DNS

DNS Spoofing (DNS poisoning)

DNS

Cyber-threats are behind every corner. Recently we wrote about DDoS attacks, and how hackers are using your computer and many connected...

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Why does DNS use UDP?

DNS

There are various ways of sending data over IP – TCP, UDP, DCCP, SCTP, RSVP and more. We will focus our attention on the two that are...

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What is Authoritative DNS server?

DNS

The authoritative DNS server is the final holder of the IP of the domain you are looking for. When you write a domain name in your browser,...

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A case study of the top 50 e-commerce sites and their DNS

DNS • 2 Comments

The recent Black Friday we again saw the news for record-breaking revenues and profits. Over the past few years, the web has gotten faster,...

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What is backup DNS?

DNS

DNS is the backbone of the internet. It connects all the users to the content they need. It is a constant exchange of information, but...

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What is Sender Policy Framework, and how to setup SPF record?

DNS

Have you ever received complaining messages from your users about emails sent to them from your email server, without your knowledge? Or...

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8 DNS tools for testing your servers

DNS • One Comment

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