Category: Network

DNS tunneling: Definition & Protection

DNS tunneling is a really dangerous attack that you should be aware of. In this post today, we will take place at it: its main purpose, how it works, and how you can protect against it. So, let’s begin this adventure.

The definition of DNS tunneling

As the name implies, the DNS tunneling is a Domain Name System attack type. It uses a tunnel through which it pushes malware via the client-server model.

In fact, this attack uses DNS as a communication channel to escape the victim’s firewall. Nowadays, we all use the Internet. And to be able to use it, we allow this DNS traffic to pass through our firewall. We do this because we want to access certain sites, or if we have, to access our site. Hackers know this very well and take advantage to attack us. 

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What does IPv4 mean?

Something as massive as the Internet needs a way of control, some not to be driven by chaos. Just think about the number of devices that demand connection every second worldwide. In origin, developers perhaps didn’t imagine the Internet would grow as fast and big as it is going. But they definitely thought big, so they calculated ways to keep the order. So different rules and protocols were created, like the Internet protocol (IP).

To fully understand the meaning of IPv4, we have to review some concepts. Let’s get started!

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What is TLS (Transport Layer Security)?

You often read about SSL certificates and how important they are for your site, but do you know that they are already a history? They were replaced with TLS a long time ago. So, should you use TLS encryption for your site? Let’s see.

​What is TLS?

TLS stands for Transport Layer Security, and it is one of the most popular security protocols that serves to encrypt data, authenticate it and guarantee its integrity.

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Teardrop attack – What is it and how to prevent it?

Online “attacks” are a really upsetting topic. But like with many uncomfortable things in life, ignoring them doesn’t prevent or fix them. So let’s face the fact that they exist, and they can hit us and learn more about how we can protect our online business.

What is a teardrop attack?

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How does CDN (Content Delivery Network) work?

CDN is currently very popular. It works backstage, so don’t worry if you haven’t heard of it. Without it, a lot of companies all around the world would not be able to deliver their content to their visitors.

Thanks to the CDN, you can have your music, movie, news, or social network’s images quickly in milliseconds. Right when you want them. So let’s explain a little bit more about it.

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