linuxsecuritychris.bsky.social

Post 5 — CTA Full topology, firewall rules & automated Bash setup: 👉 github.com/cahallchristopher/cahall-Cybersecurity-Portfolio/tree/main/projects/openwrt-cyberrange Open to cybersecurity, network security & infrastructure roles in Wisconsin. Let’s connect. #hiring #cybersecurityjobs #wisconsin

Post 3 — Firewall logic The firewall rules are where it gets interesting: ✅ Red team → DMZ (attack the targets) ✅ Red team → WAN (pull tools) ✅ Defenders → WAN (updates, research) ❌ Red team → LAN (no pivoting to defenders) ❌ WAN → anywhere (default deny)

I built a fully segmented enterprise cyber range on a single Ubuntu machine using OpenWrt + KVM. No cloud. No expensive hardware. Just one host running a network that behaves like a real company's. Here's how it works 👇 #cybersecurity #homelab #networking