May 17, 2022

Reverse DNS: Everything you need to know

Reverse DNS – what does it mean?

Reverse DNS, or simply rDNS, is a mechanism for translating an IP address into its matching domain name. Compared to the standard Forward DNS lookup, which resolves the domain name to its IP address, it serves the exact opposite purpose.

You can use it to establish that a specific IP address corresponds to a particular domain name. One of the most common reasons for using it is establishing trust in email servers. They use Reverse DNS lookups to make sure the email came from a legitimate source and isn’t a hoax.

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Advantages of using DDoS protection service

DDoS protection service – What is it?

DDoS protection service, or also called DDoS mitigation, is a popular added DNS service. It is a blend of several tools and methods applied to examine traffic and stop DDoS attacks. DDoS attacks are associated with a huge amount of malicious traffic created by cybercriminals. With it, they attempt to make your servers unstable and overwhelmed. As a result, the servers are not able to respond to the requests of the regular clients. 

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What is a subnet mask?

What is a network? 

A network is 2, or more devices (computers, IoT, mobiles, etc.) connected to each other for the purpose of exchanging data electronically. 

What is a subnet mask? 

The subnet mask is a separator that defines which part of the IP address is dedicated to the hosts (connected devices) and which part is dedicated to the network address. The subnet mask gives us the size of the network that we are working with. 

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CDN (Content Delivery Network) explained

Perhaps if you hear CDN, you can get confused, or you totally ignore what it is about. But what if we mention Amazon, Netflix, Facebook, or Youtube?

Well, CDN is currently as popular as such international ventures. Just you don’t know it because it works in the backstage. Without it, not only those companies but many around the world just could not deliver their content to all their users.

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