DNS

FreeBSD 13 — adns — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — adns — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 August 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: adns — multiple vulnerabilities Related CVEs: CVE-2017-9103 CVE-2017-9104 CVE-2017-9105 CVE-2017-9106 CVE-2017-9107 CVE-2017-9108 CVE-2017-9109 Upstream summary: Ian Jackson and the adns project reports: Vulnerable applications: all adns callers. Exploitable by: the […]

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Common Problems 124993

Oracle Linux 8 – Common Problem 003 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 31 July 2022 Affected versions: Oracle Linux 8 📖 ~3 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 120588

Debian 11 – UFW policy blocks package downloads and outbound HTTPS

🟡 Medium   ⏱ 5–30 min  Last verified: 31 July 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 117061

Ubuntu 22.04 LTS – Swap not activating at boot due to bad fstab entry – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 31 July 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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How to Configure Caddy as a Web Server on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Caddy as a Web Server on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up configure caddy as a web server 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 […]

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How to Set Up the Elastic Stack ELK on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up the Elastic Stack ELK on Debian 11

Introduction Deploying set up the elastic stack elk on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites […]

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Common Problems 117070

Ubuntu 22.04 LTS MySQL Fails to Start Because AppArmor Denies Data Path

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 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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Common Problems 113484

Windows Server 2016 – Container host cannot pull images behind TLS-inspecting proxy – Fix & Prevention (FIX-PREVENTION-2)

🟠 High   ⏱ 5–30 min  Last verified: 29 July 2022 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 journald Log Persistence on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure journald Log Persistence on Debian 11

Introduction Deploying configure journald log persistence on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]

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Common Problems 120494

Debian 11 Unmet Dependencies During full-upgrade

🟠 High   ⏱ 5–30 min  Last verified: 28 July 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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