Methods Inf Med - Wireless LAN security management with location detection capability in hospitals.

Tópicos

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Resumo

JECTIVES: In medical institutions, unauthorized access points and terminals obstruct the stable operation of a large-scale wireless local area network (LAN) system. By establishing a real-time monitoring method to detect such unauthorized wireless devices, we can improve the efficiency of security management.METHODS: We detected unauthorized wireless devices by using a centralized wireless LAN system and a location detection system at 370 access points at the University of Tokyo Hospital. By storing the detected radio signal strength and location information in a database, we evaluated the risk level from the detection history. We also evaluated the location detection performance in our hospital ward using Wi-Fi tags.RESULTS: The presence of electric waves outside the hospital and those emitted from portable game machines with wireless communication capability was confirmed from the detection result. The location detection performance showed an error margin of approximately 4 m in detection accuracy and approximately 5% in false detection. Therefore, it was effective to consider the radio signal strength as both an index of likelihood at the detection location and an index for the level of risk.CONCLUSIONS: We determined the location of wireless devices with high accuracy by filtering the detection results on the basis of radio signal strength and detection history. Results of this study showed that it would be effective to use the developed location database containing radio signal strength and detection history for security management of wireless LAN systems and more general-purpose location detection applications.

Resumo Limpo

jectiv medic institut unauthor access point termin obstruct stabl oper largescal wireless local area network lan system establish realtim monitor method detect unauthor wireless devic can improv effici secur managementmethod detect unauthor wireless devic use central wireless lan system locat detect system access point univers tokyo hospit store detect radio signal strength locat inform databas evalu risk level detect histori also evalu locat detect perform hospit ward use wifi tagsresult presenc electr wave outsid hospit emit portabl game machin wireless communic capabl confirm detect result locat detect perform show error margin approxim m detect accuraci approxim fals detect therefor effect consid radio signal strength index likelihood detect locat index level riskconclus determin locat wireless devic high accuraci filter detect result basi radio signal strength detect histori result studi show effect use develop locat databas contain radio signal strength detect histori secur manag wireless lan system generalpurpos locat detect applic

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