Port 47808: BACnet
Port 47808 is BACnet, the standard protocol for building automation systems that control HVAC, lighting, and access control in commercial buildings. Exposing it to the internet has led to real incidents of building systems being manipulated remotely.
| Port number | 47808 |
|---|---|
| Service | BACnet building automation |
| Protocol | UDP |
| Category | IoT & automation |
| Default encryption | No |
Frequently asked questions
What is port 47808 used for?
Port 47808 is BACnet, the standard protocol for building automation systems that control HVAC, lighting, and access control in commercial buildings. Exposing it to the internet has led to real incidents of building systems being manipulated remotely.
Is port 47808 TCP or UDP?
Port 47808 (BACnet) uses UDP.
Is port 47808 secure?
Port 47808 is not encrypted by default. Where possible, use an encrypted alternative or tunnel it over TLS or a VPN.
Should I open port 47808 on my firewall?
Only if you specifically need BACnet. Expose it to the smallest set of trusted sources, and never open database or Windows-service ports to the whole internet.