March 2021 - Page 26 of 63

How to Set Up Active Directory Tiered Administration on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Set Up Active Directory Tiered Administration on Windows Server 2016

Introduction The Active Directory Tiered Administration Model on Windows Server 2016 divides admin privileges into Tier 0 (AD/DC infrastructure), Tier 1 (member servers), and Tier 2 (workstations). Keeping admin credentials separate at each tier prevents a compromised helpdesk account from pivoting to domain admin, drastically reducing breach impact. Creating the Tier OU Structure Build an […]

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One continuous beam of light crossing five archways with a measurement marker rising at each, ESG metrics captured at five stages of the IT asset lifecycle

Top Sustainability and ESG Metrics to Track Across the IT Asset Lifecycle

Most IT teams are asked for ESG metrics for the first time when an auditor, a customer questionnaire, or a regulator wants a number nobody has ever calculated. This guide sets out what to track across the full IT asset lifecycle — procurement, deployment, operation, utilisation, and disposition — what each metric actually measures, where the data comes from, and which disclosure it feeds. It covers the environmental, social, and governance columns rather than treating ESG as a synonym for carbon, explains why embodied carbon and asset lifespan carry far more leverage than endpoint energy, and is blunt about the widely reported figures that will not survive assurance, including the avoided-emissions credit on your disposition certificate.

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How to Configure Apache with mod_pagespeed on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Apache with mod_pagespeed on Oracle Linux 8

Introduction Setting up configure apache with mod_pagespeed on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Apache with mod_pagespeed on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to […]

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Arch Linux — mdbook — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — mdbook — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202101-8 Related CVEs: CVE-2020-26297 Upstream summary: Type: cross-site scripting. Status: Fixed. Affected: 0.4.4-2. Fixed in: 0.4.5-1. Group: AVG-1399. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Debian 9 — proftpd-dfsg — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — proftpd-dfsg — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 19 March 2021 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-12815 CVE-2019-18217 CVE-2020-9273 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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Arch Linux — helm — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — helm — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202106-52 Related CVEs: CVE-2021-32690 CVE-2021-21303 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 3.6.0-1. Fixed in: 3.6.1-1. Group: AVG-2078. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How To Install WordPress with LEMP on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install WordPress with LEMP on Ubuntu 18.04

WordPress is the most popular CMS (content management system) on the internet. It allows you to easily set up flexible blogs and websites on top of a MySQL backend with PHP processing. WordPress has seen incredible adoption and is a great choice for getting a website up and…

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