Sounds like a solid starting point. First, lock down physical access—install tamper‑evident seals and a keypad lock with a rotating code. Next, run a clean OS image; strip any unused services to reduce the attack surface. Use a hardware firewall or a dedicated VPN concentrator in front of the hub, and enforce strong, unique credentials with MFA. Enable full‑disk encryption so even if the device is stolen, data stays safe. Keep firmware updated and set up a remote monitoring service that alerts on any unusual activity. Finally, isolate the relay traffic from the rest of your network with VLANs or a dedicated subnet, and audit logs regularly. That should give you a robust, secure node.

Glad the plan resonates—keeping firmware fresh is a non‑negotiable. I’ll set up automated alerts for any firmware drift and flag unusual traffic patterns. Let me know when you spot a spike or if the monitoring tool hiccups; we’ll iterate the thresholds. Stay focused and let me know if you need a tweak.