January 2021 - Page 54 of 69

Common Problems 115055

RHEL 8 auditd Backlog Limit Exceeded Messages

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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 113479

Windows Server 2012 R2 – SmartScreen blocking unsigned internal installers – Fix & Prevention

🟢 Low   ⏱ 5–30 min  Last verified: 01 April 2027 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Gentoo Linux — dev-libs/icu — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-libs/icu — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202003-15 Related CVEs: CVE-2020-10531 Upstream summary: It was discovered that ICU’s UnicodeString::doAppend() function is vulnerable to an integer overflow. Please review the CVE identifiers referenced below for more details. Table of contents […]

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How to Set Up SSL VPN with OpenVPN on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Set Up SSL VPN with OpenVPN 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 set up ssl vpn with openvpn on ibm aix […]

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How to Configure a Firewall with nftables on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure a Firewall with nftables on SLES 12

Introduction This tutorial covers How to Configure a Firewall with nftables on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: […]

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Amazon Linux 2 — kernel-livepatch-4.14.177-139.254 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.177-139.254 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2020-024 Related CVEs: CVE-2020-1749 CVE-2019-19319 Upstream summary: A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. […]

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How to Configure Shared Ethernet Adapter on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Shared Ethernet Adapter 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 shared ethernet adapter on ibm aix 7.2 on […]

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Arch Linux — firefox — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — firefox — multiple vulnerabilities (20 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-202101-5 Related CVEs: CVE-2020-16044 CVE-2020-26969 CVE-2020-26968 CVE-2020-26967 CVE-2020-26965 CVE-2020-26963 CVE-2020-26962 CVE-2020-26961  +12 more Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 84.0.1-1. Fixed in: 84.0.2-1. Group: AVG-1413. Table of […]

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What is a Boolean? — step-by-step DevOps tutorial on Progressive Robot

What is a Boolean?

A Boolean is a data type which has one of only two possible values: true or false. Booleans represent the truth values that are associated with the logic branch of mathematics, which informs algorithms in computer science. In programming, Booleans are used to make comparisons and to control the flow of a program.

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