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writeup · Mar 1, 2026

Building a Cybersecurity Homelab

Designing an enterprise-style lab on VirtualBox — networking, Active Directory, and the path toward SIEM and detection engineering.

HomelabActive DirectoryNetworking

Why a homelab

I wanted a controlled place to practice both sides of the fight: administer systems like a defender, then attack them like an adversary — without putting anyone else's network at risk. The Homelab repo tracks the build in public so the process itself becomes a portfolio artifact.

Architecture

The lab runs on a Windows 11 host with Oracle VirtualBox:

  • Internal subnet 192.168.56.0/24 via host-only adapter
  • NAT for controlled outbound access
  • Mix of Windows Server 2022, Ubuntu Server, and Kali Linux guests

Current phases

  1. Lab foundation and networking — complete
  2. AD identity and access — complete
  3. Log collection and SIEM onboarding — in progress
  4. Vulnerability management workflow — planned
  5. Attack simulation and detection — planned
  6. Linux hardening and monitoring — planned

Tooling in play

Wazuh, Sysmon, Nmap, Wireshark, Nessus/OpenVAS, Metasploit, and Burp Suite sit alongside Active Directory, DNS, and Group Policy. The goal isn't collecting logos — it's generating realistic telemetry and practicing the loop from exploit to detection to remediation.

What's next

SIEM onboarding is the current focus. Once logs are trustworthy, attack simulation becomes useful instead of noisy. Follow the repo for phase writeups as they ship.