Dimitri Nek | Linux Tutorials for Beginners

The PHP GD library is a graphics library that is used to create dynamic images on the web. It is an open-source and widely used library in PHP applications. However,…

How to Install HAProxy on Fedora

Ensuring that web traffic is distributed efficiently is paramount in web hosting and server management. One might encounter issues related to server overloads, which can lead to slow response times…

How to Install HAProxy on Debian Linux Server

Ensuring the smooth and efficient distribution of network traffic is paramount in web hosting and web server optimization. Many administrators and webmasters face the challenge of managing high traffic loads,…

How to Install PHP using Remi Repository on CentOS

PHP is a widely-used open-source scripting language primarily employed for server-side web development. As new PHP versions are released, they introduce improved performance, security enhancements, and new features that can…

How to Enable SSH Root Login on CentOS

Secure Shell (SSH) is a widely used protocol for accessing remote machines securely over the network. It is often used to administer servers and network devices, and it provides a…

How to Enable SSH Root Login on Ubuntu

Secure Shell (SSH) is a cryptographic network protocol used for secure data communication, remote command-line login, remote command execution, and other secure network services between two networked computers. By default,…

How to Setup Nmap Tool for Security Tests

How to Setup Nmap to Perform a Security Vulnerability Test on a Linux Machine

Ensuring the security of your web server is paramount. One of the most popular tools for assessing the security posture of a network is Nmap. Originally designed as a network…

How to Interrupt a Command that is Running in the MacOS Terminal

Sometimes, you may need to interrupt a command that is running in the MacOS Terminal, for example, if the command is taking too long to execute or if you need…

How to Configure HAProxy for HTTP to HTTPS Redirection

In the modern digital landscape, securing your web traffic has become a necessity. This is where HTTPS, or HTTP Secure, comes into play. It is an extension of the Hypertext…

How to Start, Stop, and Restart the PostgreSQL on a Linux CentOS System

PostgreSQL is a widely used, powerful, and open-source relational database management system. In this short tutorial, we will demonstrate how to start, stop, and restart the PostgreSQL database server on…

TCP keepalive Recommended Settings and Best Practices

TCP keepalive is a mechanism used to check the status of an idle connection by periodically sending “keepalive” packets. If there is no response after a certain number of attempts,…

How to Configure TCP keepalive Settings on Linux (CentOS, RHEL, Fedora)

TCP keepalive is a mechanism used to determine if a network connection between two hosts is still active. It does this by periodically sending “keepalive” packets over the connection. If…