Introduction to Disaster Recovery Testing on Windows Server 2019 Disaster recovery (DR) testing is the practice of regularly executing and validating the procedures documented in your disaster recovery plan to ensure they actually work when needed. An untested recovery plan is, at best, an optimistic assumption. Organizations that skip DR testing often discover critical gaps […]
Introduction to RADIUS Authentication RADIUS (Remote Authentication Dial-In User Service) is a networking protocol that provides centralized authentication, authorization, and accounting (AAA) for network access. Windows Server 2019 implements RADIUS through the Network Policy Server (NPS) role. NPS acts as a RADIUS server that authenticates users trying to connect via VPN, wireless access points, 802.1X […]
How to Secure MySQL on RHEL 7 A default MySQL installation leaves several security gaps that can expose your databases to unauthorized access, data theft, or privilege escalation. On Red Hat Enterprise Linux 7, taking deliberate steps to harden MySQL immediately after installation is essential for any production or internet-facing system. This guide walks through […]
Introduction Deploying configure bonding network interfaces on debian 9 on a Debian 9 Stretch 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 Ensure Debian […]
Introduction How to Configure Ceph Storage Cluster 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 ā meaning version numbers, configuration file paths, and some dependency chains differ from Debian 9. […]
How to Set Up Remote Desktop Services Collections on Windows Server 2019 Remote Desktop Services Collections are logical groupings of RD Session Host servers in Windows Server 2019 that publish a common set of resources ā either full session desktops or RemoteApp programs ā to a defined group of users. Collections are managed centrally through […]
Introduction to RADIUS Proxy A RADIUS proxy receives authentication requests from RADIUS clients (VPN servers, wireless APs, switches) and forwards them to remote RADIUS servers based on configurable rules. Windows Server 2019 with the Network Policy Server (NPS) role can function as a RADIUS proxy in addition toāor instead ofāacting as a full RADIUS server. […]
Introduction to SMB File Shares and NTFS Permissions on Windows Server 2019 SMB (Server Message Block) file sharing is the foundation of Windows file services. Windows Server 2019 uses SMB 3.1.1 ā the latest protocol version ā which includes AES-128-GCM encryption, pre-authentication integrity checking, and improved performance. Combined with NTFS permissions (the access control system […]
How to Configure Network QoS with tc on RHEL 7 Quality of Service (QoS) is the practice of managing network traffic to ensure that critical applications receive the bandwidth and latency guarantees they need. Linux provides a sophisticated traffic control subsystem accessible through the tc (traffic control) command, part of the iproute2 package. With tc, […]
š High ā± 5ā30 min Last verified: 27 December 2019 Affected versions: Windows Server 2016 š ~2 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution ā Primary Fix Solution ā Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
