🟠 High ⏱ 5–30 min Last verified: 16 November 2021 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 […]
Introduction to Kerberos Authentication Kerberos is the default authentication protocol for Windows domain environments. Introduced with Windows 2000 and continually improved in Windows Server 2019, Kerberos provides mutual authentication—both the client and the server verify each other’s identity—and uses tickets rather than transmitting passwords over the network. Understanding Kerberos is essential for troubleshooting authentication failures, […]
How to Set Up Pacemaker and Corosync for High Availability on RHEL 7 High availability (HA) clustering prevents individual server failures from causing service outages by automatically detecting node failures and restarting workloads on surviving nodes. On RHEL 7, the standard HA stack is built from three components: Corosync, which provides reliable cluster messaging and […]
Introduction How to Configure a VXLAN Overlay Network on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]
Introduction This guide explains how to Configure ModSecurity WAF with Apache2 on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with […]
How to Set Up Windows Server 2016 Remote Desktop Web Access Remote Desktop Web Access (RD Web Access) is a role service in Windows Server 2016 Remote Desktop Services that provides a web-based portal for users to access RemoteApp programs, session-based desktops, and virtual desktops from any device with a web browser. Instead of distributing […]
OpenVAS (Open Vulnerability Assessment System), now distributed as Greenbone Community Edition, is a powerful open-source vulnerability scanner that identifies known CVEs, misconfigurations, and weak credentials across your network. Running it as a containerized stack on RHEL 8 keeps the scanner isolated and easy to update without conflicting with system packages. This tutorial covers deploying Greenbone […]
How to Build PowerShell Script Modules on Windows Server 2012 R2 PowerShell script modules are the standard packaging mechanism for distributing reusable functions, workflows, and cmdlets within an organization. A script module is simply a .psm1 file — a PowerShell script that defines functions and controls which of them are exported for use by consumers […]
How to Configure Remote Desktop Disk Redirection on Windows Server 2019 Remote Desktop disk redirection allows local drives, removable storage devices, and clipboard file transfers to appear within a Remote Desktop session on Windows Server 2019. When a user connects to an RD Session Host, their local drives (C:, D:, USB drives, etc.) can appear […]
Symfony is a mature, enterprise-grade PHP framework and a collection of reusable components that power many of the world’s largest PHP applications, including Drupal and parts of Laravel itself. It emphasises strict standards, comprehensive testing support, and long-term support releases that align well with RHEL 8’s stability-first philosophy. This tutorial covers installing the Symfony CLI […]
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