Networking

What is a Domain Name System (DNS) & How Does it Work?

April 12, 2023

Domain Name System (DNS) first emerged in the early 1980s. It represents a system of interconnected servers that store registered domain names and Internet Protocol (IP) addresses. As the Internet grew, it became an unavoidable part of online interaction.

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How to Fix DNS_PROBE_FINISHED_NXDOMAIN?

April 6, 2023

This article provides steps to try and fix the DNS_PROBE_FINISHED_NXDOMAIN error. The error indicates a domain is non-existent.

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DNS Configuration: Everything You Need to Know

March 23, 2023

Every network administrator needs to know how to change DNS configuration. Learn how to configure DNS on Windows, Linux, and macOS in this step-by-step guide.

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How to Fix DNS_PROBE_FINISHED_BAD_CONFIG?

March 16, 2023

The source of DNS errors is difficult to pinpoint. See nine different steps to take to resolve the DNS_PROBE_FINISHED_BAD_CONFIG error in this guide.

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How to Check DDoS Attack on Linux Server

March 15, 2023

Server owners rarely anticipate DDoS-related threats. However, the attacks can be mitigated by monitoring resources and acting promptly. Learn to check your Linux server for DDoS attacks, identify active threats, and perform quick mitigation actions by reading this tutorial.

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Error 521: What Causes It and How to Fix It

March 2, 2023

The error message "Error 521: Web server is down" indicates an issue with the server. This guide explains common causes and provides methods to troubleshoot and resolve error 521.

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How to Reduce DNS Lookups


Reducing DNS lookup time improves the performance of your website in a number of important ways, including Faster website and individual component loading, reduced network latency, and better server utilization. This article explains the importance of reducing DNS lookups and provides ten tips to optimize DNS lookups on your website.

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SSH vs. SSL: What Are the Differences?

February 23, 2023

SSH (Secure Shell) and SSL (Secure Sockets Layer) protocols are cryptographic technologies that ensure secure communication over the internet. This guide explains how they work, what makes them different, and which one to use.

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How to Set Up Static IP Address for Raspberry Pi

February 22, 2023

Setting up a static local network IP address on a device ensures that its location on the network persists across reboots. Static IPs are especially useful when accessing devices remotely (e.g., over SSH). This tutorial shows you how to configure a static IP address on Raspberry Pi.

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How to Change the SSH Port?

February 13, 2023

This tutorial shows the steps required for changing the default SSH port into a different one. A different port adds an extra layer of protection to the connection.

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