Security Hardening

How to Configure AIX Trusted Computing Base (TCB) on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure AIX Trusted Computing Base (TCB) 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 aix trusted computing base (tcb) on ibm aix […]

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How to Encrypt Disk Partitions with LUKS on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Encrypt Disk Partitions with LUKS on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up encrypt disk partitions with luks on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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How to Automate Debian 10 Server Provisioning with Ansible — step-by-step Debian 10 tutorial on Progressive Robot

How to Automate Debian 10 Server Provisioning with Ansible

Introduction Deploying automate debian 10 server provisioning with ansible on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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Oracle Linux 8 — zziplib — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — zziplib — vulnerability — patch and remediation guide (ELSA-2024-3127)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 January 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-3127 Related CVEs: CVE-2020-18770 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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Common Problems 112627

Windows Server 2019 — Failover Cluster service stuck in starting state — Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 18 January 2020 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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How to Configure Collectd on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Collectd on Debian 9

Introduction Deploying configure collectd on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need a […]

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openSUSE Tumbleweed — python36-Werkzeug — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-Werkzeug — 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-2019:2118-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-14806 Upstream summary: Pallets Werkzeug before 0.15.3, when used with Docker, has insufficient debugger PIN randomness because Docker containers share the same machine id. Table […]

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FreeBSD 12 — sdl_image — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — sdl_image — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: sdl_image — buffer overflow vulnerabilities Related CVEs: CVE-2007-6697 CVE-2008-0544 Upstream summary: Secunia reports: Two vulnerabilities have been reported in SDL_image, which can be exploited by malicious people to cause a […]

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

openSUSE Tumbleweed — kdump — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2016:2553-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-5759 Upstream summary: The mkdumprd script called "dracut" in the current working directory "." allows local users to trick the administrator into executing code as […]

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FreeBSD 12 — unzoo — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — unzoo — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: unzoo — Directory Traversal Vulnerability Upstream summary: Secunia reports: Doubles has discovered a vulnerability in Unzoo, which potentially can be exploited by malicious people to compromise a user's system. The […]

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