|
|
Hardware-Accelerated Device for Protection Against DoS Attacks
Kuka, Mário ; Kekely, Lukáš (referee) ; Kučera, Jan (advisor)
This thesis deals with the development of a firmware for hardware-accelerated device used as a protection against amplification (D)DoS attacks. In the today's world, (D)DoS attacks are very common and cause significant financial damages. Therefore the goal is to create affordable and easy to deploy centralized device that would resolve this issue. To reach this goal, a hardware accelerator is being used for the high-volume data transfer processing through a single commonly used server. Design and implementation of the firmware had been done considering the fact that this device will be used in the networks with 100\,Gbps speed. The whole system had undergone functional verification and its real throughput was verified within the laboratory testing as well. Created device has been already deployed into the CESNET network infrastructure during the time of the writing of this thesis and it has been tested by the network administrators. Based on the received feedback, the development will continue focusing on expanding of the detection of more types of attacks.
|
|
|
Accelerated Detection of Network Security Threats
Piecek, Adam ; Kekely, Lukáš (referee) ; Kučera, Jan (advisor)
This bachelor's thesis deals with the acceleration of IDS (Intrusion Detection System) for detection of security threats in networks. The main goal of the thesis is a proposal to use the Software Defined Monitoring (SDM) concept to accelerate the activity of IDS applications with a regard to their subsequent deployment for high-speed network analysis. The proposed system is implemented and subsequently evaluated for two selected open-source applications - Snort and Suricata. Over and above the task, native support for the SZE2 interface for packet acquisition is also implemented for the Suricata system in order to achieve even faster acceleration using an accelerated network interface card. Two alternatives of the concept are further analysed and compared in the thesis. The first alternative uses the hardware-accelerated version of SDM, while the second alternative is based on full software implementation of the SDM principle. Both alternatives are then evaluated in terms of achieved results and performance parameters of the entire system before and after the acceleration.
|
|
|
Implementation of Self-Correcting Codes for 100 Gb/s Ethernet
Velecký, Jan ; Kučera, Jan (referee) ; Kekely, Lukáš (advisor)
The thesis deals with the design of entire RS-FEC layer for the 100 Gb/s Ethernet according to IEEE 802.3-2015 standard including Reed-Solomon encoder and decoder. Text clarifies mathematical basis of finite fields, linear block codes, cyclic codes and particularly Reed-Solomon codes used in design. Design of RS-FEC layer transmit side has been adjusted for implementation in COMBO network cards which use Xilinx Virtex-7 FPGA and realized in VHDL. Encoder has been optimized in several steps - as for FPGA resource usage and as for VHDL code synthesis duration. Reduction of resource usage has been achieved by using pipelining thanks to properties of cyclic codes. Synthesis duration then by creating logic of encoder on gate level on its own. Resulting implementation has been tested in simulation and it is optimized enough for usage in FPGA for Ethernet implementation. It is possible to adapt both design and implementation for 400Gb/s Ethernet which does not exist yet at the time of design.
|
|
|
Generation of Binary Prefix Tree According to Probabilistic Parameters
Ženčák, Tomáš ; Kučera, Jan (referee) ; Matoušek, Jiří (advisor)
The goal of this work is to create a prefix set generator which will be capable of generating a prefix set from parameters specified in the ClassBench toolset. This work describes a possible approach to generation, as well as the final algorithm for prefix set generation. The resulting generator is able to generate prefix sets whose average deviation from the target parameters is typically orders of magnitude lower than the deviation of sets generated by ClassBench.
|
|
|
Testing in agile projects
Košťál, Ondřej ; Buchalcevová, Alena (advisor) ; Kučera, Jan (referee)
This thesis deals with the description of software testing in agile projects. Unlike the traditionally managed projects, testing in agile projects is not a discrete phase. In agile managed projects, testing is integrated into the entire development process. Testing takes place continuously throughout the project to ensure frequent delivery of valuable software in short development cycles. The aim of this diploma thesis is to create a comprehensive description of software testing in agile projects. The introductory part describes in detail the principles and values of the Agile Manifesto, as it is the cornerstone of the whole agile concept. Next, the basic differences between the traditional and agile approach to software development, aspects of agile design testing and agile methodology are described. The following section looks into the matter of the agile team, that includes its size, structure, and approaches that an agile team uses during its work. In terms of testing, this is in particular the Whole-Team Approach. The thesis then describes the role of the agile tester, his/her knowledge, skills and activities, which contribute to the creation of valuable software. As next, the key agile artifacts, meetings, and practices related to testing are described. The final part of this thesis presents the principles and practices of agile testing. Another aim is to design a teaching concept for 4IT479 - Software Testing in Agile Projects. The teaching concept is designed based on the theoretical knowledge described in this thesis. The teaching concept is further complemented by simulations that help students better acquire the theoretical knowledge.
