Build a fully functional Active Directory network environment with a Domain Controller, a Child Domain, and a pfSense firewall — all step-by-step! This tutorial walks you through the complete setup process, perfect for students, IT beginners, home-lab builders, or anyone preparing for CompTIA, MCSA, CEH, or Cybersecurity hands-on training. What You Will Learn ✔ How to install and configure a Windows Server Domain Controller ✔ How to create and join a Child Domain (subdomain) ✔ Setting up pfSense as a firewall/router ✔ Connecting two servers through pfSense ✔ Configuring interfaces, DHCP, DNS & routing ✔ Building a secure and realistic virtual network lab