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Title: A Comparison of Model Checking Tools for Service Oriented Architectures.
Creator: Venkat, Raghava, Khoshgoftaar, Taghi M., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Recently most of the research pertaining to Service-Oriented Architecture (SOA) is based on web services and how secure they are in terms of efficiency and effectiveness. This requires validation, verification, and evaluation of web services. Verification and validation should be collaborative when web services from different vendors are integrated together to carry out a coherent task. For this purpose, novel model checking technologies have been devised and applied to web services. "Model...
Show moreRecently most of the research pertaining to Service-Oriented Architecture (SOA) is based on web services and how secure they are in terms of efficiency and effectiveness. This requires validation, verification, and evaluation of web services. Verification and validation should be collaborative when web services from different vendors are integrated together to carry out a coherent task. For this purpose, novel model checking technologies have been devised and applied to web services. "Model Checking" is a promising technique for verification and validation of software systems. WS-BPEL (Business Process Execution Language for Web Services) is an emerging standard language to describe web service composition behavior. The advanced features of BPEL such as concurrency and hierarchy make it challenging to verify BPEL models. Based on all such factors my thesis surveys a few important technologies (tools) for model checking and comparing each of them based on their "functional" and "non-functional" properties. The comparison is based on three case studies (first being the small case, second medium and the third one a large case) where we construct synthetic web service compositions for each case (as there are not many publicly available compositions [1]). The first case study is "Enhanced LoanApproval Process" and is considered a small case. The second is "Enhanced Purchase Order Process" which is of medium size and the third, and largest is based on a scientific workflow pattern, called the "Service Oriented Architecture Implementing BOINC Workflow" based on BOINC (Berkeley Open Infrastructure Network Computing) architecture.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012565
Subject Headings: Computer network architectures, Expert systems (Computer science), Software engineering, Web servers--Management
Format: Document (PDF)

Title: A REFERENCE ARCHITECTURE FOR NETWORK FUNCTION VIRTUALIZATION.
Creator: Alwakeel, Ahmed M., Fernandez, Eduardo B., Florida Atlantic University, Department of Computer and Electrical Engineering and Computer Science, College of Engineering and Computer Science
Abstract/Description: Cloud computing has provided many services to potential consumers, one of these services being the provision of network functions using virtualization. Network Function Virtualization is a new technology that aims to improve the way we consume network services. Legacy networking solutions are different because consumers must buy and install various hardware equipment. In NFV, networks are provided to users as a software as a service (SaaS). Implementing NFV comes with many benefits, including...
Show moreCloud computing has provided many services to potential consumers, one of these services being the provision of network functions using virtualization. Network Function Virtualization is a new technology that aims to improve the way we consume network services. Legacy networking solutions are different because consumers must buy and install various hardware equipment. In NFV, networks are provided to users as a software as a service (SaaS). Implementing NFV comes with many benefits, including faster module development for network functions, more rapid deployment, enhancement of the network on cloud infrastructures, and lowering the overall cost of having a network system. All these benefits can be achieved in NFV by turning physical network functions into Virtual Network Functions (VNFs). However, since this technology is still a new network paradigm, integrating this virtual environment into a legacy environment or even moving all together into NFV reflects on the complexity of adopting the NFV system. Also, a network service could be composed of several components that are provided by different service providers; this also increases the complexity and heterogeneity of the system. We apply abstract architectural modeling to describe and analyze the NFV architecture. We use architectural patterns to build a flexible NFV architecture to build a Reference Architecture (RA) for NFV that describe the system and how it works. RAs are proven to be a powerful solution to abstract complex systems that lacks semantics. Having an RA for NFV helps us understand the system and how it functions. It also helps us to expose the possible vulnerabilities that may lead to threats toward the system. In the future, this RA could be enhanced into SRA by adding misuse and security patterns for it to cover potential threats and vulnerabilities in the system. Our audiences are system designers, system architects, and security professionals who are interested in building a secure NFV system.
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Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013434
Subject Headings: Virtual computer systems, Cloud computing, Computer network architectures, Computer networks
Format: Document (PDF)

