3 Common DNS attack types and How to Fight Them

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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Primary DNS server explained

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 propagation – Everything you need to know

DNS propagation is a process that requires time, and you probably wonder what is happening during it. So let’s explain a little bit more about it.  

DNS propagation explained 

DNS propagation is a process that includes updating the modifications that you make in your DNS. When you create new DNS records or edit your existing ones, all of them are stored in the authoritative DNS name server. 

Although there are many DNS servers on the network. Such as the recursive ones, which are located at various points of the planet. Every one of them has to be updated for the modifications to function properly. It is important to remember that all of these servers are going to be elements of the DNS resolution process.

DNS propagation is the time that it will be needed to propagate, to update the modifications to all of the recursive servers.

How to speed up DNS propagation?

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What is the DNS NS record?

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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Benefits of using Backup DNS (Secondary DNS)

Having an online business pushes us to get the best out of technology to increase our chances of succeeding. Every network protocol, software, hardware, or tool can become a key component in our strategy if we know how to utilize its possibilities.

That said, let’s talk about Backup DNS (Secondary DNS) as a first step for understanding its benefits.

What’s Backup (Secondary DNS)?

If there is a second, indeed, there must be a first. Shortly said, Master, also called Primary DNS, saves the original DNS records belonging to a domain. When you add or modify DNS records configurations, Primary DNS is the place for doing that.

Backup or Secondary DNS is a server or servers, holding a copy of all domain’s data (DNS records included). That copy is directly obtained from the Master or Primary DNS. The copy is not editable. It works just for reading it. Editions or additions can only be made in the Primary DNS and propagate to the Secondary DNS.

Why do you need a Secondary DNS server?

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How does DNS work?

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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