DNS Filter: What is it and how can it help with data traffic?

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I bet you've read about DNS filters somewhere and wondered: what else can this alphabet soup do for my company?

Then you're in the right place! In this article, we'll show you what it is, how to use it, its role in data traffic, and other points that we're sure will help you understand a little more about the subject.

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So, what is DNS?
Domain Name System (DSN) is a type of filter used to block malicious websites, inappropriate or even dangerous content, ensuring jamaica number dataset your company and your customers' data is safe .

In other words, the DNS filter is part of the strategy for controlling your employees' access to portals while they are connected to the network.

DNS, in Portuguese Domain Name System , is essential for accessing any content on the internet. This is because nothing can be loaded before the DNS process occurs, that is, it equates IP addresses in domains , which, in fact, makes life easier for users, since it is not necessary to remember these complicated numbers every time they use the same portal.



And how does DNS filtering work?
Typically, DNS filters work as follows: for addresses that could be or are a risk to your network security , they do not resolve the domain to the IP.

Many of these services already use lists, the famous blacklists, to assist in this process, which can be by domain or by IP address.

Most IP lists used for this type of filtering include fake websites intended for cybercrime, phishing, malware, adult content, among others.

As soon as a person tries to access a domain, the computer sends a query to the DNS resolver used by the company. If it is a malicious website, the user will not be able to access it and, therefore, will not suffer any type of scam, such as phishing.



And how does this IP block list work? Don't worry, we'll explain it to you so you don't have any doubts:



Malicious sites
By preventing malicious pages from being loaded, the DNS filter prevents users, when accessing these sites, from downloading software that aims to carry out attacks on their network and, consequently, put information at risk.