Title: Broadband-ISDN signaling: Protocol description and enhancements for future services.
Creator: Vasi, Idris Taher., Florida Atlantic University, Lobo, Andrea, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Broadband-ISDN Network Architecture and Signaling concepts are described with particular emphasis on Asynchronous Transfer Mode (ATM) technology. A consolidated view of various aspects of B-ISDN/ATM Access and Network Signaling functions, architecture and protocols is presented. Additionally, a suggested evolutionary growth path for the B-ISDN signaling protocols is summarized. This is followed by a high-level comparison of two protocols under consideration for network signaling. The result...
Show moreBroadband-ISDN Network Architecture and Signaling concepts are described with particular emphasis on Asynchronous Transfer Mode (ATM) technology. A consolidated view of various aspects of B-ISDN/ATM Access and Network Signaling functions, architecture and protocols is presented. Additionally, a suggested evolutionary growth path for the B-ISDN signaling protocols is summarized. This is followed by a high-level comparison of two protocols under consideration for network signaling. The result of this evaluation indicates that the requirements of network signaling are best met by a protocol stack based on SS7 concepts. Finally, a set of future B-ISDN and Multimedia services is presented in context of the requirements they would impose on the signaling protocols. Enhancements to the access signaling protocol are proposed for the support of multiconnection and/or multiparty calls. These extensions/enhancements consist of a set of simplified messages, information elements and procedures based on message flows. Evolution and backward compatibility to existing protocols are taken into account while developing the extensions.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15016
Subject Headings: Asynchronous transfer mode, Computer network architectures, Broadband communication systems, Data transmission systems, Computer network protocols, Integrated services digital networks
Format: Document (PDF)

Title: Counter-rotating slotted ring: A new metropolitan area network architecture.
Creator: Choi, Kwok K., Florida Atlantic University, Ilyas, Mohammad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: In this dissertation a new architecture, Counter Rotating Slotted Ring (CRSR), is proposed for Metropolitan Area Networks (MANs). MANs are newly developed optical fiber based networks that have high data transmission rates and wide area coverage. They provide voice, video and data services. A CRSR has a dual-ring architecture that consists of two uni-directional transmission media, which are shared among the network nodes. The transmission time in a CRSR is divided into fixed length slots....
Show moreIn this dissertation a new architecture, Counter Rotating Slotted Ring (CRSR), is proposed for Metropolitan Area Networks (MANs). MANs are newly developed optical fiber based networks that have high data transmission rates and wide area coverage. They provide voice, video and data services. A CRSR has a dual-ring architecture that consists of two uni-directional transmission media, which are shared among the network nodes. The transmission time in a CRSR is divided into fixed length slots. These slots are generated by a head station during the system initialization phase. They flow inside the dual-ring in opposite directions: clockwise and counter clockwise. In each slot, there is an Access Control Field, a Segment Header Field and a Segment Payload Field. These fields contain slot control bits, segment identification and data respectively. One of the control bits is used to indicate if a slot has data or not. Once a busy slot, i.e. a slot with data, reaches its destination, it is marked as 'read'. An eraser node is used to identify 'read' slots and erase the data in the slots. In CRSR, there are two possible routes to send data from one node to another. The route with fewer nodes in between is always selected. This Minimum Node Count Routing reduces traffic on the transmission medium. IEEE has issued a Distributed Queue Dual Bus (DQDB) 802.6 standard for the subnetwork of a MAN. Under most circumstances, DQDB performs better than Fiber Distributed Data Interface (FDDI), an ANSI MAN standard. However, DQDB has two drawbacks: positional unfairness and poor channel efficiency. A number of solutions have been proposed to solve the unfairness problem, but these approaches do not improve the situation without negative effects on network performance. A CRSR with eraser in all its nodes has two times as much maximum throughput as an equivalent DQDB and at the same time, it is a positionally fair network. Although CRSRs with fewer eraser nodes are unfair, they always outperform equivalent DQDBs both in throughput and fairness.
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Date Issued: 1993
PURL: http://purl.flvc.org/fcla/dt/12340
Subject Headings: Metropolitan area networks (Computer networks), Computer network architectures
Format: Document (PDF)

