Security Hardening

How to Use numa_node_info for NUMA Topology on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use numa_node_info for NUMA Topology on IBM AIX 7.2

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 numa_node_info for numa topology on ibm aix 7.2 […]

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How to Configure NTLM Authentication on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure NTLM Authentication on Windows Server 2012 R2

How to Configure NTLM Authentication on Windows Server 2012 R2 NT LAN Manager (NTLM) is a challenge-response authentication protocol that predates Kerberos in Windows environments. While Kerberos is the preferred protocol for domain authentication, NTLM remains in use for several scenarios: authentication to servers by IP address rather than FQDN, workgroup authentication, legacy applications, and […]

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Ubuntu 18.04 — keepalived — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — keepalived — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 January 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5188-1 Related CVEs: CVE-2021-44225 CVE-2018-19115 Upstream summary: It was discovered that Keepalived incorrectly handled certain messages. An attacker could possibly use this issue to access-control bypass. Table of contents Symptom […]

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SLES 12 — librbd1 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — librbd1 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 January 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:1158-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-12059 CVE-2018-10861 CVE-2018-1128 CVE-2018-1129 CVE-2018-7262 CVE-2016-5009 CVE-2020-10753 CVE-2020-1760  +4 more Upstream summary: An issue was discovered in Ceph through 13.2.9. A POST request with an […]

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

Arch Linux — libtpms — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202107-9 Related CVEs: CVE-2021-3623 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 0.8.3-1. Fixed in: 0.8.4-1. Group: AVG-2108. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Oracle Linux 8 — rhnreg_ks Register Command Might Fail If python3-rhn-virtualization-host Package Is Installed — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — rhnreg_ks Register Command Might Fail If python3-rhn-virtualization-host Package Is Installed

🟠 High   ⏱ 5–30 min  Last verified: 21 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 30366521 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 […]

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Common Problems 113007

Windows Server 2016 — WSUS SUSDB index bloat causes timeouts on console and client scans — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 January 2021 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 IBM MQ Clustering on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure IBM MQ Clustering on IBM AIX 7.1

Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure ibm mq clustering on ibm aix 7.1 on […]

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