Researchers from Tsinghua University and the University of California have identified a new method that can be used to conduct DNS cache poisoning attacks. The new discovery revives a 2008 bug that ...

Domain Name System or DNS errors can prevent you from being able to navigate the Web or access specific applications. There may be several reasons why you get a DNS ...

Dig is a powerful and flexible tool for interrogating domain name system (DNS) servers. In this post, we’ll take a deep dive into how it works and what it can tell you. Dig is a powerful and flexible ...

In this day and age, it's simple and popular to have someone else change your oil, grow your vegetables, remodel your house and host your services. However, I'd argue that it's far more rewarding, ...

The most important networking command in Linux might be ping. This command lets you check if a remote machine is responding ...

If you're setting up a DNS server on a Ubuntu or Debian machine and have no idea where to begin, Jack Wallen walks you through the process of installing the service. The Ubuntu server is an incredibly ...

A non-networked computer is very rare now because most useful work involves data and services that are distributed across some kind of "internet" — that is, any network that speaks IP, public or ...

If you’re overly paranoid about computer security, you probably know that standard DNS isn’t terribly secure. Why? Because, by default, DNS queries are not encrypted. That means DNS can be (and often ...

As much as 38 percent of the Internet’s domain name lookup servers are vulnerable to a new attack that allows hackers to send victims to maliciously spoofed addresses masquerading as legitimate ...