Title: Distributed management of heterogeneous networks using hypermedia data repositories.
Creator: Anderson, James M., Florida Atlantic University, Ilyas, Mohammad, Hsu, Sam, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Current management architectures address portions of the problem of managing high speed distributed networks; however, they do not provide a scalable end-to-end solution that can be applied to both large LAN and WAN high speed distributed networks. A new management architecture, "Web Integrated Network for Distributed Management Including Logic" (WINDMIL), is proposed to address the challenges of managing complex heterogeneous networks. The three primary components of the system are the...
Show moreCurrent management architectures address portions of the problem of managing high speed distributed networks; however, they do not provide a scalable end-to-end solution that can be applied to both large LAN and WAN high speed distributed networks. A new management architecture, "Web Integrated Network for Distributed Management Including Logic" (WINDMIL), is proposed to address the challenges of managing complex heterogeneous networks. The three primary components of the system are the Network Management Server (NMS), the Network Element Web Server (NEWS), and the Operator's Logic and Processing Platform (OLAPP). The NMS stores the management functions used by both the NEWS and the user. The NEWS is a Web server which collects and processes network element data in order to support management functions. The OLAPP executes the management functions and interfaces with the user.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/12502
Subject Headings: Computer network architectures, Internetworking (Telecommunication), Computer network protocols
Format: Document (PDF)

Title: MACHINE LEARNING DEMODULATOR ARCHITECTURES FOR POWER-LIMITED COMMUNICATIONS.
Creator: Gorday, Paul E., Nurgun, Erdol, Florida Atlantic University, Department of Computer and Electrical Engineering and Computer Science, College of Engineering and Computer Science
Abstract/Description: The success of deep learning has renewed interest in applying neural networks and other machine learning techniques to most fields of data and signal processing, including communications. Advances in architecture and training lead us to consider new modem architectures that allow flexibility in design, continued learning in the field, and improved waveform coding. This dissertation examines neural network architectures and training methods suitable for demodulation in power-limited...
Show moreThe success of deep learning has renewed interest in applying neural networks and other machine learning techniques to most fields of data and signal processing, including communications. Advances in architecture and training lead us to consider new modem architectures that allow flexibility in design, continued learning in the field, and improved waveform coding. This dissertation examines neural network architectures and training methods suitable for demodulation in power-limited communication systems, such as those found in wireless sensor networks. Such networks will provide greater connection to the world around us and are expected to contain orders of magnitude more devices than cellular networks. A number of standard and proprietary protocols span this space, with modulations such as frequency-shift-keying (FSK), Gaussian FSK (GFSK), minimum shift keying (MSK), on-off-keying (OOK), and M-ary orthogonal modulation (M-orth). These modulations enable low-cost radio hardware with efficient nonlinear amplification in the transmitter and noncoherent demodulation in the receiver.
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Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013511
Subject Headings: Deep learning, Machine learning--Technique, Demodulators, Wireless sensor networks, Computer network architectures
Format: Document (PDF)

