosts. Because of its scalability and speed, DNS is superior.

In a nutshell, DNS is a service that maps domain names to IP addresses and may also be used to map services to hosts, verify distinct hosts and services, and so on.

DNS, Servers

Authoritative DNS server – everything you need to know

April 4, 2022April 12, 2022 Mario 1 Comment

The world of DNS is complicated, and there are a lot of small details that we should think about. The DNS is a mechanism for domain resolution. The whole system involves many different DNS servers on different levels – root, TLD, domain name, subdomain. Now we will talk about the authoritative DNS server of the domain name level. Why do you need it, and what it does.

In the following article you can find additional information about Authoritative DNS Servers!

What is an autoritative DNS server?

DNS

rDNS: What is it and how does it work?

January 21, 2022January 21, 2022 Mario No Comments

The rDNS (Reverse DNS) process is only one aspect of the Domain Name System’s operation. The purpose is to connect an IP address to a domain name. It’s a tool that can be used in both the IT and business fields.

rDNS – meaning

As we know, DNS is the process by which we use a domain name to reach its corresponding IP address. Reverse Domain Name System or rDNS is a procedure where you use the IP address to get information about the domain name. So this process is the opposite of standard DNS resolution.

DNS, DNS records

Anycast DNS explained

October 6, 2021October 6, 2021 Mario No Comments

Better, faster, stronger. We all want to improve the performance of our websites. To make them stand out from the crowd of millions of sites and prove a better service for our users. One useful tool in this race is Anycast DNS that will shorten the time for domain resolution and thereby lower the latency for the clients who want to use our sites.

Let’s explain Anycast DNS!

Read More “Anycast DNS explained” »

DNS, Servers

What is a DNS MX record, and how does it work?

September 16, 2021September 16, 2021 Mario No Comments

The DNS MX is a DNS record that has an essential role in the proper functionality of your email server. It points to the right email server or servers for accepting emails for the domain name. Without it, the sending email servers will not know where is the target of the emails and can’t ensure…

DNS records

Recursive DNS server – an overview.

August 10, 2021August 26, 2021 Mario No Comments

Domain Name System (DNS) is a great invention no matter its credit is not always recognized. And that is because it’s absolutely needed but invisible for regular users. But the situation is different for network administrators, IT teams, and online business owners. They all know that to make websites, and other resources accessible for people means profits for them.

There is no gain without Domain Name System functionality. Everything you want to offer online, from content to products or services, needs to be shown through websites. And to load them for clients can’t happen without the DNS resolution.

We can talk long about DNS functionality, but let’s focus this time on one important DNS component, the recursive DNS server.

DNS, Servers

What is DNSSEC?

July 24, 2021July 27, 2021 Mario No Comments

You can see DNSSEC as a patch to otherwise unsafe DNS. It brings cryptography to the table and a whole line of trust, which guarantees every level and provides top-notch security for your domain.

What does DNSSEC mean?

The whole meaning of DNSSEC is a mouth full – Domain Name System Security Extensions.

The original DNS is fast and reliable, but it lacks security. It wasn’t that of a problem when it was first created. Later, in 1993, the Internet Engineering Task Force (IETF) finalized specifications for DNS data encryption standards. It got in use in 2005, and its latest revision is from 2010.

The DNSSEC aims to stop the DNS cache poisoning and alteration of the DNS data that could happen if it is not activated.

The DNSSEC involves all levels of a domain, including the root, TLD, and the part that you can manage.

It uses a combination of public and private keys, where each upper level can verify the level below.

It is a chain of trust. If one level fails, the chain is broken, and the data cannot be trusted.

Find out more information about DNSSEC!

Why do we need DNS Failover?

July 7, 2021April 19, 2022 Mario No Comments

Every website or network owner knows that having an alternative plan in case of an outage is a must. There are different ways to get redundancy not to be affected if a server is attacked, down due to maintenance, or broken. Usually to have not one, but more alternatives to guarantee your up-time are totally welcome.

This said, DNS Failover is a technology you should understand and consider for your business.

DNS

Round – Robin DNS explained

April 21, 2021August 26, 2021 Mario No Comments

Round-Robin DNS is a simple mechanism for managing DNS load balancing. This task is not done through hardware but via a DNS server known as an authoritative nameserver.

When you deploy Round-Robin in a DNS server, this will save different A records. Each of them has different IP addresses, but all with the same domain name. Every time this DNS record is requested, it will deliver a response (IP address) by its order. And every IP address used to respond to a request will be put at the end of a line to be used again. You have multiple IP addresses working on a constant rotation cycle.

This mechanism is really useful if you have your website’s content hosted on different redundant servers located at separate points of the globe. The authoritative nameserver will use this rotation cycle to answer with a different IP address. By doing so, it will load balance the traffic.

DNS

What is an SPF record?

April 13, 2021August 26, 2021 Mario No Comments

Emails from your company are very important and delicate stuff. They are part of your image, the trustability clients have on you, and therefore, an attractive tool for criminals to get profit through phishing and other illegal activities. Suspicious use of them can be painful for a business and a reason to be banned.

SPF means Sender Policy Framework. This DNS record is in itself a system that validates legitimate emails. SPF record recognizes the mail servers allowed to send emails in your company’s name (domain). It enhances the trustability of your email server while preventing domain spoofing.

Read More “What is an SPF record?” »

DNS records