┌──┤ WHOAMI ├─────────▰▰▰ │ ├─▣ Systems Engineer ├─▣ Generally Fun Guy ├─▣ Technical projects blog ├─▣ DevOps · Networking · Security · Web Dev · Administration ├─▣ More info at marcusholtz.com ├─▣ Business Card: curl marcusholtz.com/card │ └──────────────────────────────▰▰▰ ┌──┤ SOCIAL ├─────────◆◇◆ │ ├─◈ Email ├─◈ LinkedIn ├─◈ YouTube ├─◈ Signal │ └─────────────────────────◆◇◆
▸ Security & Privacy
┌──┤ SECURITY ├───────●○● │ ├─◉ WAF Smoke Test Script │ OWASP attack simulation for firewall validation │ ├─◉ Geofiltered IP Blocklist Aggregator │ Automated threat intel feed curation by geography │ ├─◉ VPN over Port 53 │ DNS-tunneled VPN for restrictive networks │ ├─◉ Hidden VPN That Looks Like a Website │ Steganographic VPN masquerading as HTTPS traffic │ ├─◉ Tor Hidden Service with Vanity .onion │ Anonymous hosting with custom .onion addressing │ ├─◉ Web Browser Privacy Presentation │ Privacy hardening walkthrough and threat model │ ├─◉ OpenWRT Router Firmware Presentation │ Open-source router firmware for network security │ └──────────────────────────────●○●
▸ Infrastructure & DevOps
┌──┤ INFRA ├──────────▰▱▰ │ ├─◆ Self-Hosted GitLab with CI Runners & TLS │ Full CI/CD pipeline, self-managed with TLS termination │ ├─◆ Auto-Updating Resume Pipeline │ CI-driven resume generation from structured source │ ├─◆ Authentik SSO with Traefik ForwardAuth │ Zero-trust authentication layer for self-hosted services │ ├─◆ After-Hours Network Lockdown │ Scheduled WiFi, firewall, and SSO policy enforcement │ ├─◆ ZFS Storage & Snapshot Architecture │ Automated backup and disaster recovery on Proxmox │ ├─◆ Grafana + Alloy + Loki Observability Stack │ Full monitoring pipeline for homelab infrastructure │ ├─◆ Transparent Nginx WAF on OPNsense │ Inline web application firewall with failover │ └─────────────────────────────▰▱▰
▸ Networking & Web
┌──┤ NET & WEB ├──────◇◆◇ │ ├─● Docker MacVLAN Traefik Analytics │ Container networking with traffic visibility │ ├─● Cloudflare Email Routing & Aliasing │ Unlimited forwarding addresses via Cloudflare workers │ ├─● Astro Portfolio Theme │ Static site portfolio template built with Astro │ ├─● Reticulum Mesh Network Demo │ Decentralized mesh networking proof of concept │ ├─● Download My Photo Using DNS │ File transfer encoded entirely in DNS TXT records │ └────────────────────────────◇◆◇
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┌──┤ EXIT ├───────────▰▰▰ │ ├─▣ Thanks for stopping by. ├─▣ Want the quick version? curl marcusholtz.com/card ├─▣ Want the full story? marcusholtz.com │ └──────────────────────────────▰▰▰