Title: Model-Driven Architecture and the Secure Systems Methodology.
Creator: Morrison, Patrick, Fernandez, Eduardo B., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: As a compamon and complement to the work being done to build a secure systems methodology, this thesis evaluates the use of Model-Driven Architecture (MDA) in support of the methodology's lifecycle. The development lifecycle illustrated follows the recommendations of this secure systems methodology, while using MDA models to represent requirements, analysis, design, and implementation information. In order to evaluate MDA, we analyze a well-understood distributed systems security problem,...
Show moreAs a compamon and complement to the work being done to build a secure systems methodology, this thesis evaluates the use of Model-Driven Architecture (MDA) in support of the methodology's lifecycle. The development lifecycle illustrated follows the recommendations of this secure systems methodology, while using MDA models to represent requirements, analysis, design, and implementation information. In order to evaluate MDA, we analyze a well-understood distributed systems security problem, remote access, as illustrated by the internet "secure shell" protocol, ssh. By observing the ability of MDA models and transformations to specify remote access in each lifecycle phase, MDA's strengths and weaknesses can be evaluated in this context. A further aim of this work is to extract concepts that can be contained in an MDA security metamodel for use in future projects.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012537
Subject Headings: Expert systems (Computer science), Software engineering, Computer-aided design, Computer network architectures
Format: Document (PDF)

Title: Modeling and analysis of security.
Creator: Ajaj, Ola, Fernandez, Eduardo B., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Cloud Computing is a new computing model consists of a large pool of hardware and software resources on remote datacenters that are accessed through the Internet. Cloud Computing faces significant obstacles to its acceptance, such as security, virtualization, and lack of standardization. For Cloud standards, there is a long debate about their role, and more demands for Cloud standards are put on the table. The Cloud standardization landscape is so ambiguous. To model and analyze security...
Show moreCloud Computing is a new computing model consists of a large pool of hardware and software resources on remote datacenters that are accessed through the Internet. Cloud Computing faces significant obstacles to its acceptance, such as security, virtualization, and lack of standardization. For Cloud standards, there is a long debate about their role, and more demands for Cloud standards are put on the table. The Cloud standardization landscape is so ambiguous. To model and analyze security standards for Cloud Computing and web services, we have surveyed Cloud standards focusing more on the standards for security, and we classified them by groups of interests. Cloud Computing leverages a number of technologies such as: Web 2.0, virtualization, and Service Oriented Architecture (SOA). SOA uses web services to facilitate the creation of SOA systems by adopting different technologies despite their differences in formats and protocols. Several committees such as W3C and OASIS are developing standards for web services; their standards are rather complex and verbose. We have expressed web services security standards as patterns to make it easy for designers and users to understand their key points. We have written two patterns for two web services standards; WS-Secure Conversation, and WS-Federation. This completed an earlier work we have done on web services standards. We showed relationships between web services security standards and used them to solve major Cloud security issues, such as, authorization and access control, trust, and identity management. Close to web services, we investigated Business Process Execution Language (BPEL), and we addressed security considerations in BPEL and how to enforce them. To see how Cloud vendors look at web services standards, we took Amazon Web Services (AWS) as a case-study. By reviewing AWS documentations, web services security standards are barely mentioned. We highlighted some areas where web services security standards could solve some AWS limitations, and improve AWS security process. Finally, we studied the security guidance of two major Cloud-developing organizations, CSA and NIST. Both missed the quality of attributes offered by web services security standards. We expanded their work and added benefits of adopting web services security standards in securing the Cloud.
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Date Issued: 2013
PURL: http://purl.flvc.org/fau/fd/FA0004001
Subject Headings: Cloud Computing, Computational grids (Computer systems), Computer network architectures, Expert systems (Computer science), Web services -- Management
Format: Document (PDF)

