Firewall

How to Set Up Network Access Protection (NAP) on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up Network Access Protection (NAP) on Windows Server 2012 R2

How to Set Up Network Access Protection (NAP) on Windows Server 2012 R2 Network Access Protection (NAP) is a policy enforcement platform included in Windows Server 2012 R2 that evaluates the health state of client computers before granting them full network access. NAP can check whether clients have current OS patches, antivirus definitions, Windows Firewall […]

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Common Problems 118082

Ubuntu 18.04 LTS UFW rules block application despite allow entry

🟡 Medium   ⏱ 5–30 min  Last verified: 11 December 2019 📖 ~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 Use AIX CDE Desktop on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use AIX CDE Desktop 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 use aix cde desktop on ibm aix 7.1 on […]

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How to Configure collectd on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure collectd 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 configure collectd on ibm aix 7.2 on IBM AIX […]

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How to Configure NTP Time Synchronization on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure NTP Time Synchronization on Debian 9

Introduction This guide explains how to Configure NTP Time Synchronization on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install with the […]

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How to Configure iptables Packet Filtering on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure iptables Packet Filtering on Debian 9

Introduction This guide explains how to Configure iptables Packet Filtering on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install with the […]

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Initial Server Setup with RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

Initial Server Setup with RHEL 7

Initial Server Setup with RHEL 7 Setting up a fresh Red Hat Enterprise Linux 7 server correctly from the start is one of the most important steps you can take to ensure long-term security and stability. Whether you have just provisioned a bare-metal machine or a cloud instance, this guide walks you through every essential […]

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How to Install Ansible and Manage Windows Server 2012 R2 with Ansible — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Install Ansible and Manage Windows Server 2012 R2 with Ansible

How to Install Ansible and Manage Windows Server 2012 R2 with Ansible Ansible is an agentless configuration management and automation platform that manages Windows hosts via WinRM (Windows Remote Management) rather than SSH. This makes it an excellent choice for automating Windows Server 2012 R2 deployments, as no software needs to be installed on the […]

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How to Register a GitHub Actions Self-Hosted Runner on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Register a GitHub Actions Self-Hosted Runner on RHEL 8

GitHub Actions self-hosted runners allow you to execute CI/CD workflows on your own hardware, giving you full control over the operating system, installed tooling, network access, and resource allocation. On RHEL 8 this is especially valuable for pipelines that must access internal systems, use licensed software, or run workloads that exceed GitHub’s hosted-runner resource limits. […]

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How to Install k3s Lightweight Kubernetes on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install k3s Lightweight Kubernetes on RHEL 8

k3s is a lightweight, CNCF-certified Kubernetes distribution built for resource-constrained environments, edge deployments, and developer laptops, yet it is fully production-capable. It ships as a single binary under 100 MB, bundles its own SQLite datastore, and eliminates the need for a separate etcd cluster on small installations. RHEL 8 is an excellent host for k3s […]

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