Cybersecurity • Networking
Hi, I’m Joe Severino
Delivery Operations Analyst • CCNA • Security+ • ISC2 CC
M.S. Cybersecurity (in progress), Georgia Tech
Building hands-on security projects across network defense, endpoint monitoring, application hardening, and automation.
📍 St. Louis, MO
Featured Projects
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Zero-Trust Private Infrastructure with Tailscale, Caddy, and Layered Firewalls
A private cloud and homelab architecture using Tailscale, Caddy, private DNS, browser-trusted TLS, nftables, and DOCKER-USER filtering to keep internal services reachable to trusted devices only.
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Deploying Local DNS Filtering with AdGuard Home and Docker Engine
A self-hosted DNS filtering setup built on Docker Engine with host networking for per-device query visibility, Tailscale peer routing for tailnet-wide filtering, and internal HTTPS through Nginx Proxy Manager backed by a private Root CA.
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Building a Homelab with Tailscale, Docker, Local HTTPS, and a Private Root CA
A retired Dell OptiPlex turned into an always-on private homelab for remote LAN access, containerized services, reverse proxying, and trusted internal HTTPS.
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Architecting a Custom Detection Engine with File Integrity and Security Event Monitoring
A custom application-layer detection engine with file integrity monitoring, security event logging, Zero Trust-protected testing, and Git-based deployment.
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Securing My WordPress Site with Cloudflare, CSP, and Passkey Authentication
A WordPress hardening project that combines Cloudflare edge security, a custom security plugin, browser-enforced policies, reduced default exposure, and a passkey-only admin login.
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Simulating ARP Spoofing with Mininet and Demonstrating Enterprise Mitigations
A networking security lab that simulates ARP spoofing in Mininet, analyzes packet captures in Wireshark, and demonstrates enterprise mitigations using DHCP Snooping and Dynamic ARP Inspection in Cisco Packet Tracer.
About Me
I started building things on the web early, long before I understood the systems behind what I was setting up. Over time, that curiosity turned into a deeper interest in how networks, infrastructure, and security actually work.
Today, my focus is network security and the systems behind it. I still approach projects the same way, but I take the time to write everything out as I go so I understand what I built and can come back to it later.