Title: Multi-Path Intelligent Virtual Mobile Nodes for Ad Hoc Networks.
Creator: Qian, Binbin, Wu, Jie, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: In mobile ad hoc networks, it is challenging to solve the standard problems encountered in fixed network because of the unpredictable motion of mobile nodes. Due to the lack of a fixed infrastructure to serve as the backbone of the network, it is difficult to manage nodes' locations and ensure the stable node performance. The virtual mobile node (VMN) abstraction that has been applied implements an virtual mobile node that consists of a set of real nodes traveling on one predetermined virtual...
Show moreIn mobile ad hoc networks, it is challenging to solve the standard problems encountered in fixed network because of the unpredictable motion of mobile nodes. Due to the lack of a fixed infrastructure to serve as the backbone of the network, it is difficult to manage nodes' locations and ensure the stable node performance. The virtual mobile node (VMN) abstraction that has been applied implements an virtual mobile node that consists of a set of real nodes traveling on one predetermined virtual path to collect messages and deliver them to the destinations when they meet. It conquers the unpredictable motion with virtual nodes' predictable motion. But it encounters unavoidable failure when all the nodes leave the VMN region and stop emulating the VMN. We extend the idea of the VMN abstraction to the Multi-path Intelligent Virtual Mobile Node (MIVMN) abstraction, which allows the messages to switch between multiple Hamiltonian paths to increase the message delivery ratio and decrease the failure rate of the virtual nodes. Through simulation results we show that the MIVMN abstraction successfully meets our goals.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012542
Subject Headings: Routers (Computer networks), Computer network architectures, Wireless communication systems, Computer algorithms
Format: Document (PDF)

Title: A next generation computer network communications architecture.
Creator: Thor, Bernice Lynn., Florida Atlantic University, Ilyas, Mohammad, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: A Next Generation Computer Network Communications Architecture, CNCA, is developed in this thesis. Existing communication techniques and available networking technologies are explored. This provides the background information for the development of the architecture. Hardware, protocol, and interface requirements are addressed to provide a practical architecture for supporting high speed communications beyond current implementations. A reduction process is then performed to extract the optimal...
Show moreA Next Generation Computer Network Communications Architecture, CNCA, is developed in this thesis. Existing communication techniques and available networking technologies are explored. This provides the background information for the development of the architecture. Hardware, protocol, and interface requirements are addressed to provide a practical architecture for supporting high speed communications beyond current implementations. A reduction process is then performed to extract the optimal components for the CNCA platform. The resulting architecture describes a next generation communications device that is capable of very fast switching and fast processing of information. The architecture interfaces with existing products, and provides extensive flexibility. This protects existing equipment investments, and supports future enhancements.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14726
Subject Headings: Computer network architectures, Computer networks
Format: Document (PDF)

Title: A pattern-driven process for secure service-oriented applications.
Creator: Delessy, Nelly A., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: During the last few years, Service-Oriented Architecture (SOA) has been considered to be the new phase in the evolution of distributed enterprise applications. Even though there is a common acceptance of this concept, a real problem hinders the widespread use of SOA : A methodology to design and build secure service-oriented applications is needed. In this dissertation, we design a novel process to secure service-oriented applications. Our contribution is original not only because it applies...
Show moreDuring the last few years, Service-Oriented Architecture (SOA) has been considered to be the new phase in the evolution of distributed enterprise applications. Even though there is a common acceptance of this concept, a real problem hinders the widespread use of SOA : A methodology to design and build secure service-oriented applications is needed. In this dissertation, we design a novel process to secure service-oriented applications. Our contribution is original not only because it applies the MDA approach to the design of service-oriented applications but also because it allows their securing by dynamically applying security patterns throughout the whole process. Security patterns capture security knowledge and describe security mechanisms. In our process, we present a structured map of security patterns for SOA and web services and its corresponding catalog. At the different steps of a software lifecycle, the architect or designer needs to make some security decisions., An approach using a decision tree made of security pattern nodes is proposed to help making these choices. We show how to extract a decision tree from our map of security patterns. Model-Driven Architecture (MDA) is an approach which promotes the systematic use of models during a system's development lifecycle. In the dissertation we describe a chain of transformations necessary to obtain secure models of the service-oriented application. A main benefit of this process is that it decouples the application domain expertise from the security expertise that are both needed to build a secure application. Security knowledge is captured by pre-defined security patterns, their selection is rendered easier by using the decision trees and their application can be automated. A consequence is that the inclusion of security during the software development process becomes more convenient for the architects/designers., A second benefit is that the insertion of security is semi-automated and traceable. Thus, the process is flexible and can easily adapt to changing requirements. Given that SOA was developed in order to provide enterprises with modular, reusable and adaptable architectures, but that security was the principal factor that hindered its use, we believe that our process can act as an enabler for service-oriented applications.
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Date Issued: 2008
PURL: http://purl.flvc.org/FAU/58003
Subject Headings: Computer network architectures, Web servers, Management, Software engineering, Expert systems (Computer science)
Format: Document (PDF)

