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PBX Security and Forensics begins with an introduction to PBXs (Private Branch Exchanges) and the scene, statistics and involved actors. This book discusses confidentiality, integrity and availability threats in PBXs. The author examines the threats and the technical background as well as security and Forensics involving PBXs. The purpose of this book is to raise user awareness in regards to security and privacy threats present in PBXs, helping both users and administrators safeguard their systems.

Computer security -- Management -- Handbooks, manuals, etc. --- Computer security. --- Data protection -- Handbooks, manuals, etc. --- Telephone --- Telecommunication systems --- Electronic apparatus and appliances --- Electrical & Computer Engineering --- Engineering & Applied Sciences --- Electrical Engineering --- Private branch exchanges --- Security measures --- Telephone switching systems, Electronic. --- Electronic switching systems (Telephone) --- Telephone service --- Telephones --- Security measures. --- Engineering. --- Forensic science. --- System safety. --- Electrical engineering. --- Communications Engineering, Networks. --- Systems and Data Security. --- Security Science and Technology. --- Forensic Science. --- Electronic systems --- Switching circuits --- Switching theory --- Telephone, Automatic --- Telephone stations --- Telephone systems --- Communication and traffic --- Speech processing systems --- Telecommunication --- Telecommunication. --- Forensic medicine. --- Forensic medicine --- Injuries (Law) --- Jurisprudence, Medical --- Legal medicine --- Forensic sciences --- Medicine --- Medical laws and legislation --- Computer privacy --- Computer system security --- Computer systems --- Computers --- Cyber security --- Cybersecurity --- Electronic digital computers --- Protection of computer systems --- Security of computer systems --- Data protection --- Security systems --- Hacking --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Telecommunications --- Communication --- Information theory --- Telecommuting --- Protection --- Criminalistics --- Forensic science --- Science --- Criminal investigation --- Safety, System --- Safety of systems --- Systems safety --- Accidents --- Industrial safety --- Systems engineering --- Electric engineering --- Engineering --- Prevention

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This book constitutes the refereed proceedings of the International Conference on Modern Probabilistic Methods for Analysis of Telecommunication Networks, Belarusian Winter Workshop in Queueing Theory, BWWQT 2013, held in Minsk, Belarus, in January 2013. The 23 revised full papers presented were carefully reviewed and selected from numerous submissions. The papers present new results in study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theories of queueing systems and queueing networks.

Mathematics --- Physical Sciences & Mathematics --- Mathematical Statistics --- Queuing networks (Data transmission) --- Telecommunication --- Switching systems --- Queueing networks (Data transmission) --- Computer science. --- Computer communication systems. --- Computer system failures. --- Mathematical statistics. --- Computer Science. --- Probability and Statistics in Computer Science. --- Computer Communication Networks. --- System Performance and Evaluation. --- Statistical inference --- Statistics, Mathematical --- Statistics --- Probabilities --- Sampling (Statistics) --- Computer failures --- Computer malfunctions --- Computer systems --- Failure of computer systems --- System failures (Engineering) --- Fault-tolerant computing --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Informatics --- Science --- Statistical methods --- Failures --- Distributed processing --- Queuing theory --- Simulation methods --- Computer system performance.

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Congestion Control in Data Transmission Networks details the modeling and control of data traffic in communication networks. It shows how various networking phenomena can be represented in a consistent mathematical framework suitable for rigorous formal analysis. The monograph differentiates between fluid-flow continuous-time traffic models, discrete-time processes with constant sampling rates, and sampled-data systems with variable discretization periods. The authors address a number of difficult real-life problems, such as: • optimal control of flows with disparate, time-varying delay; • the existence of source and channel nonlinearities; • the balancing of quality of service and fairness requirements; and • the incorporation of variable rate allocation policies. Appropriate control mechanisms which can handle congestion and guarantee high throughput in various traffic scenarios (with different networking phenomena being considered) are proposed. Systematic design procedures using sound control-theoretic foundations are adopted. Since robustness issues are of major concern in providing efficient data-flow regulation in today’s networks, sliding-mode control is selected as the principal technique to be applied in creating the control solutions. The controller derivation is given extensive analytical treatment and is supported with numerous realistic simulations. A comparison with existing solutions is also provided. The concepts applied are discussed in a number of illustrative examples, and supported by many figures, tables, and graphs walking the reader through the ideas and introducing their relevance in real networks.

Data flow computing. --- Data transmission systems -- Automatic control. --- Engineering. --- Routing (Computer network management). --- Routing (Computer network management) --- Data transmission systems --- Data flow computing --- Mechanical Engineering --- Electrical & Computer Engineering --- Engineering & Applied Sciences --- Mechanical Engineering - General --- Telecommunications --- Automatic control --- Sliding mode control. --- Packet switching (Data transmission) --- Computer networks. --- Switching, Packet (Data transmission) --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Computer communication systems. --- Calculus of variations. --- Control engineering. --- Electrical engineering. --- Control. --- Computer Communication Networks. --- Communications Engineering, Networks. --- Calculus of Variations and Optimal Control; Optimization. --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Distributed processing --- Switching systems --- Telecommunication. --- Mathematical optimization. --- Control and Systems Theory. --- Optimization (Mathematics) --- Optimization techniques --- Optimization theory --- Systems optimization --- Mathematical analysis --- Maxima and minima --- Operations research --- Simulation methods --- System analysis --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Communication --- Information theory --- Telecommuting --- Control engineering --- Control equipment --- Control theory --- Engineering instruments --- Automation --- Programmable controllers --- Isoperimetrical problems --- Variations, Calculus of --- Electric engineering --- Engineering