Firewall

Common Problems 113964

RHEL 10 – firewalld Rules Not Persisting Across Reload – Policy Repair

🟡 Medium   ⏱ 5–30 min  Last verified: 22 October 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

Read more
How to Set Up a Kubernetes Dashboard on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up a Kubernetes Dashboard on RHEL 9

The Kubernetes Dashboard is a general-purpose, web-based UI for Kubernetes clusters that allows users to manage applications, inspect cluster resources, view logs, and troubleshoot issues without using the kubectl CLI. It provides a visual overview of all workloads in the cluster — deployments, pods, services, ingress rules, storage, and RBAC configuration — making it accessible […]

Read more
How to Install and Configure Apache HTTPD on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install and Configure Apache HTTPD on RHEL 10

Introduction Setting up install and configure apache httpd on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install and Configure Apache HTTPD on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

Read more
Common Problems 127132

CentOS Stream 10 – Common Problem 142 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 21 October 2025 Affected versions: CentOS Stream 10 📖 ~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 […]

Read more
How to Configure SSL/TLS with OpenSSL on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure SSL/TLS with OpenSSL on Oracle Linux 10

Introduction How to Configure SSL/TLS with OpenSSL on Oracle Linux 10 on Oracle Linux 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

Read more
How to Configure Nginx FastCGI Caching on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure Nginx FastCGI Caching on Oracle Linux 10

Introduction How to Configure Nginx FastCGI Caching on Oracle Linux 10 on Oracle Linux 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

Read more
How to Install Cockpit Web Console on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Cockpit Web Console on Debian 13

Introduction This guide explains how to Install Cockpit Web Console on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with the […]

Read more
How to Configure Automatic Kernel Hardening with Hardening.io on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Automatic Kernel Hardening with Hardening.io on Debian 13

Introduction This guide explains how to Configure Automatic Kernel Hardening with Hardening.io on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install […]

Read more
How to Set Up an SFTP-Only User on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up an SFTP-Only User on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying set up an sftp-only user both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up an SFTP-Only User on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

Read more
How to Create and Manage Users on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Create and Manage Users on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up create and manage users on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration […]

Read more
CHAT