Firewall

How to Use Lynis Security Auditing on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use Lynis Security Auditing 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 lynis security auditing on ibm aix 7.2 on […]

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Common Problems 114453

RHEL 9 Chrony time drift and NTP sync issues

🟡 Medium   ⏱ 5–30 min  Last verified: 20 November 2022 📖 ~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 IBM Guardium Database Security on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use IBM Guardium Database Security on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use ibm guardium database security on IBM AIX 7.3 […]

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Common Problems 116949

Ubuntu 22.04 LTS – SSH service is active but remote login is refused

🟠 High   ⏱ 5–30 min  Last verified: 19 November 2022 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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How to Configure Server Core on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Server Core on Windows Server 2016

How to Configure Windows Server 2016 Server Core Server Core is an installation option for Windows Server 2016 that removes the graphical shell — the desktop, Start menu, taskbar, and most graphical management tools — leaving only a command prompt and PowerShell. The result is a significantly reduced attack surface, lower memory consumption, fewer required […]

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How to Set Up Hyper-V Nested Virtualisation on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up Hyper-V Nested Virtualisation on Windows Server 2022

Introduction to Hyper-V Virtual Networking Virtual networking is one of the most complex and important aspects of a Hyper-V deployment on Windows Server 2022. The Hyper-V Virtual Switch is a Layer 2 software switch that runs in the hypervisor and provides connectivity between virtual machines and between VMs and the physical network. Beyond basic connectivity, […]

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Common Problems 117978

Ubuntu 18.04 LTS – NTP drift causes authentication and cluster timing faults – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 November 2022 Affected versions: Ubuntu 18.04 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 […]

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How to Use AIX System Backup with mksysb on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use AIX System Backup with mksysb on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use aix system backup with mksysb on IBM AIX […]

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How to Use suma to Automate Fix Downloads on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use suma to Automate Fix Downloads on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use suma to automate fix downloads on IBM AIX […]

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Common Problems 111640

Windows Server 2022 — Active Directory Replication Fails with 1722 RPC Errors — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 17 November 2022 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Quick Checks Deep Diagnosis Primary Fix Verification Prevention & Hardening Symptom & Impact Domain controllers fail to replicate and show RPC error 1722 in Directory Service and DFS Replication […]

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