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Wireless Fidelity Networks
Gajdoš, Jan ; Ing.Lukáš Černý (referee) ; Koch, Miloš (advisor)
This work deals with main problems of wireless fidelity networks. In details it’s showing the terminology, used technical standards, network’s architecture and built-in security of wireless fidelity networks. For the question of the network’s security it’s handled regarding to VPN (Virtual Private Network) technology. Based on these theoretical assumptions there is new company’s network designed. This designed network offers combination of free wireless network with internet access and secured access to the private’s corporate LAN using VPN technology. Main aspect is to keep maximum available security, low costs and possibility to realize this design for already existing historical object.
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Project documentation for the design of data networks
Gajdošík, Ivo ; Mišurec, Jiří (referee) ; Mrákava, Petr (advisor)
This Master’s thesis deals with project of blueprints for installation of data cabling in specific building following regulations. Theoretical part describes basic overview of used regulations and principles of data networks with focus on Ethernet and Wi-Fi standards. Separated chapters cover passive layer of data networks and computer-aided-design. Practical part contains implementational and architectural drawing of data network project in multipurpose building. According to these plans the project could be realized.
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Increasing the efficiency of the handover in real network environment
Michalec, Richard ; Sobotka, Jiří (referee) ; Vajsar, Pavel (advisor)
The aim of this work is to study methods of handover used in WiMAX and WLAN networks, next suggest the posibility of simulation methods for WLAN handover in the simulation environment OPNET Modeler. This work is focused primarily on obtaining the information about neighboring AP and subsequent selection of a new AP using such information. The work describes in detail each processes solutions that are used to implement newscanning methods
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Wireless Network
Pech, Martin ; Neuwirth, Bernard (referee) ; Koch, Miloš (advisor)
This bachelor's thesis deals with wireless networks and related issue. It includes an overview of basic terminology commonly connected with Wi-Fi technology. Moreover, it includes a network implementation design, which offers a freely accessible Wi-Fi network with an available Internet connection as well as a secured connection of a newly introduced restaurant till system. The design takes into consideration a limited budget and the need to ensure sufficient security.
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Wireless Fidelity Networks
Řezníček, Milan ; Taft, Karel (referee) ; Koch, Miloš (advisor)
In this bachelor´s thesis I deal with the problems of wi-fi networks, concretely their security. The results of surveying are mentioned in the practical part of my work, in which I wanted to find out if at least 50% of wi-fi networks in several cities of Břeclav region are secured by WEP or WPA. Proposals how to improve wireless network security by some types of networks are mentioned in conclusion of my thesis.
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Modern trends in Wi-Fi IEEE 802.11 networks security
Lieskovan, Tomáš ; Škorpil, Vladislav (referee) ; Endrle, Pavel (advisor)
This work treats the matters of wireless networks, Wi-Fi. The paper describes the various principles of coding, such as WEP, WPA and WPA2. At first the WEP security method is analyzed with the view of the fact that it doesn´t meet contemporary safety requirements, further its successor WPA, namely TKIP and AES authentication methods, and last but not least WPA2 which nowadays serve as a safety standard. The work assesses the safety risks of individual security methods and makes several recommendations to achieve maximum security for wireless networks. In the work a commercially available hardware and for free dissemination available software (Open Source) are used.
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Miniature antennas for mobile communications
Kounek, Milan ; Láčík, Jaroslav (referee) ; Pokorný, Michal (advisor)
This bachelor thesis deals with downsizing techniques of planar antennas, while keeping important parameter for usage in mobile communications. In software IE3D there was designed antenna, working in ISM 2,4GHz band, which was downsized by methods described in this thesis. A group of antennas was created, 2 antennas were chosen, produced and measured. Results of measuring were compared with simulation and differences were evaluated.
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Laboratory exercises for network technologies education
Kapusta, Martin ; Langhammer, Lukáš (referee) ; Dvořák, Jan (advisor)
The aim of the diploma thesis is to choose network simulator suitable for network technologies laboratory tasks for educational use. Theoretical part of thesis describes basics of network communication, addressing, reference models. Thesis also describes standards Wi Fi, Ethernet and routing protocol OSPF - technologies which are discussed in laboratory tasks. The practical part of diploma thesis describes a few available network simulators suitable for creating two laboratory tasks. Finally, the NS-3 simulator was chosen. Both laboratory tasks include theoretical introduction, detailed description of source code, individual tasks, expected outputs and control questions which senses understanding of discussed technologies.
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IoT Control Module
Haman, Martin ; Marcoň, Petr (referee) ; Szabó, Zoltán (advisor)
This bachelor thesis deals with the research of the possibilities of wireless data transmission from the controllers IoT modules and their construction. At first there is compared wireless technologies, network protocols, their suitability depending on the application of the IoT control module. Then it is designed the IoT control module using a Wi-Fi module (based on Espressif ESP8266 integrated circuit) communicating over a MQTT network protocol. Thesis continue with selection, compilation of the firmware, creation of script for control heating system, descriptions of methods for controlling the IoT control module and display of measured data. The possibilities of creating a MQTT broker and security of data transmission are described below. In conclusion is documented and verified its functionality.
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Weather station
Rimeg, Martin ; Číž, Radim (referee) ; Lattenberg, Ivo (advisor)
This work deals with the development of a meteorological station for measuring temperature, atmospheric pressure, humidity and light intensity. The main feature of the device is the ESP 8266 module, which records the measured values and sends information to the server. Part of the work is PCB design, selection of suitable sensors and application development for display of measured values. The description of the solution was preceded by the theoretical processing of development topics.
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