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Implementation of the ACP protocol into L4 operating system
Kolarík, Tomáš ; Strašil, Ivo (referee) ; Burda, Karel (advisor)
This thesis deals with the implementation of ACP protocol which serves to manage the access for operation system based on L4 microkernel. The theoretical part of the thesis deals with methods of access management in computer networks. It focuses primarily on AAA systems which make access management possible. Furthermore it describes in detail the ACP protocol, the types of messages and their feedback. The next theoretical part is dedicated to operation systems and in particular to their architecture and services. Then we get a closer look at L4 microkernel family, their philosophy and properties. We continue with a detailed description of the L4 application interface and its ways of expansion. The practical section deals with the implemented concept of system for ACP protocol support in computers. General concept is then applied in real implementation of ACP protocol into the L4 operation system environment based on the L4 platform. To assist, I also included a detailed tutorial explaining the modeling and compilation of software for this platform. At this point we describe the methods used at the implementation and the description of particular modules and features. The end of the thesis concludes the information about the ways of testing and the implementation properties.
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Operating system BSD
ĎURKOV, Milan
This bachelor?s thesis gives an overview of the operating system BSD Unix. The theoretical part of the work describes the history, the present and the basic information about the single distributions of this system. It also describes characteristics of the BSD kernel and natively used filesystem UFS which also compares with the Linux filesystem Ext4. The work also comprises description of the BSD license and its comparison with the GNU GPL license. The practical part of the thesis then describes the installation, configuration and practical experience of the work with desktop PC-BSD system.
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Application development for Google Android
Vacula, Josef ; Buchalcevová, Alena (advisor) ; Pecinovský, Rudolf (referee)
This bachelor thesis describes development of applications for Android operating system. The paper is divided into several parts. In the first part, Android operating system is described together with development tools, which are used for development of Android software. The next part of this paper focuses on fundamental blocks of all Android applications, which are necessary for successful development. It includes especially the life cycle of applications, inner communication of application components and working with application data. The whole chapter is dedicated here to graphic user interfaces, where among other things the most used graphic components are described. The last part of the thesis shows previously described theory on a practical example.
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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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Operating Systems' Resource Access Control Models
Vopička, Adam ; Pavlíček, Luboš (advisor) ; Palovský, Radomír (referee)
The thesis deals with models used in access control to operating systems' resources. The thesis' goals are the theoretical description of these models and their comparison, the description of their implementations in selected operating systems and the description of their utilization in securing typified servers. In the first chapter, the reader is introduced to basic terms and principles of computer security and access control. In the second, also theoretical part, selected access control models are described from different viewpoints, for example their factual specialization, basic rules, principles and evolution. At the end of the chapter, the models are compared to each other according to specified criteria. The third, more practically oriented chapter, continues from the initial, both general and concrete introduction with operating systems, to description of access control model implementations in selected operating systems. At the end of the chapter, these implementations too are compared according to specified criteria. The fourth, final part, is dedicated to the description of the actual securing of a web and file server using operating system level access control means. The end of the chapter is dedicated to the possibilities of using these means to secure web applications. The contribution of this thesis from the theoretical point of view is a well-arranged and compact access control model comparison, and also the merger of the theoretical base with practical use of the described model implementations. The thesis is recommended to people interested in the computer security issues in general and people interested in access control from both theoretical and practical sides, e.g. system administrators or system designers.
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Social Security in some Latin American countries
Daza Aramayo, Lourdes Gabriela ; Krebs, Vojtěch (advisor) ; Chvátalová, Iva (referee)
This thesis has aims to acquaint the reader with Latin American Social Security systems. For this end, 7 Latin American countries have been chosen. Henceforth, the different Social Security systems operating in these countries are described. It is a comparative analysis, describing the similarities and differences among them. Is necessary to emphasize that this paper does not only provide current information of the different Social Security systems, but also statistical information, which is considered as essential to the context of the economic, demographic and social environments in which are these Social Security systems function. The systems described are: the Pension System, Heath Insurance, Sickness Benefits, Unemployment Insurance, Family Entitlements and last Maternity Benefits. The countries that have been chosen are the following: Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, and Uruguay. In addition to the comparative analysis in this paper, the level of development in the chosen Latin American countries as well as the latest trends concerning the Social Security systems are determined and explained.
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Monitoring serverů s operačním systémem FreeBSD, jeho aplikací a služeb
Čejka, Zdeněk ; Vronková, Lada (advisor) ; Skopec, Antonín (referee)
V této práci na téma Monitoring serverů s operačním systémem FreeBSD, jeho aplikací a služeb bude provedo nastavení služeb Apache, MySQL, Courier-IMAP, Postfix a ProFTPd a jejich monitoring. Sledováby budou také čísti systému nezbytné k jeho chodu. Práce je rozdělěna do dvou částí: nastavení monitorovaných služeb a aplikací a samotného monitoringu. Nastavení služeb je členěno do kapitol. Každé službě je věnována jedna. V těchto kapitolách je zahrnuto jak nastavení službeb, tak jejich popis a funkce. Část věnovaná monitoringu přináší informace o výstupních datech. Posuzován bude význam výstupů a jejich správné čtení. V této části budou uvedeny případné chyby ve výstupech a jejich řešení. Dále zde bude prezentována interpretace výstupů s ohledem na její různé formy.
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