Security Hardening

Common Problems 111128

Windows Server 2025 — Account lockout policy too aggressive causing false lockouts — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 30 July 2025 Affected versions: Windows Server 2025 📖 ~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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Red Hat Enterprise Linux 9 — butane — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — butane — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:3053 Related CVEs: CVE-2025-61729 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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How to Configure Nginx WebSocket Proxying on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure Nginx WebSocket Proxying on Oracle Linux 10

Introduction Setting up configure nginx websocket proxying on oracle linux 10 on a Oracle Linux 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Nginx WebSocket Proxying on Oracle Linux 10, with all the commands you need, the SELinux and firewalld considerations to […]

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Common Problems 124065

OpenSSH Login Delays from Reverse DNS Timeouts

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 2025 Affected versions: Oracle Linux 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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NetBSD 10.0 — zziplib — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — zziplib — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2007-1614 CVE-2018-7727 CVE-2018-16548 CVE-2018-17828 CVE-2017-5974 CVE-2017-5975 CVE-2017-5976 CVE-2017-5977  +12 more Upstream summary: pkgsrc audit-packages flagged zziplib<0.10.82nb3 for vulnerability class 'buffer-overflow'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1614 Table of contents Symptom & Impact Environment […]

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Common Problems 124127

Oracle Linux 10 – systemd Service Restart Loop Triggers Availability Drops – Root Cause Workflow

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2025 Affected versions: Oracle Linux 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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NetBSD 10.0 — rabbitmq-c — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — rabbitmq-c — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2019-18609 Upstream summary: pkgsrc audit-packages flagged rabbitmq-c<0.10.0 for vulnerability class 'integer-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2019-18609 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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How to Install Nagios on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Install Nagios on CentOS Stream 10

Introduction Setting up install nagios on centos stream 10 on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install Nagios on CentOS Stream 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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Common Problems 124059

Oracle Linux 10 – LVM thin pool reaches 100 percent and writes fail – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2025 Affected versions: Oracle Linux 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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How to Configure Nginx Load Balancing on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure Nginx Load Balancing on Oracle Linux 10

Introduction Setting up configure nginx load balancing on oracle linux 10 on a Oracle Linux 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Nginx Load Balancing on Oracle Linux 10, with all the commands you need, the SELinux and firewalld considerations to […]

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