Title: Patterns for secure interactions in social networks in Web 2.0.
Creator: Marin, Carolina, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: A social network is a structure of individuals and organizations, which are connected by one or more types of interdependency, such as friendship, affinity, common interests or knowledge. Social networks use Web 2.0 technology, which is mostly based on a service-oriented architecture. We are studying patterns for social networks in this environment. A pattern is an encapsulated solution to a software problem in a given context, secure threats are possible in this context. We present a...
Show moreA social network is a structure of individuals and organizations, which are connected by one or more types of interdependency, such as friendship, affinity, common interests or knowledge. Social networks use Web 2.0 technology, which is mostly based on a service-oriented architecture. We are studying patterns for social networks in this environment. A pattern is an encapsulated solution to a software problem in a given context, secure threats are possible in this context. We present a collection of patterns associated with the most important aspects of social networks, with emphasis on controlling the actions of the users of these networks.
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Date Issued: 2012
PURL: http://purl.flvc.org/FAU/3342203
Subject Headings: Web 2.0, Computer network architectures, Online social networks, Security measures, Social media, Pattern recognition systems
Format: Document (PDF)

Title: Patterns for web services standards.
Creator: Ajaj, Ola, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Web services intend to provide an application integration technology that can be successfully used over the Internet in a secure, interoperable and trusted manner. Policies are high-level guidelines defining the way an institution conducts its activities. The WS-Policy standard describes how to apply policies of security definition, enforcement of access control, authentication and logging. WS-Trust defines a security token service and a trust engine which are used by web services to...
Show moreWeb services intend to provide an application integration technology that can be successfully used over the Internet in a secure, interoperable and trusted manner. Policies are high-level guidelines defining the way an institution conducts its activities. The WS-Policy standard describes how to apply policies of security definition, enforcement of access control, authentication and logging. WS-Trust defines a security token service and a trust engine which are used by web services to authenticate other web services. Using the functions defined in WS-Trust, applications can engage in secure communication after establishing trust. BPEL is a language for web service composition that intends to provide convenient and effective means for application integration over the Internet. We address security considerations in BPEL and how to enforce them, as well as its interactions with other web services standards such as WS-Security and WS-Policy.
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Date Issued: 2010
PURL: http://purl.flvc.org/FAU/1927300
Subject Headings: Computational grids (Computer systems), Computer systems, Verification, Expert systems (Computer science), Computer network architectures, Web servers, Management, Electronic commerce, Computer programs
Format: Document (PDF)

Title: Progress towards push button verification for business process execution language artifacts.
Creator: Vargas, Augusto., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Web Service Business Process Execution Language (BPEL) has become a standard language in the world of Service Oriented Architecture (SOA) for specifying interactions between internet services. This standard frees developers from low-level concerns involving platform, implementation, and versioning. These freedoms risk development of less robust artifacts that may even become part of a mission-critical system. Model checking a BPEL artifact for correctness with respect to temporal logic...
Show moreWeb Service Business Process Execution Language (BPEL) has become a standard language in the world of Service Oriented Architecture (SOA) for specifying interactions between internet services. This standard frees developers from low-level concerns involving platform, implementation, and versioning. These freedoms risk development of less robust artifacts that may even become part of a mission-critical system. Model checking a BPEL artifact for correctness with respect to temporal logic properties is computationally complex, since it requires enumerating all communication and synchronization amongst various services with itself. This entails modeling BPEL features such as concurrency, hierarchy, interleaving, and non-deterministic choice. The thesis will provide rules and procedures for translating these features to a veriable model written in Promela. We will use these rules to build a program which automates the translation process, bringing us one step closer to push button verification. Finally, two BPEL artifacts will be translated, manually edited, verified, and analyzed.
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Date Issued: 2009
PURL: http://purl.flvc.org/FAU/369386
Subject Headings: Electronic commerce, Computer programs, Computer network architectures, Expert systems (Computer science), Web servers, Management, Computer systems, Verification
Format: Document (PDF)

