Firewall

How to Set Up Alertmanager Email Notifications on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Alertmanager Email Notifications on Debian 10

Introduction This guide explains how to Set Up Alertmanager Email Notifications on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with […]

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How to Set Up LDAP with OpenLDAP on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up LDAP with OpenLDAP on RHEL 7

How to Set Up LDAP with OpenLDAP on RHEL 7 OpenLDAP is the most widely deployed open-source implementation of the Lightweight Directory Access Protocol and serves as the foundation for centralized authentication, authorization, and user directory services across Linux environments. On RHEL 7, OpenLDAP is available directly from the base repositories and integrates tightly with […]

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How to Configure Apache2 MPM Worker on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Apache2 MPM Worker on Debian 10

Introduction Deploying configure apache2 mpm worker on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]

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How To Install and Secure Redis on CentOS — step-by-step Linux tutorial on Progressive Robot

How To Install and Secure Redis on CentOS

This tutorial provides instructions for installing Redis on a CentOS 7 server and using its built-in security features, in coordination with some other security configurations, to keep it from being accessed by unauthorized users.

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How to Configure IBM DS8000 Storage on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure IBM DS8000 Storage on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure ibm ds8000 storage on ibm aix 7.1 on […]

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How to Install and Configure Squid Proxy on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Squid Proxy on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install and configure squid proxy on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully […]

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Common Problems 121181

Debian 10 – Fail2ban Not Banning with nftables Backend – Jail Action Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 3 August 2020 Affected versions: Debian 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 & […]

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How to Install Apache on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Install Apache on SLES 12

Introduction This tutorial covers How to Install Apache on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Install Apache zypper install -y apache2 Step 2 — Enable […]

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