Logging Monitoring

How to Use WMI on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Use WMI on Windows Server 2012 R2

How to Use WMI on Windows Server 2012 R2 Windows Management Instrumentation (WMI) is Microsoft’s implementation of the Web-Based Enterprise Management (WBEM) standard and the central repository of management information on Windows systems. WMI exposes virtually every aspect of a Windows Server 2012 R2 system — hardware inventory, operating system properties, installed software, running processes, […]

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How to Enable FIPS Compliance on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Enable FIPS Compliance on Windows Server 2012 R2

How to Enable FIPS Compliance on Windows Server 2012 R2 The Federal Information Processing Standard (FIPS) 140-2 specifies the security requirements for cryptographic modules used in federal government systems. Many organizations in regulated industries also adopt FIPS compliance to meet contractual requirements or demonstrate due diligence. On Windows Server 2012 R2, enabling FIPS mode restricts […]

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FreeBSD 12 — libwww — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libwww — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: expat — multiple vulnerabilities Related CVEs: CVE-2005-3183 CVE-2009-3560 CVE-2009-3720 CVE-2016-9063 CVE-2017-9233 Upstream summary: Mitre reports: An integer overflow during the parsing of XML using the Expat library. XML External Entity […]

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Oracle Linux 8 — oniguruma — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — oniguruma — vulnerability — patch and remediation guide (ELSA-2020-4827)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 November 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4827 Related CVEs: CVE-2019-13225 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Set Up Microsoft Defender on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Microsoft Defender on Windows Server 2019

Introduction to Microsoft Defender on Windows Server 2019 Microsoft Defender Antivirus is built into Windows Server 2019 and provides real-time protection against malware, ransomware, spyware, and other threats. On Windows Server 2019, Defender Antivirus integrates with Windows Defender System Guard, Windows Defender Credential Guard, and Microsoft Defender for Endpoint (the enterprise-grade EDR product). For basic […]

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Common Problems 117899

Ubuntu 18.04 LTS apt Lock Contention During Unattended Upgrades

🟡 Medium   ⏱ 5–30 min  Last verified: 27 November 2019 Affected versions: 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 Configure sudo for Non-Root Users on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure sudo for Non-Root Users on Debian 9

Introduction How to Configure sudo for Non-Root Users 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 115114

firewalld Rich Rule Order Causing Unexpected Access

🟡 Medium   ⏱ 5–30 min  Last verified: 27 November 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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Common Problems 112941

Windows Server 2016 — WinSxS Growth Exhausts C: and Breaks Patch Installation — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 27 November 2019 Affected versions: Windows Server 2016 📖 ~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 Configure Large Page Support on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Large Page Support 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 large page support on ibm aix 7.2 on […]

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