Title: Quorum based IP autoconfiguration in mobile ad hoc networks.
Creator: Xu, Tinghui., Florida Atlantic University, Wu, Jie, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: IP address autoconfiguration poses a challenge for mobile ad-hoc networks (MANETs) because it has to be done to ensure correct routing. An IP autoconfiguration protocol that is based on quorum voting is proposed. Nodes are distributed configured when a write quorum can be collected. Making the compromise between message overhead and data consistency, quorum voting enforces data consistency by ensuring fresh read on every access so that each node is configured with a unique IP address. The...
Show moreIP address autoconfiguration poses a challenge for mobile ad-hoc networks (MANETs) because it has to be done to ensure correct routing. An IP autoconfiguration protocol that is based on quorum voting is proposed. Nodes are distributed configured when a write quorum can be collected. Making the compromise between message overhead and data consistency, quorum voting enforces data consistency by ensuring fresh read on every access so that each node is configured with a unique IP address. The protocol is scalable since the configuration information is maintained locally and no central server is involved. Extensive experiments are carried out comparing the configuration latency, message overhead and address reclamation cost between our protocol and existing stateful protocols. The simulation results show that nodes are configured in lower latency and the message overhead for maintaining the network is fairly low. Moreover, the proposed protocol greatly enhances the address availability by keeping proper redundancy.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13362
Subject Headings: TCP/IP (Computer network protocol), Computer network architectures, Mobile communication systems, Wireless communication systems
Format: Document (PDF)

Title: An uncertainty-aware reputation system in mobile networks: analysis and applications.
Creator: Li, Feng., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Many emerging mobile networks aim to provide wireless network services without relying on any infrastructure. The main challenge in these networks comes from their self-organized and distributed nature. There is an inherent reliance on collaboration among the participants in order to achieve the aimed functionalities. Therefore, establishing and quantifying trust, which is the driving force for collaboration, is important for applications in mobile networks. This dissertation focuses on...
Show moreMany emerging mobile networks aim to provide wireless network services without relying on any infrastructure. The main challenge in these networks comes from their self-organized and distributed nature. There is an inherent reliance on collaboration among the participants in order to achieve the aimed functionalities. Therefore, establishing and quantifying trust, which is the driving force for collaboration, is important for applications in mobile networks. This dissertation focuses on evaluating and quantifying trust to stimulate collaboration in mobile networks, introducing uncertainty concepts and metrics, as well as providing the various analysis and applications of uncertainty-aware reputation systems. Many existing reputation systems sharply divide the trust value into right or wrong, thus ignoring another core dimension of trust: uncertainty. As uncertainty deeply impacts a node's anticipation of others' behavior and decisions during interaction, we include it in the reputation system. Specifically, we use an uncertainty metric to directly reflect a node's confidence in the sufficiency of its past experience, and study how the collection of trust information may affect uncertainty in nodes' opinions. Higher uncertainty leads to higher transaction cost and reduced acceptance of communication. We exploit mobility to efficiently reduce uncertainty and to speed up trust convergence. We also apply the new reputation system to enhance the analysis of the interactions among mobile nodes, and present three sample uncertainty-aware applications. We integrate the uncertainty-aware reputation model with game theory tools, and enhance the analysis on interactions among mobile nodes., Instead of reactively protecting the mobile networks from existing attacks as in the traditional security paradigms, the analysis in this dissertation gives more insights on nodes' rationality in the interaction, which will enable the mechanism design in mobile networks to be security and incentive compatible. Moreover, we present three sample applications, in which we clearly identify the challenges, specifically formalize the problems, and cleverly employ the uncertainty mitigation schemes. These applications show that the uncertainty definition and mitigation schemes can benefit a broad range of applications, including fields such as security, network services, and routing.
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Date Issued: 2009
PURL: http://purl.flvc.org/FAU/210520
Subject Headings: Wireless communication systems, Security measures, Wireless communication systems, Technological innovations, Computer network architectures, Mobile computing, Ad hoc networks (Computer networks), Security measures
Format: Document (PDF)

