14,027 research outputs found
Development of a hardware-In-the-Loop (HIL) testbed for cyber-physical security in smart buildings
As smart buildings move towards open communication technologies, providing
access to the Building Automation System (BAS) through the intranet, or even
remotely through the Internet, has become a common practice. However, BAS was
historically developed as a closed environment and designed with limited
cyber-security considerations. Thus, smart buildings are vulnerable to
cyber-attacks with the increased accessibility. This study introduces the
development and capability of a Hardware-in-the-Loop (HIL) testbed for testing
and evaluating the cyber-physical security of typical BASs in smart buildings.
The testbed consists of three subsystems: (1) a real-time HIL emulator
simulating the behavior of a virtual building as well as the Heating,
Ventilation, and Air Conditioning (HVAC) equipment via a dynamic simulation in
Modelica; (2) a set of real HVAC controllers monitoring the virtual building
operation and providing local control signals to control HVAC equipment in the
HIL emulator; and (3) a BAS server along with a web-based service for users to
fully access the schedule, setpoints, trends, alarms, and other control
functions of the HVAC controllers remotely through the BACnet network. The
server generates rule-based setpoints to local HVAC controllers. Based on these
three subsystems, the HIL testbed supports attack/fault-free and
attack/fault-injection experiments at various levels of the building system.
The resulting test data can be used to inform the building community and
support the cyber-physical security technology transfer to the building
industry.Comment: Presented at the 2023 ASHRAE Winter Conferenc
Survey of End-to-End Mobile Network Measurement Testbeds, Tools, and Services
Mobile (cellular) networks enable innovation, but can also stifle it and lead
to user frustration when network performance falls below expectations. As
mobile networks become the predominant method of Internet access, developer,
research, network operator, and regulatory communities have taken an increased
interest in measuring end-to-end mobile network performance to, among other
goals, minimize negative impact on application responsiveness. In this survey
we examine current approaches to end-to-end mobile network performance
measurement, diagnosis, and application prototyping. We compare available tools
and their shortcomings with respect to the needs of researchers, developers,
regulators, and the public. We intend for this survey to provide a
comprehensive view of currently active efforts and some auspicious directions
for future work in mobile network measurement and mobile application
performance evaluation.Comment: Submitted to IEEE Communications Surveys and Tutorials. arXiv does
not format the URL references correctly. For a correctly formatted version of
this paper go to
http://www.cs.montana.edu/mwittie/publications/Goel14Survey.pd
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FABRIC: A National-Scale Programmable Experimental Network Infrastructure
FABRIC is a unique national research infrastructure to enable cutting-edge and exploratory research at-scale in networking, cybersecurity, distributed computing and storage systems, machine learning, and science applications. It is an everywhere-programmable nationwide instrument comprised of novel extensible network elements equipped with large amounts of compute and storage, interconnected by high speed, dedicated optical links. It will connect a number of specialized testbeds for cloud research (NSF Cloud testbeds CloudLab and Chameleon), for research beyond 5G technologies (Platforms for Advanced Wireless Research or PAWR), as well as production high-performance computing facilities and science instruments to create a rich fabric for a wide variety of experimental activities
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