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How to Harden SSH on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Harden SSH on RHEL 8

SSH is the primary remote administration interface for most RHEL 8 servers, making it a prime target for brute-force attacks and unauthorized access attempts. A default OpenSSH installation leaves several insecure options enabled that should be disabled immediately after provisioning. This guide walks through a comprehensive SSH hardening process covering configuration directives, host access controls, […]

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Arch Linux — lib32-libvorbis — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lib32-libvorbis — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201803-21 Related CVEs: CVE-2018-5146 CVE-2017-14633 CVE-2017-14632 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 1.3.5-1. Fixed in: 1.3.6-1. Group: AVG-658. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 114959

RHEL 8 – firewalld Runtime Rules Lost After Reload

🟡 Medium   ⏱ 5–30 min  Last verified: 13 June 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 & Cross-Refs References & Further […]

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Common Problems 112426

Windows Server 2019 — MSMQ service stuck in starting state after journal corruption — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 June 2019 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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openSUSE Tumbleweed — xkbcomp — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — xkbcomp — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:3802-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-15859 CVE-2018-15863 CVE-2018-15853 CVE-2018-15861 Upstream summary: Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used […]

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How to Set Up Two-Factor Authentication on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication 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 set up two-factor authentication on ibm aix 7.1 on […]

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FreeBSD 12 — golddig — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — golddig — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: golddig — local buffer overflow vulnerabilities Related CVEs: CVE-2005-0121 Upstream summary: Two buffer overflow vulnerabilities where detected. Both issues can be used by local users to gain group games privileges […]

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