DNS

DNS spoofing
DNS spoofing
  • Security

DNS spoofing involves tampering with DNS name resolution. This kind of attack poses a serious threat to internet users. Here you will learn how the different types of attack methods work, which targets attackers go after, and what you can do to effectively protect yourself.

DNS spoofing
Flush DNS
Flush DNS | How to clear the DNS Cache
  • Configuration

Operating systems, such as Windows or macOS, automatically save information about address resolution from systems and applications in the network in a DNS cache. The purpose of this practical cache is to speed up network traffic. Read on to find out why it’s useful to regularly clear the DNS cache and how exactly such a DNS flush works.

Flush DNS | How to clear the DNS Cache
How to make your Raspberry Pi into a DNS server
How to set up your own DNS server with Raspberry Pi
  • Configuration

Without the domain name system, surfing on the internet would be much more difficult, as we would have to memorize a lot of IP addresses. With the help of DNS servers, we can instead use a memorable domain name to access our favorite website. Find out how you can set up your own DNS server and learn more about the basics of the World Wide Web. All you need is the minicomputer Raspberry Pi and an...

How to set up your own DNS server with Raspberry Pi
Name resolution online: what is a DNS server?
What is a DNS server?
  • Know-how

DNS servers are required for everyday web surfing activities because they play a main role in the DNS name resolution process. But what exactly is a DNS server? We answer this question and provide you with an overview of the ten most popular public DNS servers in this dedicated article. Simply read on to find out more.

What is a DNS server?
Domain Name System
What is DNS? Overview of the Domain Name System
  • Know-how

The Domain Name System, or DNS for short, plays an important role when surfing the web because it is used to translate domain names into server IP addresses. We explain what DNS is and show you exactly how the system works and which servers are used. We also explain the risks associated with DNS so that you’re well aware.

What is DNS? Overview of the Domain Name System
DNS resolver
What is a DNS resolver?
  • Know-how

DNS resolvers are a core component of the DNS, and therefore one of the cornerstones of the internet. For the most part, however, the resolvers work in secret. The importance of DNS resolvers only becomes apparent when the connection to websites and mail servers breaks down. Our article explains how to proceed and how the technology works in detail.

What is a DNS resolver?
Raspberry Pi projects
30 Raspberry Pi projects that show the possibilities of the mini computer
  • Know-how

Raspberry Pi is an inexpensive micro-computer that can behave like a standard computer in many respects. The innovative mini device can be used for a wide range of tasks - from setting up an operating system to surfing the web, to using it as a server or a media center. Discover 30 interesting Raspberry Pi projects to try out at home.

30 Raspberry Pi projects that show the possibilities of the mini computer
DNS propagation
What is DNS propagation?
  • Know-how

If you change the DNS of a website, it can take hours or even days for the changes to reach each server. This transition phase is called DNS propagation. Our article shows you what it is, where the delay comes from, and how you can easily test DNS propagation.

What is DNS propagation?
Clear DNS cache
Clear DNS cache: how to empty the DNS resolver cache
  • Configuration

Operating systems tend to collect various information on user surfing behavior on the World Wide Web in a so-called DNS cache. First and foremost, this cache gives a good overview of your web history. However, the stored entries can also cause connection problems. We will show you how to clear the DNS cache (as a user of Windows, Mac, or Linux).

Clear DNS cache: how to empty the DNS resolver cache
DNS zone
DNS zone
  • Know-how

Many Internet users have a basic idea of what the term “domain” refers to. After all, domains are abundant on the Internet via URLs. If you delve deeper into the subject, though, it quickly becomes confusing. “Name server,” “DNS zone,” “zone file”: What do these terms mean, and how are the concepts related? We’ll shed some light on the topic here.

DNS zone