23 articles found
Everything you need to know about Wazuh — the leading free, open-source SIEM and XDR platform. Covers architecture, agent deployment, intrusion detection, log analysis, file integrity monitoring, vulnerability detection, compliance (PCI DSS, HIPAA, GDPR), Wazuh vs Splunk vs ELK comparison, Docker deployment, custom rules, and real-world SOC integration....
The definitive guide to hardening your Linux servers in 2026. Covers SSH hardening, firewall configuration with firewalld and nftables, SELinux enforcement, kernel security (sysctl), automatic patching, rootkit detection, audit logging, fail2ban, CIS benchmarks, file integrity monitoring, and a full post-install hardening checklist — with commands you can run today....
The definitive guide to passing the Red Hat Certified System Administrator (RHCSA) EX200 exam in 2026. Covers every exam objective in detail: essential system administration, user management, storage with LVM and Stratis, networking, firewalld, SELinux, containers with Podman, shell scripting, boot troubleshooting, and time management strategies for the performance-based exam....
The definitive guide to Ubuntu 24.04 LTS (Noble Numbat) server administration. Covers installation, initial hardening, AppArmor, UFW firewall, Nginx, PHP, databases, Docker, Snap packages, automatic updates, performance tuning, and everything you need to run Ubuntu in production....
Everything you need to know about Rocky Linux 9 — the free, community-driven RHEL-compatible enterprise Linux distribution. Covers installation, initial setup, security hardening, package management, web server deployment, and why Rocky Linux deserves a place in your server infrastructure....
A complete, production-tested guide to migrating your CentOS 7, 8, or Stream servers to AlmaLinux 9. Covers pre-migration checks, the almalinux-deploy tool, post-migration verification, common pitfalls, and rollback strategies....
A thorough comparison of AlmaLinux and Ubuntu Server — the two leading choices for production Linux servers. We cover stability, package management, security, performance, support, and which one fits your infrastructure best....
A detailed, no-nonsense comparison of the three most popular Linux certifications — RHCSA, LFCS, and LPIC-1. We break down costs, difficulty, career impact, and which one fits your goals best....
A home lab is the fastest way to learn Linux, networking, Docker, and DevOps hands-on. This step-by-step guide shows you exactly what hardware to buy, what software to install, and what projects to build — even on a tight budget....