Check if port 67 is open
On the server, see what is listening:
sudo ss -tulpn | grep ':67 'From another machine, test reachability:
nc -zv your-server.example.com 67Port 67 (UDP) — DHCP server
DHCP server listens here for client requests.
🔒 Runs locally — your input never leaves this browser tab
- Port
67- Protocol
- UDP
- Service
- DHCP server
- Internet exposure risk
- Low
LAN only.