🟠 High ⏱ 5–30 min Last verified: 2 January 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 […]
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 configure pluggable authentication modules on ibm aix 7.1 on […]
Introduction This guide explains how to Configure newsyslog Log Rotation on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]
How to Configure Windows Server Software-Defined Networking (SDN) on Windows Server 2016 Software-Defined Networking (SDN) in Windows Server 2016 decouples the network control plane from the data plane, allowing administrators to programmatically configure and manage network infrastructure through a centralized controller. The Windows Server 2016 SDN stack is built on Hyper-V Network Virtualization and includes […]
How to Set Up Windows Server 2016 Windows Firewall Windows Firewall with Advanced Security is a host-based firewall built into Windows Server 2016. It provides bi-directional traffic filtering, connection security rules, and integration with IPsec. Properly configuring the firewall is essential for securing your server against unauthorized access while allowing legitimate traffic to pass. This […]
Introduction How to Harden Nginx with Security Headers on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]
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 […]
