Network Archives - Mark Waters

Why is the PTR record so important?

by MarkMay 30, 2022May 30, 20220

PTR record is not one of the most popular DNS record types, but it is absolutely important. Why? We will explore this and its main purpose in this article. So, let’s start.

PTR record: Meaning

The reverse equivalent of an A record is known as a PTR record. The PTR record maps an IP address to a hostname, whereas the A record translates a domain name to an IP address. As a result, the Pointer record assures that your IP address connects to your host in an official manner.

If you’re utilizing both internal and external mail servers, you’ll need to set up the Pointer record. This record improves the reliability of sending servers by allowing the receiving end to verify your IP address’s hostname. It’s a great strategy to defend yourself from all kinds of spammers.

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Reverse DNS: Everything you need to know

by MarkFebruary 25, 20220

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

by MarkNovember 17, 2021November 17, 20210

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?

by MarkJune 21, 2021October 11, 20210

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

by MarkMay 18, 2021October 11, 20210

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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