Category: DNS records

3 Common DNS attack types and How to Fight Them

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Do you want to learn more about DNS attack types? If the answer is yes, you are in the right place. In this article today, we will explore the 3 common ones and how to fight them. But first, let’s explain what a DNS attack actually is.

What does a DNS attack mean?

DNS was designed to reply to queries correctly and efficiently, not questioning their intent. As a result, DNS has significant flaws and the potential to be used as a conduit for cyber-attacks. So, we can say that a DNS attack occurs when hackers take advantage of weaknesses in the Domain Name System (DNS).

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DKIM record – What is it and how does it work?

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What is a DKIM record?

Domain Keys Identified Mail, or DKIM record, is a TXT DNS record that proves that the emails sent from the domain are legit. That happens through cryptographic authentication. The DNS administrator of a domain is able to set it. On the other side, the receiver could also use the DKIM record and make a DNS query for the domain to check the sender utilizing the information in the header. 

You could view the public key inside the DKIM record that the receiver is going to use to check the message.

How to check DKIM records?

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Primary DNS server explained

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DNS is a network of name servers with a tree-like structure that makes them work together to resolve domain names to their IP addresses. They do it, so billions of users can enjoy the Internet the way it is right now. One of the key elements that allows it is the DNS delegation. One higher-level server can delegate a part of the namespace to a lower DNS name server, and that way, it became the Primary DNS server for the zone it got delegated. 

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DNS TXT record explained

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Domain name system (DNS) records look like small components, but their role is really important. Those small pieces of data accomplish specific purposes. They are key for the Internet’s performance and its permanent interaction with domains.

Here you have what is important to know about the DNS TXT record.

What is the DNS TXT record?

TXT or text records are the ones that have text format data for external sources. This means sources outside domains like yours. Usually, on these records, you can find general domain information but also key data required for validation. Through TXT records, ownership of a domain can be verified, data for e-mailing can be validated, etc. 

This type of record was created for human-readable notes for administrators. But since text has become a common language for machines too, it is readable and understandable for both. This advantage makes DNS TXT records a vital tool for administrators to give instructions to machines through entering text into the DNS. 

How to create a DNS TXT record?

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What is the DNS NS record?

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The domain name system (DNS) executes different key processes for the Internet to work properly. Those tasks could not be resolve without DNS records. There are different DNS records, and each has different functions. Let’s talk about DNS NS record.

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How does DNS work?

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What is DNS?

The DNS (Domain Name System) is a decentralized system with a strict hierarchical structure for naming devices and services on the Internet and private networks. It is an essential part of how today’s global connected network, the Internet, works. 

It is responsible for directing queries for a particular domain name, like goolge.com, through all the nameservers of different levels that know where the imputed domain name is located. It helps us by answering our domain name queries with the IP address of the host (IPv4 or IPv6 or both).  

It also finds services, verifies them in different ways, links different domain names, points to servers, redirects, and, in general, makes our lives a lot easier when using the Internet.  

DNS history

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Most commonly used DNS record types

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Starting learning about DNS, you will have many challenges. It is hard to understand the matter. The best way to understand it is in bite-size chunks. This is why we want to show you the first and most commonly used DNS record types. They are easy to understand, and you will probably start using all of them from day 1. So A, AAAA, CNAME, NS, SOA, MX, PTR, and TXT records are a must.

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