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Security protection techniques of wireless networks of internet providers
Žiško, Róbert ; Pelka, Tomáš (referee) ; Burda, Karel (advisor)
This master’s thesis can be used as the guidebook for Wi-Fi networks provider in non-licensed zones 2,4GHz and 5GHz. It is good tool to understand wireless technology area and its protection. Reader can follow network design and avoid mistakes that are mentioned in work. This text shouldn’t be a tool or a guide for possible attackers, but an impulse for small providers who provide their networks in unsecured form. In the opening chapter of my work, matters of Wi-Fi networks are thoroughly analyzed. As they are able to get internet connection in a lot of inaccessible places, they are considered to be crucial for the present times. The basic procedure describing Wi-Fi planning is written in thesis and also its legislative that has to be strictly observed. The big disadvantage is riskiness of the wireless connection that allows attackers to attack network in many ways. For mentioned reason it is very important to take utmost account of Wi-Fi network’s security and attack resistance. Unfortunately a lot of networks are either secured partially or unsecured at all. These types of networks are frequently attacked in order to get “free” Internet access or because of competitors fight. In the text below we can find possible Wi-Fi attack forms using by attackers to get Internet access or destroy network hardware what can cause big financial loss to providers. I described design and realization of little-town network using safety tools implementation based on my experience. For that purpose I implemented benchmark tests in graphics as well as practical format.
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Payment card systems
Flégl, Jan ; Pelka, Tomáš (referee) ; Morský, Ondřej (advisor)
The work is about payment card systems. We’d like to describe infrastructure of credit cards, ATMs, POS terminals , focusing on the EMV standard. In theoretical part we will be introduced with the history and development of credit cards, ATMs and POS terminals. Then we focus on a detailed description of payments terminals and possibilities of payment via the Internet. The most extensive theoretical part deals width EMV standard. In practical part we will make our own program, which authenticates the user based on his credit card and it will allow the user to login in the system. Source codes of this application can be found on enclosed CD.
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Software design support of burglar alarm system
Vymazal, Michal ; Pelka, Tomáš (referee) ; Burda, Karel (advisor)
This thesis deals with implementation of software support of alarm system design for security levels 1 and 2 based on web technologies. It was created intuitive and interactive graphical interface that allows to create high-quality alarm system design even for laymen. First of all the paper deals with standards and jurisdictions in the Czech Republic, according to which the alarm system design must be followed. In theoretical part there are described in detail characteristics of alarm systems and its components, proper functioning principles, installation principle, advantages and disadvantages of use, individual steps of alarm system design and proposed methodology of alarm system design for security level 1 and 2. In practical part there are described the technologies used for the implementation of this paper, structure of created webpage and detailed steps of alarm system design, as seen by user during creating. The result of this paper is a webpage, which is divided into two parts: theoretical and practical. The theoretical part provides information about the alarm system architecture, alarm system design and established methodology for the alarm system design for security level 1 and 2. In the practical part the user, on the basis of gained information and interactive help, can create high-quality alarm system design that meets all the conditions for reliable function in real traffic.
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SAN data storage
Pružinský, Ján ; Pelka, Tomáš (referee) ; Pust, Radim (advisor)
The main goal of this project is a familiarization with the protocol iSCSI and with its implementation into the SAN network. Firstly, the focus is aimed towards a theoretical analysis of the SAN data storage, description of its individual parts as well as its realization within the network. In the second part, the description of the protocol iSCI includes an explanation of particular abbreviations and terms. Every possibility of securing this protocol is fully processed and, moreover, the implementation in OS Linux and OS MS Windows Server is deeply explained. The practical part is devoted to configuring iSCSI Target in OS Linux and configuring iSCSI Initiator in OS linux and OS Windows. The last part is devoted to creating a Web interface to control the iSCSI Target.
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Visualization of connections between computers
Kovář, Jan ; Pelka, Tomáš (referee) ; Komosný, Dan (advisor)
Project Multicast IPTV Research Group mainly deals with the proposing of new mathematical models and communication protocols within IPTV technology. This technology is associated with VOD (Video on demand) and internet services such as web pages or VoIP (Voice over Internet Protocol). This bachelor thesis is focused on IPTV theory, history and achitecture. Analyse multicast, its attributes, routing and protocols used to broadcasting. Subtilize posibility of graphics formats for visualization, their advantages and disadvantages. Final objective of this project, which is solved on Multicast IPTV Research Group project, is application, which analyse input data generated by hierarchy summarization. By virtue of graphviz are generated output data in svg format. It is easy to view this svg files in later types of internet browsers.