Title: Unifying the conceptual levels of network security through the use of patterns.
Creator: Kumar, Ajoy, Fernandez, Eduardo B., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Network architectures are described by the International Standard for Organization (ISO), which contains seven layers. The internet uses four of these layers, of which three are of interest to us. These layers are Internet Protocol (IP) or Network Layer, Transport Layer and Application Layer. We need to protect against attacks that may come through any of these layers. In the world of network security, systems are plagued by various attacks, internal and external, and could result in Denial...
Show moreNetwork architectures are described by the International Standard for Organization (ISO), which contains seven layers. The internet uses four of these layers, of which three are of interest to us. These layers are Internet Protocol (IP) or Network Layer, Transport Layer and Application Layer. We need to protect against attacks that may come through any of these layers. In the world of network security, systems are plagued by various attacks, internal and external, and could result in Denial of Service (DoS) and/or other damaging effects. Such attacks and loss of service can be devastating for the users of the system. The implementation of security devices such as Firewalls and Intrusion Detection Systems (IDS), the protection of network traffic with Virtual Private Networks (VPNs), and the use of secure protocols for the layers are important to enhance the security at each of these layers.We have done a survey of the existing network security patterns and we have written the missing patterns. We have developed security patterns for abstract IDS, Behavior–based IDS and Rule-based IDS and as well as for Internet Protocol Security (IPSec) and Transport Layer Security (TLS) protocols. We have also identified the need for a VPN pattern and have developed security patterns for abstract VPN, an IPSec VPN and a TLS VPN. We also evaluated these patterns with respect to some aspects to simplify their application by system designers. We have tried to unify the security of the network layers using security patterns by tying in security patterns for network transmission, network protocols and network boundary devices.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004132, http://purl.flvc.org/fau/fd/FA00004132
Subject Headings: Computer architecture, Computer network architectures, Computer network protocols, Computer network protocols, Computer networks -- Security measures, Expert systems (Computer science)
Format: Document (PDF)

Title: Web services cryptographic patterns.
Creator: Hashizume, Keiko., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Data security has been identified as one of the most important concerns where sensitive messages are exchanged over the network. In web service architecture, multiple distributed applications communicate with each other over the network by sending XML messages. How can we protect these sensitive messages? Some web services standards have emerged to tackle this problem. The XML Encryption standard defines the process of encrypting and decrypting all of an XML message, part of an XML message,...
Show moreData security has been identified as one of the most important concerns where sensitive messages are exchanged over the network. In web service architecture, multiple distributed applications communicate with each other over the network by sending XML messages. How can we protect these sensitive messages? Some web services standards have emerged to tackle this problem. The XML Encryption standard defines the process of encrypting and decrypting all of an XML message, part of an XML message, or even an external resource. Like XML Encryption, the XML Signature standard specifies how to digitally sign an entire XML message, part of an XML message, or an external object. WS-Security defines how to embed security tokens, XML encryption, and XML signature into XML documents. It does not define new security mechanisms, but leverages existing security technologies such as encryption and digital signature.
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Date Issued: 2009
PURL: http://purl.flvc.org/FAU/216413
Subject Headings: Computer networks, Access control, Data encryption (Computer science), XML (Document markup language), Digital signatures, Computer network architectures
Format: Document (PDF)

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