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GPON Frame Detection System
Holík, Martin ; Münster, Petr (referee) ; Horváth, Tomáš (advisor)
This diploma thesis deals with GPON frame detection system. Partial problems of designing databases, optical networks and management of database system are described in theoretical parts. Practical parts this thesis are focused on design of system for detecting GPON frames and script for analysing of traffic.
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Design and development of modern websites
Zámečník, Ondřej ; Horváth, Tomáš (referee) ; Münster, Petr (advisor)
This bachelor thesis is focused on the design and preparation of an Internet presentation for the laboratory group called Optolab. The current form of the site is completely reconstructed using modern technologies, with regard to accessibility rules and compliance with web standards. The main task of the thesis is besides the complete graphic design also the implementation of the internal section for content management, communication and sharing of content among users.
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Quantum key distribution over optical fibre infrastructure
Klíčník, Ondřej ; Horváth, Tomáš (referee) ; Münster, Petr (advisor)
The aim of this bachelor thesis is to create a comprehensive view of the current technology of quantum key distribution (QKD) over optical fiber, in theoretical terms, a completely secure key exchange. The thesis can be divided into theoretical and practical parts. The theoretical part illuminates the reasons for the use of these systems and the fundamentals of quantum mechanics needed to understand the function of individual QKD protocols. Furthermore, the principles of operation of both the protocols and related services such as post-quantum cryptography (PQC) and quantum number generation (QRNG) are described. The last chapter is devoted to the architecture of QKD networks and describes current standards for QKD communications. In the practical part, a detailed analysis of commercially available devices is performed. Subsequently, simulation results of selected QKD protocols are presented and a custom QKD polygon is designed, built and tested.
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Advanced FTP Server
Matoušek, Jan ; Urban, František (referee) ; Horváth, Tomáš (advisor)
This bachelor thesis deals with the FTP protocol and its possibilities to verify CRC checksums, to sort multimedia data by authors, genres, years and to create transmission statistics. These options were shown on FTP server GlFTPd. A PZS-NG plugin has been installed in GlFTPd for further setup. An IRC bot Eggdrop has also been installed. It allows the displaying of the information about the uploaded files and the server information to an IRC channel when using the ngBot script from PZS-NG. GlFTPd has been installed on a physical machine with a Debian Linux distribution.
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Network Traffic Monitoring using Long Working Analyser
Gilík, Aleš ; Horváth, Tomáš (referee) ; Oujezský, Václav (advisor)
This diploma thesis is focused on network monitoring. The theoretical part describes using of detection and prevention systems, properties of these systems, their components and detection techniques. Next part of the thesis is focused on EndaceProbe analyzer and analytic application EndaceVision. Also web services, programming language WSDL and protocol SOAP are described. The practical part is focused on creating three laboratory exercises for network monitoring and for using EndaceProbe. Components of the exercises are the traffic generator IXIA and Cisco switches with the application of remote switched port analyzer. There are also used web services EndaceProbe, programming language WSDL and SOAP protocol.
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General Security of the Internet of Things
Páleník, Luděk ; Horváth, Tomáš (referee) ; Oujezský, Václav (advisor)
The thesis "General Security of the Internet of Things" deals with the analysis of networks with low power consumption in the theoretical part -- especially LoRaWAN networks. Further, the thesis deals with the general security of the Internet of things and the security risks of LoRaWAN networks. The practical part is focused on building the LoRaWAN gateway, which is realized with the Raspberry Pi platform with the iC880A-SPI extension module. The gateway is put into operation with full settings, assignment to the network server. Sensors configuration, creation an application, and assign it to the application server. In the practical part, a replay attack on LoRaWAN technology, which demonstrates the vulnerability of this technology, is realized.
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Optical fiber polygon for testing of services
Frolka, Jan ; Horváth, Tomáš (referee) ; Dejdar, Petr (advisor)
Bachelor’s thesis describes the types of optical fibers, their structures and properties. The basic parameters of optical fibers and standards for single-mode fibers are defined. The differences between the various connectors and the polishing of the ferrules are also described. The next section describes the multichannel transmission technology and its modifications, as well as the FFTx technology. In the next part, the work deals with measurements on optical fibers, the most common measurement methods are listed. The reader will learn what to do and also what not to do when manipulating with optical elements. The attached diagrams show the test polygon, as well as the measured and calculated values of the attenuation of its parts.
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Simulation of high-speed optical data transmissions
Chaloupka, Tomáš ; Münster, Petr (referee) ; Horváth, Tomáš (advisor)
The aim of this master thesis is comparation of simulation tools OptSim™ and PHOTOSS which are used to create simulations of data traffi cs in access and metropolitan networks. The outcome of this thesis is three laboratory exercises and their theoretical bases which should explain the way of working in diff erent simulation environments to students.
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Software defined networks
Denisov, Artem ; Horváth, Tomáš (referee) ; Tomašov, Adrián (advisor)
The content of this work is a description of the ONOS controller for software defined networks (SDN) and the design of laboratory tasks to demonstrate the activities of the controller. Part of the work is also a description of the basic technologies on which the operation of SDN mechanisms and the use of VxLAN technology in these networks is based. Next, the described principles will be tested in terms of network infrastructure virtualization.
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