Introduction Setting up secure mariadb with mysql_secure_installation on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Secure MariaDB with mysql_secure_installation on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to […]
Peak-hour VoIP problems usually come from congestion, jitter, packet loss, QoS gaps, Wi-Fi issues, or provider routing changes. This guide shows how to diagnose the cause without guessing and fix office calls without disrupting the network.
🟡 Medium ⏱ 5–30 min Last verified: 5 May 2026 Affected versions: FreeBSD 14 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying configure firewalld rich rules both straightforward and auditable. This tutorial covers the complete procedure for how to Configure firewalld Rich Rules on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites The […]
🟡 Medium ⏱ 5–30 min Last verified: 4 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Introduction This tutorial demonstrates how to Harden GRUB Bootloader on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the default AppStream repositories enabled. […]
🟠 High ⏱ 5–30 min Last verified: 3 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Introduction How to Configure OpenVPN Server on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, […]
Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying deploy a .net application on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Deploy a .NET Application on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]
Introduction Deploying configure ifconfig networking on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + ports approach […]
