Logging Monitoring

FreeBSD 12 — typo3-10-php — multiple vulnerabilities (9 CVEs) — patch and remediation guide

• September 5, 2020
• BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 5 September 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: typo3 — XSS vulnerability in svg-sanitize Related CVEs: CVE-2020-11063 CVE-2020-11064 CVE-2020-11065 CVE-2020-11066 CVE-2020-11067 CVE-2020-11069 CVE-2020-15098 CVE-2020-15099  +1 more Upstream summary: The TYPO3 project reports: The SVG sanitizer library enshrined/svg-sanitize before […]

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RHEL 8 NFS Mount Returns Stale File Handle Errors

• September 5, 2020
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 5 September 2020 Affected versions: 8.5 8.6 8.7 8.8 8.9 8.10 📖 ~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 & […]

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How to Set Up IPv6 on Debian 9

• September 5, 2020
• Linux
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Introduction This guide explains how to Set Up IPv6 on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install with the standard […]

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How to Use proctools on IBM AIX 7.2

• September 5, 2020
• IBM AIX
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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 use proctools on ibm aix 7.2 on IBM AIX […]

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How to Install Checkmk on Debian 10

• September 5, 2020
• Linux
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Introduction This guide explains how to Install Checkmk on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the standard repositories […]

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Oracle Linux 8 — .NET Core — vulnerability — patch and remediation guide

• September 5, 2020
• Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2143 Related CVEs: CVE-2020-1108 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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Debian 9 Disk Full in /var Causes Service Outages

• September 4, 2020
• Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 4 September 2020 Affected versions: Debian 9 📖 ~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 10 sudo Command Not Found or Permission Denied

• September 4, 2020
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 4 September 2020 Affected versions: Debian 10 📖 ~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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Ubuntu 16.04 LTS – SSH login hangs after authentication – Fix & Prevention

• September 4, 2020
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 4 September 2020 Affected versions: Ubuntu 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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Tuned profile not applying after reboot

• September 4, 2020
• Tutorials
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🟡 Medium   ⏱ 5–30 min  Last verified: 4 September 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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