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Protocol Information
BACnet is a communications protocol for Building Automation and Control BAC networks that leverage the ASHRAE, ANSI, and ISO 16484-5 standard[1] protocol.
BACnet was designed to allow communication of building automation and control systems for applications such as heating, ventilating, and air-conditioning control [HVAC](https://en.wikipedia.org/wiki/HVAC), lighting control, access control, and fire detection systems and their associated equipment. The BACnet protocol provides mechanisms for computerized building automation devices to exchange information, regardless of the particular building service they perform.
From Wikipedia
Default port: 47808
PORT STATE SERVICE
47808/udp open BACNet -- Building Automation and Control NetworksEnumerate
Enumeration
Manual
pip3 install BAC0
import BAC0
bbmdIP = '<IP>:47808'
bbmdTTL = 900
bacnet = BAC0.connect(bbmdAddress=bbmdIP, bbmdTTL=bbmdTTL) #Connect
bacnet.vendorName.strValue
#I couldn't find how to obtain the same data as nmap with this library or any other
#talk me if you know how please
Automatic
nmap --script bacnet-info --script-args full=yes -sU -n -sV -p 47808 <IP>
This script does not attempt to join a BACnet network as a foreign device, it simply sends BACnet requests directly to an IP addressable device.
Shodan
port:47808 instance"Instance ID" "Vendor Name"
🎙️ HackTricks LIVE Twitch Wednesdays 5.30pm (UTC) 🎙️ - 🎥 Youtube 🎥
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