authentication

How to Configure Smart Card Authentication on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Smart Card Authentication on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure smart card authentication on ibm aix 7.1 on […]

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How to Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Apache on Ubuntu 26.04

Apache HTTP Server is one of the most widely used web servers in the world. Its modular architecture supports a huge range of functionality including URL rewriting, authentication, and SSL. This guide installs Apache on Ubuntu 26.04 LTS and configures the firewall. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A […]

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How to Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install OpenLiteSpeed Web Server on Ubuntu 26.04

OpenLiteSpeed (OLS) is a high-performance, event-driven open-source web server from LiteSpeed Technologies. It supports PHP via LiteSpeed SAPI (LSPHP) and includes a built-in WebAdmin GUI. It is significantly faster than Apache for PHP workloads and is a popular choice for WordPress hosting. This guide installs and configures OLS on Ubuntu 26.04 LTS. Tested and valid […]

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How to Set Up Two-Factor Authentication on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up two-factor authentication on ibm aix 7.1 on […]

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How to Configure Unattended Upgrades on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure Fail2Ban on Ubuntu 24.04

Fail2Ban monitors log files and automatically bans IP addresses showing brute-force patterns. This guide installs and configures Fail2Ban on Ubuntu 24.04 LTS to protect SSH and other services. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges UFW or iptables installed and active Step 1 – Install […]

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How to Secure Nginx with Let's Encrypt SSL on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install OpenLiteSpeed Web Server on Ubuntu 24.04

OpenLiteSpeed is the open-source version of LiteSpeed Web Server — a high-performance, event-driven server with a built-in WebAdmin GUI. It handles PHP natively via LiteSpeed SAPI, which is significantly faster than PHP-FPM. This guide installs it on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with […]

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How to Configure Unattended Upgrades on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

Initial Server Setup with Ubuntu 26.04 LTS

After spinning up a fresh Ubuntu 26.04 LTS server, a few essential steps harden the system, create a non-root administrative account, and prepare it for production workloads. This guide walks through every step from first login to a locked-down, up-to-date server. Tested and valid on: Ubuntu 26.04 LTS Prerequisites A fresh Ubuntu 26.04 LTS server […]

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How to Configure Unattended Upgrades on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Add and Delete Users on Ubuntu 26.04

Managing user accounts is a fundamental Linux administration task. Ubuntu 26.04 LTS provides the adduser, usermod, and deluser commands to create, modify, and remove accounts safely. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server or desktop A user with sudo privileges Basic familiarity with the Linux terminal Step 1 – Add […]

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How to Configure Unattended Upgrades on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up SSH Keys on Ubuntu 26.04

SSH key authentication is far more secure than password-based login. A cryptographic key pair — private key on your machine, public key on the server — lets you connect without a password and protects against brute-force attacks. This guide covers generating a key pair and deploying it on Ubuntu 26.04 LTS. Tested and valid on: […]

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How to Configure Unattended Upgrades on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure Fail2Ban on Ubuntu 26.04

Fail2Ban monitors log files and automatically bans IP addresses that show signs of brute-force activity — too many failed login attempts, repeated bad requests, or other malicious patterns. This guide installs and configures Fail2Ban on Ubuntu 26.04 LTS to protect SSH and other services. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]

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