Security Hardening

How to Configure Simultaneous Multithreading (SMT) on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Simultaneous Multithreading (SMT) 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 configure simultaneous multithreading (smt) on ibm aix 7.2 on […]

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openSUSE Tumbleweed — btrfsmaintenance — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — btrfsmaintenance — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2018-14722 Upstream summary: An issue was discovered in evaluate_auto_mountpoint in btrfsmaintenance-functions in btrfsmaintenance through 0.4.1. Code execution as root can occur via a specially crafted […]

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How to Set Up IIS Logging and Log Analysis on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up IIS Logging and Log Analysis on Windows Server 2012 R2

How to Set Up IIS Logging and Log Analysis on Windows Server 2012 R2 Internet Information Services (IIS) on Windows Server 2012 R2 maintains detailed access logs recording every HTTP request processed by the web server. These logs are essential for security auditing, performance analysis, troubleshooting application errors, and understanding traffic patterns. IIS supports multiple […]

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FreeBSD 12 — php70-wddx — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php70-wddx — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2015-8874 CVE-2016-5766 CVE-2016-5767 CVE-2016-5768 CVE-2016-5769 CVE-2016-5770 CVE-2016-5771 CVE-2016-5772  +1 more Upstream summary: The PHP Group reports: Please reference CVE/URL list for details Table of […]

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FreeBSD 12 — php70-curl — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php70-curl — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2015-8879 CVE-2016-5385 CVE-2016-5399 CVE-2016-6288 CVE-2016-6289 CVE-2016-6290 CVE-2016-6291 CVE-2016-6292  +4 more Upstream summary: PHP reports: Fixed bug #69975 (PHP segfaults when accessing nvarchar(max) defined columns) […]

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

Arch Linux — jansson — 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-201609-15 Related CVEs: CVE-2016-4425 Upstream summary: Type: denial of service. Status: Fixed. Affected: 2.7-1. Fixed in: 2.8-1. Group: AVG-19. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Perform a System State Backup on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Perform a System State Backup on Windows Server 2016

How to Set Up System State Backup and Bare Metal Recovery on Windows Server 2016 Protecting a Windows Server 2016 installation requires more than simply backing up user data. The operating system itself, including the registry, the Active Directory database, boot files, and the COM+ class registration database, must be captured in what is known […]

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Ubuntu 18.04 — italc — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — italc — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 August 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4547-1 Related CVEs: CVE-2018-15127 CVE-2018-20019 CVE-2018-20020 CVE-2018-20021 CVE-2018-20022 CVE-2018-20023 CVE-2018-20024 CVE-2018-20748  +4 more Upstream summary: It was discovered that an information disclosure vulnerability existed in the LibVNCServer vendored in iTALC […]

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Common Problems 118471

Ubuntu 16.04 LTS – apt update fails with 404 Not Found for package index – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 August 2019 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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How to Configure pf Firewall Rules on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure pf Firewall Rules on FreeBSD 12

Introduction How to Configure pf Firewall Rules on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

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