Backup Recovery

Common Problems 111769

Windows Server 2022 — TLS Handshake Failures Break LDAPS and Web Services After Cipher Changes — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 October 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 Clients fail secure connections with handshake errors after TLS policy hardening removes required protocol/cipher overlap. LDAPS […]

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How to Configure AppArmor for Nginx on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure AppArmor for Nginx on Debian 11

Introduction This guide explains how to Configure AppArmor for Nginx on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the […]

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Common Problems 118599

Ubuntu 16.04 LTS Chrony Not Syncing Due to Firewall Policy

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 2022 Affected versions: 16.04 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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Common Problems 117047

Ubuntu 22.04 GNOME Login Loop After Graphics Stack Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 21 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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Common Problems 111749

Windows Server 2022 — Group Policy Objects Not Applying to OU After Security Filtering Changes — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 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 Expected policies no longer apply to servers in a target OU after delegation or filtering updates. […]

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How to Configure Gitea Self-Hosted Git Service on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Gitea Self-Hosted Git Service on Debian 11

Introduction Deploying configure gitea self-hosted git service 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 You […]

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Common Problems 117045

Ubuntu 22.04 LTS – Apache fails to start from missing module dependency – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 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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Common Problems 114597

fapolicyd Blocks Approved Application Binaries

🟡 Medium   ⏱ 5–30 min  Last verified: 20 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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Common Problems 111845

Windows Server 2022 AD Kerberos SPN Lookup Fails with KDC Errors – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 October 2022 Affected versions: Windows Server 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 […]

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Debian 11 — ldap-git-backup — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ldap-git-backup — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1425 Upstream summary: ldap-git-backup before 1.0.4 exposes password hashes due to incorrect directory permissions. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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