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Windows Server • Cisco • PowerShell • Security • Training

Windows Server Hardening Checklist (2026 Edition) – Practical Security Guide

Windows Server • Security • Hardening • Active Directory

A practical Windows Server hardening checklist for 2026: patching, AD/GPO baselines, RDP protection, firewall rules, logging, accounts, and monitoring.

Why DNS Breaks Authentication in Windows Domains (Step-by-Step Fix Guide)

Windows Server • Networking

Step-by-step troubleshooting guide to fix Windows Active Directory authentication failures caused by DNS misconfiguration. Practical commands and permanent solutions.

Essential PowerShell Commands Every Network Administrator Should Know

PowerShell • Network Administration • Windows Server • Automation

Practical PowerShell commands for network administrators including DNS checks, Active Directory queries, connectivity tests and remote management.

Nmap Deep Dive – Practical Network Reconnaissance

Windows Server • Networking

A practical engineer-focused guide to Nmap scanning techniques, performance tuning, and enterprise use cases.

How to Troubleshoot Active Directory Replication Failures Step-by-Step

Windows Server • Active Directory • Replication • Troubleshooting

Step-by-step guide to diagnose and fix Active Directory replication failures using repadmin, dcdiag and built-in Windows Server tools.