Logging Monitoring

Debian 10 — aspell — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — aspell — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 August 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17544 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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Ubuntu 18.04 — gdm3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — gdm3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 August 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4614-1 Related CVEs: CVE-2020-16125 CVE-2019-3825 CVE-2018-14424 Upstream summary: Kevin Backhouse discovered that GDM incorrectly launched the initial setup tool when the accountsservice daemon was not reachable. A local attacker able […]

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Common Problems 117392

Ubuntu 20.04 LTS APT Lock File Prevents Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 17 August 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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Common Problems 115047

journalctl Shows No Persistent Logs After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 17 August 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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Gentoo Linux — dev-java/oracle-jre-bin — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-java/oracle-jre-bin — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202209-15 Related CVEs: CVE-2020-2585 CVE-2020-2755 CVE-2020-2756 CVE-2020-2757 CVE-2020-2773 CVE-2020-2781 CVE-2020-2800 CVE-2020-2803  +12 more Upstream summary: Multiple vulnerabilities have been discovered in Oracle's JDK and JRE software suites. Please review the CVE identifiers […]

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

How to Configure IBM PowerVM Hypervisor 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 ibm powervm hypervisor on ibm aix 7.2 on […]

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How to Configure DNS Aging and Scavenging on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure DNS Aging and Scavenging on Windows Server 2012 R2

How to Configure DNS Aging and Scavenging on Windows Server 2012 R2 DNS aging and scavenging is the mechanism by which Windows Server DNS automatically removes stale resource records that are no longer valid. In Active Directory-integrated DNS environments using dynamic DNS updates, clients and servers register their records automatically when they obtain IP addresses. […]

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How to Configure AppArmor Profiles on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure AppArmor Profiles on Debian 10

Introduction How to Configure AppArmor Profiles on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 10. This […]

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How to Set Up Active Directory Tiered Administration Model on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Active Directory Tiered Administration Model on Windows Server 2019

Introduction to Active Directory Tiered Administration The Active Directory Tiered Administration Model is a security architecture published by Microsoft that segregates administrative accounts into three tiers to contain the spread of compromised credentials. The fundamental insight is that a compromised workstation admin account should never be able to escalate to domain controller access, and the […]

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How to Set Up Data Deduplication on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Data Deduplication on Windows Server 2019

Introduction to Data Deduplication on Windows Server 2019 Data Deduplication (Dedup) is a Windows Server 2019 feature that reduces storage consumption by identifying and eliminating duplicate data blocks across files on a volume. Instead of storing multiple copies of identical data, Dedup replaces duplicates with references to a single shared copy stored in a special […]

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