1,721,026 research outputs found
Experimental performance evaluation of a flow control algorithm for multimedia network applications over a WAN
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The LABNET-Server Software Architecture for Remote Management of Distributed Laboratories: Current Status and Perspectives
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Monitoring unauthorized internet accesses through a ‘honeypot’ system
No full textThe role of the Internet is continuously increasing and many technical, commercial, and business transactions are carried out by a multitude of users who exploit a set of specialized/sophisticated network applications. In this context, the task of network monitoring and surveillance is gaining great relevance and honeypots represent promising tools to get information, and understanding about the 'areas of interests' of attackers, as well as about the possible relations among 'blackhat' teams. The paper presents and discusses the results achieved by a group of honeypots deployed within the networks of the Department of Communication, Computer and System Science at the University of Genoa. The collected statistics, measured over 4-month long period, reveal that approximately 10 000 different attackers, coming from 130 different countries, have 'contacted' the honeypot system and that about 60 000 TCP distinct connections have logged in. Our high-interaction honeypot has counted more than 25 000 attempts to access a ssh server, thus permitting to trace many attempts to install rootkits. A comparison with results obtained by similar researches carried out in other laboratories is presented and commented
Sensor network based localization for continuous tracking applications: implementation and performance evaluation
Full text linkPerformance evaluation of measurement data acquisition mechanisms in a distributed computing environment integrating remote laboratory instrumentation
No full textThe usage of laboratory andmeasurement instrumentation of any kind, from large complex equipment to
networks of sensors that collectively appear as a distributed measurement device, has become of relevant
importance in all branches of experimental sciences. Owing to the increasing networking capacity and
access ubiquity, this bulk of instrumentation is ever more frequently accessed remotely by users who
want to perform experiments, collect and process experimental data, analyze and interpret results. With
reference to a remote instrumentation architecture deeply rooted in distributed computing paradigms
such as grids and clouds, we evaluate the performance of mechanisms for the collection of data generated
by instruments, in order to assess the capabilities of remote instrumentation services. In the presence of
instruments generating measurements at high rate, which must be delivered to a multiplicity of users,
publish/subscribe dispatching (push) mechanisms are shown to outperform pull-based ones
A new asset tracking architecture integrating RFID, Bluetooth Low Energy tags and ad hoc smartphone applications
No full textThe paper describes an original architecture aimed at tracking assets within construction sites. The main components are Radio Frequency IDentification (RFID), Bluetooth Low Energy (BLE) tags and smartphones. The core functions are performed by two Android applications, which implement asset tracking and searching. The main merits of the architecture are its ability to maximize smartphone battery lifetime, that can reach an entire working shift, very satisfactory accuracy of BLE tag-smartphone distance estimation (with a mean error around 2 [m]), high probability of detecting all the tags present in the construction site, as well as a suitably short Aging time
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