Firewall

How to Automate Oracle Linux 8 Deployment with Kickstart — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Automate Oracle Linux 8 Deployment with Kickstart

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying automate oracle linux 8 deployment with kickstart both straightforward and auditable. This tutorial covers the complete procedure for how to Automate Oracle Linux 8 Deployment with Kickstart, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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Настройка брандмауэра с UFW в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Настройка брандмауэра с UFW в Ubuntu 20.04

UFW — это простой интерфейс управления брандмауэром, скрывающий сложность низкоуровневых технологий фильтрации пакетов, таких как iptables и nftables. Если вы ищете способ защитить вашу сеть и не знаете, какой инструмент для этого использовать, UFW может отлично вам…

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How To Install and Secure Memcached on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Install and Secure Memcached on CentOS 7

Memory object caching systems like Memcached can optimize backend database performance by temporarily storing information in memory, retaining frequently or recently requested records. In this guide, we will cover how to protect your Memcached server by binding your installation to a local or private network interface and creating an authorized user for your Memcached instance.

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How to Set Up Docker Swarm Cluster on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Docker Swarm Cluster on Debian 9

Introduction How to Set Up Docker Swarm Cluster on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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Common Problems 118407

Ubuntu 16.04 LTS intermittent DNS failures with resolvconf

🟡 Medium   ⏱ 5–30 min  Last verified: 24 September 2020 📖 ~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 & Cross-Refs References & Further […]

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How to Set Up Oracle Linux 8 for High-Performance Computing — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Oracle Linux 8 for High-Performance Computing

Introduction How to Set Up Oracle Linux 8 for High-Performance Computing on Oracle Linux 8 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 […]

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Common Problems 115480

Network Service Misconfiguration Breaks Static IP

🟡 Medium   ⏱ 5–30 min  Last verified: 23 September 2020 📖 ~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 & Cross-Refs References & Further […]

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How to Install Drupal on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Drupal on Oracle Linux 8

Introduction This tutorial demonstrates how to Install Drupal on Oracle Linux 8 on Oracle Linux 8. 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 Oracle Linux 8 system with the default AppStream […]

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How to Implement Mandatory Access Control on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Implement Mandatory Access Control on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying implement mandatory access control on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Implement Mandatory Access Control on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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How to Use nmon for Performance Monitoring on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use nmon for Performance Monitoring on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use nmon for performance monitoring on ibm aix 7.2 […]

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