What is DNS Attack and How Does it Work?


Nowadays, a cyber attack prevails. Even they are becoming a big headache for lots of IT services and business. Over the last few years, some huge names such as Google, The New York Times, etc. have actually fallen victim to cyber-attacks.

DNS Attack is a type of cyber attack that makes use of the weakness or vulnerability in a Domain name system. Today, the internet has actually developed into an integral part of our life. From interacting to banking to going shopping to taking a trip, every aspect of our life is around the web.

Considering that the web has actually been widely used, cybersecurity is a primary issue for most web users as from time to time we hear the news about cyber attacks.

In todays post, we will familiarize about DNS Attacks, how they work and how to eliminate against them.

What is DNS Attack?

Indeed, DNS attacks happen when a hacker is able to find weaknesses to exploit in the DNS (Domain Name System).

Hackers take benefit of vulnerabilities to make DNS attacks possible. In order to comprehend, how DNS attacks in fact work, you will need to first understand how DNS works.

For those who dont know, the domain name system is a protocol that translates an alphabetic domain into IP address. In other words, its major function is to convert an user-friendly domain name into a computer-friendly IP address.

How DNS Works?

Domain Name System is rather effective yet it appears less focused on security. Maybe thats why we are discovering various kinds of DNS attacks.

DNS servers operate in a loop which indicates they have the ability to query each other to discover the DNS server that knows the proper IP address of the domain name.

As quickly as the DNS resolver locates the IP address, it returns the IP address to requesting program. DNS caches domain addresses for future use.

To reduce the possibilities of DNS attacks, server administrators should take some needed actions. They can use an upgraded variation of DNS software and routinely set up servers to replicate. At a personal level, users can flush their DNS cache to prevent security threats. If you do not understand how to flush DNS, checked out a resourceful post at hostinger.com.

The DNS resolver searches its own regional cache and inspect if it already has the IP address for that domain. It queries a DNS server to check if it knows the accurate IP address for that domain if it does not discover it in the local cache.

When a user types a domain in the browser, a program offered in the os called DNSresolver look for the IP address of that domain.

How Hackers Use DNS?

The greatest concern with the DNS system is that if on any account a hacker has the ability to discover a method to change the licensed IP address of a website with a rogue IP address, then anybody attempting to gain access to that website will be sent to a bogus address. The user would not have any concept that he is accessing the wrong address.

Among the major issues with the DNS server setup is that it does not remember its default setup. Enemies make the most of this loophole.

Kinds Of DNS Attack

Many popular websites such as Reddit, Spotify, Twitter have also complained about their inaccessibility to thousands of their users.

This is one of the most popular phishing techniques enemies utilize to take details. They never recognize that are accessing a fake or rogue site due to the fact that users type the proper domain address in their web browsers.

As DNS attacks are ending up being all too typical, we ought to learn to identify DNS attacks so that we can take on the circumstance better. Lets take a look at kinds of DNS attacks.

Zero-day attack– In this type of attack, the assaulter exploits a formerly unidentified vulnerability in the DNS server software application or procedure stack.

Quick Flux DNS– Hackers swap DNS records in and out at high frequency to redirect DNS requests. This method assists the aggressor prevent detection too.

Over the previous couple of years, a sudden boost has been discovered in DNS attacks. And this attack is not limited to small websites only.

For that reason, it becomes challenging to detect this attack. Often, users are not able to discover it up until the time to live (TTL) ends. TTL or time to reside in the time till DNS resolver remembers the DNS question before it gets ended.

The very best technique to avoid DNS cache poisoning attacks must be time to time cleaning of DNS cache.

DNS-Spoofing– DNS spoofing is also understood as DNS cache poisoning. Attackers or hackers corrupt the whole DNS server by changing the authorized IP address with the bogus IP address in the servers cache.

Also, you can check out Top 10 Dangerous DNS Attack Types and The Prevention Measures

DDoS Attack on DNS

Get routine insight into what is really going on in a network. You can take the aid of innovations like IPFIX, NetFlow, etc. for the very same.

DNS server attacks can be a huge network security concern. Therefore, it ought to not be ignored by businesses. They must execute advanced safeguards to decrease and avoid the effects of such attacks.

DNS attacks can be lethal to your security. You must take every possible step to prevent them.

Have you ever been a victim of a DNS attack? How did you avoid them? Do share your experiences with us.

Final Words

DDoS attacks normally get in into the network that has excessive package per 2nd rates. Consider some excellent solutions for it.

How you can protect this attack depends upon the function of your systems in the environment. You may take the following steps.

The DDoS attack is referred to as a Distributed Denial-of-service attack. It generally develops when multiple systems flood the resources of a targeted system. Attackers can utilize this attack against different types of systems that include DNS servers too.

A DDoS attack can crash the entire DNS server and make users not able to access the web. They will be able to gain access to websites they have actually accessed recently if they are conserved in the local cache.

You can follow us on Linkedin, Twitter, Facebook for day-to-day Cybersecurity updates

DNS Attack is a type of cyber attack that exploits the weak point or vulnerability in a Domain name system. To minimize the possibilities of DNS attacks, server administrators should take some essential actions. The DDoS attack is referred to as a Distributed Denial-of-service attack. Attackers can use this attack against different types of systems which include DNS servers.

Have you ever been a victim of a DNS attack?