Secure Messaging in BACnet
The driving force that conceived BACnet (the protocol supported and maintained by ASHRAE Standing Standards Project Committee 135, www.bacnet.org) was the desire to interconnect different building control subsystems, with the focus on HVAC. Since then, BACnet has expanded to include other building subsystems (life-safety, lighting, access control), but the entire world of communications has evolved. The building automation system (BAS), which was an island to itself, has been inundated by the rising tide of interconnected systems. As outlined in the article, Enemies at the Gates (ASHRAE Journal, Nov. 2003, p. B24), this interconnectivity brings new security concerns to the BAS.
Citation: ASHRAE Journal, Vol. 47, No. 11Product Code(s): D-27059
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