chris

How to Perform a CIS Benchmark Audit on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Perform a CIS Benchmark Audit on Debian 10

Introduction Deploying perform a cis benchmark audit 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 Before […]

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Common Problems 121175

Debian 10 TLS Handshake Failures to Repository or API Endpoints

🟠 High   ⏱ 5–30 min  Last verified: 2 August 2020 Affected versions: Debian 10 📖 ~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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Common Problems 118545

DKMS Build Fails After Kernel Update

🟡 Medium   ⏱ 5–30 min  Last verified: 2 August 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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Common Problems 115447

SELinux Denies httpd Access to Content

🟡 Medium   ⏱ 5–30 min  Last verified: 2 August 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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How to Install Nginx Ingress Controller on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Nginx Ingress Controller on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install nginx ingress controller on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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Common Problems 112484

Windows Server 2019 — Group nesting depth limit hit causing membership not to resolve — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 August 2020 Affected versions: Windows Server 2019 📖 ~2 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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Common Problems 112413

Windows Server 2019 — Split-brain DNS returns incorrect internal host records for hybrid workloads — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 2 August 2020 Affected versions: Windows Server 2019 📖 ~2 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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Alpine Linux edge — targetcli — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — targetcli — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.1.53-r0 📖 ~4 min read  •  Source: Alpine secdb entry — targetcli 2.1.53-r0 Related CVEs: CVE-2020-13867 CVE-2020-10699 Upstream summary: Alpine community repository for vedge ships targetcli 2.1.53-r0 which addresses CVE-2020-13867. Table of contents Symptom & Impact […]

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How to Use nmon for Performance Monitoring on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use nmon for Performance Monitoring 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 use nmon for performance monitoring on ibm aix 7.1 […]

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

FreeBSD 12 — dovecot-pigeonhole — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 August 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: dovecot-pigeonhole — Sieve excessive resource usage Related CVEs: CVE-2019-11500 CVE-2020-28200 Upstream summary: Dovecot team reports reports: Sieve interpreter is not protected against abusive scripts that claim excessive resource usage. Fixed […]

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