DNS

How to Configure a DHCP Server on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure a DHCP Server on Windows Server 2012 R2

How to Configure a DHCP Server on Windows Server 2012 R2 The Dynamic Host Configuration Protocol (DHCP) automates the assignment of IP addresses, subnet masks, default gateways, DNS servers, and other network configuration parameters to clients on a network. Without DHCP, every device would require manual static IP configuration — an unmanageable burden in environments […]

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Rocky Linux 8 — python-dns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — python-dns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2023:5994 Related CVEs: CVE-2023-40217 CVE-2023-32681 Upstream summary: Python is an interpreted, interactive, object-oriented programming language that supports modules, classes, exceptions, high-level dynamic data types, and dynamic typing. The python27 packages […]

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Common Problems 117911

Ubuntu 18.04 APT Lock File Error During Package Install

🟡 Medium   ⏱ 5–30 min  Last verified: 23 February 2023 📖 ~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 113455

Windows Server 2012 R2 — PXE clients fail to obtain boot options from DHCP policy classes on Server 2019 — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 February 2023 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Common Problems 111875

Windows Server 2022 Firewall Blocks WinRM and Remote Management Ports – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 February 2023 Affected versions: Windows Server 2022 📖 ~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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How to Configure a DNS Server on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure a DNS Server on Windows Server 2012 R2

How to Configure a DNS Server on Windows Server 2012 R2 The Domain Name System (DNS) is the backbone of name resolution in Windows environments. Without properly configured DNS, Active Directory cannot function, client computers cannot find domain controllers, and users cannot resolve internal or external hostnames. Windows Server 2012 R2 includes the DNS Server […]

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How to Set Up Windows Server 2022 QoS Policies — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up Windows Server 2022 QoS Policies

Introduction to Web Deploy on Windows Server 2022 Web Deploy (msdeploy.exe) is Microsoft’s deployment tool for synchronizing web applications, databases, and server configurations between machines. It integrates with IIS, Visual Studio, and CI/CD pipelines to enable one-command deployments that transfer only changed files, transform configuration, and execute pre/post-deployment scripts. This guide covers every component from […]

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Common Problems 124607

Oracle Linux 9 – Common Problem 015 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 22 February 2023 Affected versions: Oracle Linux 9 📖 ~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 111811

Windows Server 2022 — SQL Server TDE-encrypted database backup failing on Server 2022 — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 February 2023 Affected versions: Windows Server 2022 📖 ~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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How to Install Composer on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Install Composer on Oracle Linux 9

Introduction How to Install Composer on Oracle Linux 9 on Oracle Linux 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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