SELinux vs Fapolicyd on RHEL 8/9: What’s the Difference and Why You Need Both
Compare SELinux and fapolicyd on RHEL 8/9. Learn the core differences between Mandatory Access Control (SELinux) and Application Whitelisting (fapolicyd), why both are essential for a robust defense-in-depth strategy, and how to manage their policies for ultimate system hardening. Table of Contents 🔈Introduction In today’s complex threat landscape, securing a Red Hat Enterprise Linux (RHEL) […]
Migrate Zabbix 6.4 to Zabbix 7.0 LTS
Comprehensive step-by-step guide to migrate Zabbix 6.4 to Zabbix 7.0 LTS for MySQL and PostgreSQL. Includes pre-checks, database commands, schema upgrades, and rollback instructions. Table of Contents 🔈Introduction Upgrading your Zabbix monitoring platform from version 6.4 to version 7.0 LTS is a strategic move that ensures long-term support, improved scalability, and enhanced performance. Active support […]
Install Grafana on RHEL 9 | CentOS 9
Learn how to install Grafana on RHEL 9 or CentOS 9—from repository setup through installation, service management, firewall & SELinux configuration, to securing your Grafana environment. Table of Contents 🔈Introduction If you’re working with Grafana and running a modern enterprise Linux environment like Red Hat Enterprise Linux 9 (RHEL 9) or CentOS Stream 9 (or a compatible EL9 distribution), […]
Install GIMP on RHEL 9 | CentOS 9
Learn how to install GIMP on RHEL 9, CentOS Stream 9, Rocky Linux 9, and AlmaLinux 9 using EPEL, Flatpak, or source builds. Includes step-by-step commands, troubleshooting tips, and comparisons for the best installation method. Table of Contents 🔈Introduction GIMP (GNU Image Manipulation Program) is one of the most widely used open-source graphics applications for […]
How to Diagnose and Fix Slow DNS Resolution on Linux
Improve Linux network performance by diagnosing and fixing slow DNS resolution. Learn step-by-step troubleshooting, CLI commands, and configuration fixes to speed up DNS lookups on any Linux distribution. Table of Contents 🔈Introduction Slow DNS resolution can make even the fastest Linux system feel sluggish. When domain lookups stall, websites load slowly, package managers hang on […]
How to Enable and Configure SELinux Policy Modules for Custom Applications
Learn how to enable, write, and configure SELinux policy modules for custom applications. Includes step-by-step instructions, file context management, CLI examples, and best practices for secure deployments. Table of Contents 🔈Introduction Security-Enhanced Linux (SELinux) is one of the most robust mandatory access control (MAC) frameworks available in modern Linux distributions. It enforces strict boundaries between […]
How to Set Up a RHEL 9 Workstation for Creative Professionals
Learn how to set up a RHEL 9 workstation for creative professionals, with step-by-step instructions for installing essential software, optimizing performance, and creating a smooth, efficient workflow. Table of Contents 🔈Introduction Red Hat Enterprise Linux (RHEL) is known for its stability and security, making it an excellent choice for developers and system administrators. However, RHEL […]
How to Run GUI Applications Remotely over SSH with X11 Forwarding / Waypipe
Learn how to run Linux GUI applications remotely over SSH using X11 forwarding or Waypipe. Includes setup steps, CLI examples, performance tips, security advice, and comparison charts for choosing the right method. Table of Contents 🔈Introduction Running graphical Linux applications on a remote server and displaying them on your local machine can be transformative for […]
How to Secure Grafana Behind Nginx with SSL on RHEL 9 | CentOS 9
Learn how to secure Grafana behind Nginx with SSL on RHEL 9 / CentOS 9. This step-by-step blog post includes domain setup, reverse-proxy configuration, WebSocket support, firewall rules and troubleshooting tips. Table of Contents 🔈Introduction Securing your Grafana instance behind Nginx with SSL is a best-practice setup that ensures encrypted web traffic, clean domain-based access, […]
Configuring Bonded Interfaces and VLANs Together on RHEL 9
Learn how to configure a bonded interface with VLAN tagging on RHEL 9: a step‑by‑step guide using nmcli and nmstatectl, architectural best practices, troubleshooting tips, and examples. Table of Contents 🔈Introduction In modern data centers, combining interface bonding (link aggregation or redundancy) with 802.1Q VLAN tagging is a common requirement. In RHEL 9, you can create a bond […]