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Server clustering techniques
Čech, Martin ; Polívka, Michal (referee) ; Pelka, Tomáš (advisor)
The work is given an analysis of Open Source Software (further referred as OSS), which allows use and create computer clusters. It explored the issue of clustering and construction of clusters. All installations, configuration and cluster management have been done on the operating system GNU / Linux. Presented OSS makes possible to compile a storage cluster, cluster with load distribution, cluster with high availability and computing cluster. Different types of benchmarks was theoretically analyzed, and practically used for measuring cluster’s performance. Results were compared with others, eg. the TOP500 list of the best clusters available online. Practical part of the work deals with comparing performance computing clusters. With several tens of computational nodes has been established cluster, where was installed package OpenMPI, which allows parallelization of calculations. Subsequently, tests were performed with the High Performance Linpack, which by calculation of linear equations provides total performance. Influence of the parallelization to algorithm PEA was also tested. To present practical usability, cluster has been tested by program John the Ripper, which serves to cracking users passwords. The work shall include the quantity of graphs clarifying the function and mainly showing the achieved results.
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Virtualization for the x86 platform
Müller, Pavel ; Kyselý, František (referee) ; Pelka, Tomáš (advisor)
A thesis describes a virtualization of x86 platform. In the first part the virtualization, its utilization and specific types of virtualization are described in a general way. The specific types of virtualization are full virtualization, paravirtualization, virtualization on core level, hardware virtualization and application virtualization. There is also described a general function of virtual machine, reasons of virtualization implementing, current development, focusing on future development and virtualization security. In the second part the thesis tries to find a solution with establishment charges of virtualization. To test purposes the following software programs were used. The first one is freeware benchmark Sandra from SiSoft company and second one is a software created on the basis of the thesis. For the tests the CPU overhead both an arithmetic-logical unit and a unit for work with numbers and floating decimal point, a RAM data transmission efficiency and a hard disk logging rate were chosen. The following test machines were described: VMWare, VirtualBox and Xen. In the third and the last part of the thesis is a description of network interface virtualization methods with a utilization of tun and tap system. In each particular step a virtual network interface creation and implementation are presented. Model situations of communication among virtual and physical machines with usage of these devices are described at the end of the thesis.
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Secured access for web applications
Humpolík, Jan ; Pelka, Tomáš (referee) ; Doležel, Radek (advisor)
This thesis mainly concerns often neglected security part of each web application, but also secure access users themselves. Describes theoretically and practically modern security technology, on a web application being tested and shows a possible way of defense. Gives instructions for installing its own web server.
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Wireless Communication in Fire Sport
Pelka, Tomáš ; Mrázek, Vojtěch (referee) ; Vašíček, Zdeněk (advisor)
This work describes the design of wireless timer for fire sport disciplines. Its aim is to replace long wires with wireless communication while preserving equal or better reliability. Important part is the need for clock synchronization between wireless modules. Related topic is selection of suitable synchronization algorithm and communication protocol. The proposed system was realized in form of prototype using Texas Instruments's development platform LaunchPad EXP 430 FR4133 and wireless modules with Texas Instruments's chip CC1101. Parameters of designed system (especially the accuracy of time synchronization and measurement) were verified in laboratory.
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Time Measurement System for Firesport Competitions
Pelka, Tomáš ; Bidlo, Michal (referee) ; Vašíček, Zdeněk (advisor)
This work deals with the design of universal wireless timer for fire sport disciplines. Fire sport is a group of more than 15 disciplines. There are different ways of time measurement for each discipline. Important part of this work is detailed research of individual disciplines and their requirements at time measurement system and it's accessories. Another part of this work deals with the specification of wireless timekeeping system, which involves suitable partitioning of time measurement system into wirelessly communication modules. The interface for connecting sensors and accessories is also specified. Designed system is suitable for racing and training purposes, it has short installation time. This work also deals with the design of electronics (power and digital circuits) for each module and also with building of prototype, which is tested using prepared scenarios. New findings are evaluated and lead to design of next generation of time measurement system.
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