System Administration Archives

Networking tutorial - IT technology blog

Deploying phpIPAM on Linux: Professional IP, VLAN, and Subnet Management

May 18, 2026

Ditch the spreadsheets and manage your network like a pro. This guide shows you how to deploy phpIPAM on Linux to centralize IP, VLAN, and Subnet management.

Linux

Stop the Linux OOM Killer from Crashing Your Production Apps

May 15, 2026

Is the OOM Killer terminating your critical Linux processes? Learn how to diagnose logs, adjust process priorities, and tune kernel memory settings to keep your server stable.

Security

Linux Server Security Auditing: Automating Hardening with Lynis

April 15, 2026

Discover how to use Lynis to automate Linux security audits. This guide covers installation, interpreting the Hardening Index, and practical steps to secure your kernel and file system permissions.

Linux

Centralized Log Management on Linux: Your Rsyslog and Logrotate Playbook

March 25, 2026

Centralized log management is vital for monitoring and troubleshooting Linux environments effectively. This guide provides a hands-on approach to setting up rsyslog for collecting logs and logrotate for managing their lifecycle. Learn to configure your Linux systems for robust, efficient log handling.

Linux

Immutable Linux: Taming Production Servers with Fedora Silverblue & NixOS

March 22, 2026

Tired of production servers crashing after routine updates or suffering from configuration drift? Immutable Linux distributions like Fedora Silverblue and NixOS offer a powerful solution. This article explains how these innovative approaches provide read-only base systems, transactional updates, and easy rollbacks to bring stability and predictability back to your server management.

Security

Linux Server Hardening Checklist: Prevent 2 AM Security Incidents

March 12, 2026

A server compromise at 2 AM is a nightmare no IT professional wants. This guide provides a practical Linux server hardening checklist, helping you understand common vulnerabilities and implement proactive security measures. Learn to secure your systems with strong passwords, robust firewalls, regular updates, and more to prevent incidents.

Programming

Python Basics for System Administrators: Your Essential Guide

March 11, 2026

Discover how Python can transform your system administration tasks. This guide covers essential Python basics, from installation and first scripts to advanced concepts like modules, file I/O, and subprocess management, all tailored for IT professionals looking to automate and streamline operations.