Security Hardening

How to Encrypt Disk Partitions with LUKS on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Encrypt Disk Partitions with LUKS on RHEL 7

How to Encrypt Disk Partitions with LUKS on RHEL 7 Linux Unified Key Setup (LUKS) is the standard for disk encryption on Linux, providing a robust, well-documented format for encrypted block devices. By encrypting partitions with LUKS, you ensure that data remains unreadable if physical drives are removed or a server is decommissioned without proper […]

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FreeBSD 12 — w3m-m17n-img — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — w3m-m17n-img — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: w3m — format string vulnerability Related CVEs: CVE-2006-6772 Upstream summary: An anonymous person reports: w3m-0.5.1 crashes when using the -dump or -backend options to open a HTTPS URL with a […]

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Arch Linux — evince — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — evince — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201707-14 Related CVEs: CVE-2017-1000083 Upstream summary: Type: arbitrary command execution. Status: Fixed. Affected: 3.24.0+8+ga8363215-1. Fixed in: 3.24.0+12+g717df38f-1. Group: AVG-348. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 118548

MySQL service fails to start after package upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 24 July 2019 📖 ~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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openSUSE Tumbleweed — libsaml12 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libsaml12 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2017:3241-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-16853 Upstream summary: The DynamicMetadataProvider class in saml/saml2/metadata/impl/DynamicMetadataProvider.cpp in OpenSAML-C in OpenSAML before 2.6.1 fails to properly configure itself with the MetadataFilter plugins and does […]

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How to Set Up a LEMP Stack on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up a LEMP Stack on SLES 15

Introduction This tutorial covers How to Set Up a LEMP Stack on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: […]

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Common Problems 112591

Windows Server 2019 – gMSA authentication fails inside Windows containers – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 July 2019 Affected versions: Windows Server 2019 📖 ~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 112551

Windows Server 2019 Large File Copy Stalls at 99 Percent Over SMB 3 Encryption – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 July 2019 Affected versions: Windows Server 2019 📖 ~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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openSUSE Tumbleweed — gv — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — gv — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:10031-1 (see also SUSE bugzilla) Related CVEs: CVE-2012-3386 Upstream summary: The "make distcheck" rule in GNU Automake before 1.11.6 and 1.12.x before 1.12.2 grants world-writable permissions to the extraction directory, which introduces […]

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Common Problems 112543

Windows Server 2019 — NLB cluster convergence loops after adding new node with mismatched host priority — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 July 2019 Affected versions: Windows Server 2019 📖 ~2 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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