Run Pi-hole and Unbound on a Raspberry Pi 4 to block ads and tracking domains across every device on your home network, while resolving DNS privately using a local recursive resolver — no third-party DNS provider required.

An internal LDAP certificate renewal failed due to incorrect SELinux contexts on transferred certificate files. Despite correct permissions and ownership, OpenLDAP couldn't initialise TLS. Using restorecon to fix the security context resolved the issue immediately, highlighting the importance of SELinux context verification in certificate deployments.

This article demonstrates how to implement Full (Strict) SSL/TLS encryption by combining Cloudflare's managed frontend certificates with Let's Encrypt wildcard certificates on your origin server.

Our journey migrating our production care management platform from ANS to Cloudflare Load Balancer—eliminating manual certificate management, resolving security concerns, and achieving a seamless cutover.

This case study demonstrates how we implemented HTTP/2 on production Apache servers with zero downtime using a blue-green deployment strategy.

This guide demonstrates how to set up secure TLS 1.3 communication using Ed25519 elliptic curve certificates and a private Certificate Authority (CA). It covers encrypted client-server communication with modern, efficient cryptographic standards — ideal for internal systems, microservices, and zero-trust network architectures.

Learn how to set up MySQL user accounts with role-based access profiles, secure configurations, and consistent privilege management across environments.

A secure and standardised approach to accessing MySQL in non-production environments using SSH tunneling, with a focus on least privilege and improved access controls.

This article outlines the implementation and usage of custom Apache 503 error pages on production Tomcat web application instances

Network troubleshooting and configuration are crucial skills for Linux system administrators. This guide covers essential network commands for AlmaLinux/RHEL systems.