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How to Set Up Nagios4 on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Nagios4 on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up set up nagios4 on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully and the […]

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Common Problems 120684

Debian 11: Nginx serves incomplete TLS certificate chain

🟠 High   ⏱ 5–30 min  Last verified: 12 October 2022 Affected versions: Debian 11 📖 ~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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Common Problems 117073

Ubuntu 22.04 LTS – MySQL fails to start because AppArmor blocks data path – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 12 October 2022 Affected versions: Ubuntu 22.04 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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Debian 11 — darktable — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — darktable — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1438 CVE-2013-1439 CVE-2013-2126 CVE-2015-3885 CVE-2015-8366 CVE-2015-8367 CVE-2018-25017 Upstream summary: Unspecified vulnerability in dcraw 0.8.x through 0.8.9, as used in libraw, ufraw, shotwell, and other products, allows context-dependent attackers […]

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Common Problems 115438

RHEL 7 journalctl Missing Historical Logs After Rotation

🟡 Medium   ⏱ 5–30 min  Last verified: 12 October 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 Configure Password Policies on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure Password Policies 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 configure password policies on IBM AIX 7.3 with practical […]

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Alpine Linux edge — jenkins — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — jenkins — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.361.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — jenkins 2.361.2-r0 Related CVEs: CVE-2022-2048 CVE-2022-22970 CVE-2022-22971 CVE-2022-34174 CVE-2022-34173 CVE-2022-34172 CVE-2022-34171 CVE-2022-34170  +12 more Upstream summary: Alpine community repository for vedge ships jenkins 2.361.2-r0 which […]

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Debian 11 — unzip — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — unzip — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0282 CVE-2005-0602 CVE-2005-2475 CVE-2005-4667 CVE-2008-0888 CVE-2014-8139 CVE-2014-8140 CVE-2014-8141  +11 more Upstream summary: Directory traversal vulnerability in UnZip 5.50 allows attackers to overwrite arbitrary files via invalid characters between […]

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Common Problems 115428

RHEL 7 SELinux Prevents Nginx Access to Custom Content Path

🟡 Medium   ⏱ 5–30 min  Last verified: 12 October 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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