|
|
|
Improvement of sporting organization IS
Rebenda, Jiří ; Palovská, Helena (advisor) ; Kučera, Jan (referee)
The thesis addresses the information system improvement for the specific sporting organization. The main motivation behind this and assumption, too, is the intention to improve operation in the sporting organization TAEHAN. The main aim of the thesis is the improvement proposal for the current IS. It is achieved by fulfilling the following objectives - current situation analysis and creation of proposals for improvement measures, new IS detailed requirements specification and its rough design which should express its main structural features. This set of objectives corresponds to the way of organizing thesis into individual chapters. In order to meet the first objective, it was necessary to create a list of improvement measures, which results from the description of the current situation and identification of the existing solution shortcomings. In terms of the benefit it is the most important part. The second objective was achieved by drawing up a comprehensive list of validated requirements. As a validation method, it was chosen the check based on checklist taken from existing information sources. The last objective was the design of new IS form. It was divided into two parts - in the first, based on the use cases, the IS was divided into several subsystems and in the second part, rough architecture of the possible solution was described including the advantages of its certain aspects.
|
|
|
Design and Implementation of System for Aggregations of Real Estate Offers in the Czech Republic
Drobník, Jakub ; Kučera, Jan (advisor) ; Chlapek, Dušan (referee)
The diploma thesis deals with the design and implementation of software for aggregations of real estate offers in the Czech Republic. The aim of the thesis is to create a system which aggregates the data of real estate offers from web pages. This thesis consists of two basic parts. The context of creating the system is described in the first part. The author discusses ways to retrieve data from websites - especially the extraction of data using automated robots - in the first part of the thesis. The design and implementation of the system are described in the second part. The author and sponsor define requirements for the system in the second part of the thesis. The outcome of this thesis is a prototype that aggregates data from real estate portals into the prepared database. The main contribution of the thesis is an example of a possible approach that can aggregate data from a particular market segment and put it into the database.
|
|
|
Possibilities of using open linked data in healthcare
Skůra, Tomáš ; Molnár, Zdeněk (advisor) ; Kučera, Jan (referee)
This thesis deals with the possibilities of using open linked data in healthcare. The first part of thesis deals with the problematics of open linked data and defines major terms, legislative view and presents main benefits and risks from open data on research based on case studies and analysis. The second part of thesis deals with analysis of datasets in Czech Republic and abroad, focusing specially on datasets from healthcare. This objective is achieved by comparing and analyzing national open data catalogues in terms of categorization of its content, usage by applications and openness in terms of used data formats. Following third part of thesis aims to create a model dataset according to National set of indicators of health services. Its structure and generated physical representation from extracted and generated data is based on research of available indicators of health services quality in the Czech Republic and Great Britain. The last part of this thesis aims to create a design of web application, using said dataset, and its subsequent verification by implementation. The outcome is web application mediating catalogue of medical facilities in the Czech Republic and mechanism for comparing health care facilities by index of mortality.
|
|
|
Creation of a publication plan in the field of science and research
Smetana, Tomáš ; Chlapek, Dušan (advisor) ; Kučera, Jan (referee)
This thesis focuses on the topic of open data, especially in the field of science and research. The work is defined by six sub-targets and characterize the area of science and research in the Czech Republic and abroad, to characterize the issue of open data in the Czech Republic and in the world, describe the method of publication of data on the promotion of science and research in the Czech Republic and in the world, how to propose a procedure and create publications plan for TA CR, prepare a sample dataset, and then evaluate the procedure used. The work is divided into thematic blocks, which are based on these goals. It consists of an introduction, theoretical part, practical part and conclusion. The introductory section defines the objectives of work and research resources devoted to similar topics. The theoretical part describes the problems of science and the problem of open data in the Czech Republic and other countries, and also the process of creating publication plan according to the chosen methodology. The practical part contains according to the targets two parts, one is the analysis of open data of science and research and other preparation publication plan TA CR. The practical part ends with evaluation of procedure used with proposals for improvement. The conclusion contains a summary of the work and evaluate the goals achieved.
|
|
|
Comparison of selected database systems
Fiala, Adam ; Chlapek, Dušan (advisor) ; Kučera, Jan (referee)
This bachelor thesis is based on comparison of popular open source and proprietary database systems. The criteria were preselected in advance and highlight the strengths and weaknesses of each defined system. In addition to that, this thesis is focused on the characteristics which are playing an important role and might be significant for database selection. First part of the work is dedicated to database problematic concepts and various software categories where each individual system belongs along with the associated types of licenses. This thesis is also providing an overview of market analysis that is followed by introduction of selected products. Second part of the work is mainly focused on criteria selection and actual comparison. As a conclusion, an overview summary of results are gathered which can serve as an important information for selecting the right database management system.
|
guest ::
RSS feed.