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Design and security of small wireless network
Žižka, Ladislav ; Pinkas, Otakar (advisor) ; Šmejkal, Ivo (referee)
This thesis deals with design and security of small wireless network. Main goal of the thesis is home network design and choice of optimal solution of wireless security. The thesis has four parts. The first part describes computer networks and network components in theory. Next part deals with network design, choosing of network components and setting of them. It also describes some functionalities of alternative firmware DD-WRT. The third part presents common wireless security and network analyzing software. In the last part there are proved some types of attacks against Wi-Fi networks with Aircrack-ng suite.
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Wireless Security Audit
VRÁTNÝ, Jan
This bachelor thesis deals with security problems of wireless networks, also known as Wi-Fi. The purpose of the thesis is to explain the concept of Wi-Fi network, from what components it is composed, introduce safety devices used in wireless networks, and perform a research in a selected city in a specific location with the largest concentration of people if the wireless networks are secured and if they are what type of security is used. In a domestic environment an illustrative attack will be made on a Wi-Fi network secured by 128-bit WEP key. Also I will describe a new security bug that was discovered at the WPS function. Furthermore, this bachelor thesis will focus in detail on a local business, which in addition to conventional LAN extensively uses Wi-Fi network. An analysis of the security of the Wi-Fi network will be performed and the results will be evaluated to show the economic impact on the company if it were to be subjected to an attack in which sensitive data are leaked.
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Design of nrmetwork infrastructure, ICT and application platfo for a small company.
Hurych, Tomáš ; Palovský, Radomír (advisor) ; Pinkas, Otakar (referee)
This bachelor work deals with the design of a network infrastructure for a small company. Designing a network infrastructure consists of a link between two workplaces using a wireless connection and a realization of active and passive elements on both places of work. The thesis further looks into a design and realization of an application server in the MS Windows Server environment and a data storage running on a Linux kernel. That was achieved by the analysis of possible solutions of customer requirements, selection and putting the best of them into practice. The main contribution of this work is the design of a secure, functional and an affordable solution for a small company. The work is divided into three logical aggregates. At first it analyzes the current situation of the company and the specification of its requirements. It also discusses theoretical solutions for given requirements and last but not least it includes a suggestion for their solution.
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Building and using of small computer network
Sládek, Jiří ; Pinkas, Otakar (advisor) ; Palovský, Radomír (referee)
This text disserts on technological standards used in small local company networks and on these technologies itselfs. It focuses on basic network technologies, services built on TCP/IP network protocol, wired networks, wireless networks and active network components. Practical part is concerned with mapping and describing specific local network, testing of its functionality and satisfying users' original requirements. Results of this part will be used in network documentation.
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Building and using computer network at NAREX Bystřice, s.r.o.
Babický, Lukáš ; Pinkas, Otakar (advisor) ; Kristen, Miloš (referee)
This bachelor's thesis deals with the operation of a small business network in firm Narex Bystřice, s.r.o. The main objective of the thesis is to present the current state of the network, highlight its errors and suggest corrective actions. The first part of the thesis considers the aspects that are needed for understanding the work of a computer network as a generic unit. There are discribed individual components, technologies, software topology and network security that are needed for the work of a computer network. In the practise part I describe its current state, highlight its deficiencies and suggest their corrections. Depending on the highlighted errors, individual solutions are suggested. The proposed solutions are presented to the company management. As subsequently agreed, the solutions are either implemented or cancelled.
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Usage of packet wireless network analyzer Wireshark
SIROVÝ, Ladislav
This paper contains information about performing computer network analysis using Wireshark application and about wireless network security in general. This involves practical testing of various security models and measuring wireless security coverage in specific areas. The general overview of the most widely used open-source network analyzers and their comparsion is also included.
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Problem of security wifi nets
PŘITASIL, Miroslav
This diploma thesis describes the secure wireless data transfer mediated by various technologies. A special attention is given to standards 802.11x, different kinds of technologies protection originating of the standards and to possible attacts targeted against them. Moreover, it deals with the problems related to password and sensitive data protection which are important to the network administration. The thesis gives also some examples of particular network type securing.
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Setting Up And Securing Enterprise Wireless Network
Balon, Lukáš ; Palovský, Radomír (advisor) ; Pavlíček, Luboš (referee)
The topic of this bachelor's thesis is to set compact view on the issues of the wireless networks, their settings and proper security in corporate environment. Wireless networks are supposed to simplify access to the internet and business data, but especially in this area, it is necessary to put forth above standard care to security policy, to protect network from external attacks. First part of this work is focused on theoretical background of the Wi-fi, basic functioning principles, history and step-by-step development of technology. Explains differences between particular standards, defines basic parameters of Wi-fi devices. Next part is focused on network security. It explains encryption methods and procedures and describes differences between ciphers. This section also deals with other possibilities, how to solve security questions. Third section deals with installation of wireless components, their proper configuration and other settings. From this text emerges, how simple to buy and how available are wireless components today. Last part id formed by series of experimental hacks into secured network, shows how simple it is to decrypt some ciphers. It proofs which ways of network security are best to use in enterprise environment.
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Design of Wireless Network for Colleges of University of Economics
Kališ, Martin ; Pavlíček, Luboš (advisor) ; Petera, Jan (referee)
Tato bakalářská práce se zabývá návrhem síťové infrastruktury. Cílem práce je zpracování detailního návrhu pro vybudování bezdrátové sítě na kolejích Vysoké školy ekonomické. Práce se skládá ze čtyř částí. V první části jsou vysvětleny základní pojmy a technologie, které se používají při nasazení bezdrátové sítě do provozu. Jejich znalost je nutná pro porozumění dalším částem práce. Druhá část se zabývá návrhem síťové infrastruktury. Část třetí představuje případovou studii implementace bezdrátové sítě na půdě Všeobecné fakultní nemocnice v Praze. Ve čtvrté části je vytvořeno několik možností řešení bezdrátové sítě pro koleje Vysoké školy ekonomické v Praze.
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