93 research outputs found
A Brief Review of Security in Emerging Programmable Computer Networking Technologies
Recent programmable networking paradigms, such as cloud computing, fog computing, software- defined networks, and network function virtualization gain significant traction in industry and academia. While these newly developed networking technologies open a pathway to new architectures and enable a faster innovation cycle, there exist many problems in this area. In this article, we provide a review of these programmable networking architectures for comparison. Second, we provide a survey of security attacks and defense mechanisms in these emerging programmable networking technologies
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Aeronautical Gateways: Supporting TCP/IP-based Devices and Applications over Modern Telemetry Networks
ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, NevadaModern telemetry networks require the use of efficient domain-specific protocols at the transport, network, and routing layers. However, the existing end-devices and services are based on legacy protocols such as TCP/IP. This necessitates translation between the legacy and aeronautical protocol. In this paper we propose an efficient translation mechanism with the help of gateways at the telemetry network edges.International Foundation for TelemeteringProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection
Reliability analysis of SCADA systems used in the offshore oil and gas industry
“Reliability studies of systems have been an important area of research within electrical engineering for over a quarter of a century. In this thesis, the reliability analysis of the Supervisory Control And Data Acquisition (SCADA) systems used in offshore petroleum facilities was examined. This thesis presents fault trees for the platform production facilities, subsea control systems, a typical SCADA system, and the human induced fault tree. Software reliability was also studied. The fault trees were developed based on a safety flow chart and Process and Instrumentation Diagrams (P&ED). This work was conducted as a subcontract to the United States Department of the Interior, Mineral Management Service, Technology Assessment & Research Program, Program SOL 1435-01-99-RP-3995 (project no 356) to the University of Missouri-Rolla. Based on the fault tree diagrams and fault rates, the reliability of the SCADA system used in the offshore facilities was assessed. The failure availability of the SCADA system used in offshore platforms was also found”--Abstract, page iii
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Performance Comparison of Routing Protocols for Transactional Traffic over Aeronautical Networks
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, NevadaEmerging airborne telemetry networks present several challenges such that traditional MANET protocols do not perform well. On the other hand, application traffic characteristics are expected to be identical in this domain. Transactional application traffic performance has been studied for traditional MANETs, however this type of traffic has not been studied for domain-specific MANET scenarios. We present the simulation model for transactional traffic used in highly-mobile environments. Using the ns-3 simulator, we examine the performance of a domain-specific routing protocol, AeroRP, to route transactional traffic over the aeronautical environment and present performance comparison with two reactive (AODV and DSR) and two proactive (DSDV and OLSR) MANET routing protocols.International Foundation for TelemeteringProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection
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Performance Analysis of AeroRP with Ground Station Updates in Highly-Dynamic Airborne Telemetry Networks
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, NevadaHighly dynamic airborne telemetry networks pose unique challenges for data transmission. Domain-specific multi-hop routing protocols are necessary to cope with these challenges and AeroRP is one such protocol. In this paper, we discuss the operation of various AeroRP modes and analyse their performance using the ns-3 network simulator. We compare the performance of beacon, beaconless, and ground station (GS) modes of AeroRP. The simulation results show the advantages of having a domain-specific routing protocol and also highlight the importance of ground station updates in discovering routes.International Foundation for TelemeteringProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection
Variations in Graph Energy: A Measure for Network Resilience
There are many models and metrics developed to study the resilience of networks. Eigenvalues are the roots of the characteristic polynomial for a given graph and are mathematically rigorous compared to a statistical measure such as degree distribution. The graph energy is the sum of absolute values of eigenvalues; there is a subtle difference between the adjacency, Laplacian, and normalized Laplacian graph energy calculations. Our primary objective in this paper is to understand what different graph energy mean from a network resilience point of view. We calculate the adjacency, Laplacian, and normalized Laplacian graph energies on four backbone networks under targeted node and link attack scenarios. While adjacency and Laplacian graph energy decrease with node and link attacks, the normalized Laplacian energy increases with link attacks converging to a maximum value equal to the network order. The structural similarities of physical-level topologies is revealed by the close values of adjacency and Laplacian energies
Towards Cloud Security Improvement with Encryption Intensity Selection
The emergence of cloud computing has enabled users to store and manage data at a low cost and high availability, which made outsourcing data become appealing to its customers. Since the inception of cloud computing, efforts have been dedicated to improve the security and performance of cloudbased backup services. However, there is yet to be implemented a complete scheme that provides security, utility, and performance. Existing schemes focus on one aspect of the backup service; security of data, functionality of the scheme (e.g. searching data for a keyword), or performance. In this paper, we introduce a cloud backup system aiming to balance all three aspects of the service. The scheme utilizes encryption intensity selection, which allows users to select the encryption intensity of their files, secure deduplication, and querying on encrypted data. The performance of our cloud backup system is measured over an OpenStack cloud installed on CloudLab resources. Results demonstrate that our scheme can improve backup service security and performance while providing more functionality of the encrypted data
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