UDP 47808
Synopsis
- UDP port 47808 is the standard port for BACnet/IP (IANA service “bacnet”), used in building automation systems.
- Real-world systems using BACnet/IP on this port include Johnson Controls Metasys/Facility Explorer, Siemens Desigo/Apogee BACnet controllers, Honeywell EBI/ComfortPoint Open, Schneider Electric EcoStruxure Building Operation, Trane Tracer SC/Ensemble, Automated Logic WebCTRL, Delta Controls enteliWEB/enteliBAC, KMC Conquest/TotalControl, and Distech Controls.
- Integration platforms and gateways using it include Tridium Niagara AX/N4 (BACnet driver), Contemporary Controls BASrouter and BBMD devices, HMS Intesis and Sierra Monitor/FieldServer BACnet gateways, and Cimetrics BACstac-based applications.
- Common tools that query this port are YABE (Yet Another BACnet Explorer), SCADAEngine’s BACnet Discovery Tool, and Wireshark (BACnet dissector).
- Security note: UDP/47808 is often exposed on the internet; unauthenticated or weakly protected BACnet services have been abused for reconnaissance and, in some cases, unauthorized WriteProperty/commanding of HVAC, alarms, and access control, as documented in ICS-CERT advisories and internet-wide scans.
Observed activity
Last 30 days
Detailed chart