Systemd Services

How to Configure RACF Integration on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure RACF Integration 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 racf integration on ibm aix 7.1 on IBM […]

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How to Enable CIS Benchmarks on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Enable CIS Benchmarks 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 enable cis benchmarks on ibm aix 7.2 on IBM […]

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FreeBSD 12 — py36-yaml — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py36-yaml — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 July 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PyYAML — arbitrary code execution Related CVEs: CVE-2017-18342 CVE-2020-14343 CVE-2020-1747 Upstream summary: A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary […]

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How to Configure iptables Packet Filtering on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure iptables Packet Filtering on Debian 10

Introduction Deploying configure iptables packet filtering on debian 10 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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FreeBSD 12 — rubygem-activestorage — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-activestorage — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 July 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Rails — multiple vulnerabilities Related CVEs: CVE-2020-8162 CVE-2020-8164 CVE-2020-8165 CVE-2020-8166 CVE-2020-8167 Upstream summary: Ruby on Rails blog: Hi everyone! Rails 5.2.4.3 and 6.0.3.1 have been released! These releases contain important […]

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Oracle Linux 8 — python27:2.7 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python27:2.7 — vulnerability — patch and remediation guide (ELSA-2020-4654)

🟡 Medium   ⏱ 10–30 min  Last verified: 24 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4654 Related CVEs: CVE-2019-20916 CVE-2019-20907 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 118510

Ubuntu 16.04 shutdown hangs for several minutes

🟡 Medium   ⏱ 5–30 min  Last verified: 23 July 2020 📖 ~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 — nethack — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — nethack — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:14898-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-5253 Upstream summary: NetHack before version 3.6.0 allowed malicious use of escaping of characters in the configuration file (usually .nethackrc) which could be exploited. This […]

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Debian 10 — gst-libav1.0 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — gst-libav1.0 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 July 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker 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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How to Configure ZFS on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure ZFS on Debian 10

Introduction How to Configure ZFS on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. This tutorial […]

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