John DeMarzo
Cybersecurity-focused infrastructure builder with hands-on experience in virtualization, network segmentation, DNS architecture, and monitoring.
Actively developing a production-style homelab to simulate real-world environments and security workflows.
Core Focus
- Proxmox virtualization and infrastructure design
- VLAN segmentation and network security
- DNS architecture (Technitium)
- Monitoring and SIEM preparation
- Infrastructure as Code (Terraform & Ansible)
Featured Projects
Proxmox Cluster Architecture
Multi-node cluster with role-based workload separation, ZFS storage, and external backup using PBS.
View Project
VLAN Segmentation Design
Multi-network architecture separating management, internal, IoT, services, lab, and security environments.
View Project
Technitium DNS Deployment (Rebuild in Progress)
Dual-instance DNS with internal domain and planned Terraform + Ansible automation.
View Write-Up
Homelab Overview
The lab is built around a segmented network (10.12.x.0/24) with dedicated VLANs for management, services, IoT, lab environments, and security tooling.
A Proxmox cluster provides virtualization, with separate nodes for infrastructure, monitoring, and isolated lab workloads.
Certifications
- CompTIA A+
- CompTIA Network+
- CompTIA Security+
- Google Cybersecurity Certificate
Links