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Perfecting the analysis of 10Gbit/s computer network
Ťápal, Tomáš ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
The master’s thesis consists of several parts. Describes the technology 10 Gbps Ethernet. Analyzer Ixia and Endace presents, especially their use for traffic analysis and stress testing the network devices. It deals with documents RFC concerning the routers and switch testing. Thesis includes the reports of tests switches and router performed by RFC 2544 and RFC 2889 documents. Part of the thesis is dedicated to COMBO FPGA cards. Documentations to the analyzers is created in this thesis and macro is on the CD for presentation of measurement results.
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Performace and Stress Testing Tool
Javorský, Daniel ; Veselý, Vladimír (referee) ; Ščuglík, František (advisor)
This thesis is concerned about performance and stress testing of Xtend product developed by Xura, Inc. Software development knowledge, theoretical knowledge of testing and testing tools are described in opening chapters together with key features and services provided by Xtend. Emphasis was put on implementation of performance and stress testing tool, which focuses on short-term and long-term testing scenarios and output of this tool serves Xtend developers. Part of this thesis also focuses on results of stress and performance tests.
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A Tool for Robustness Testing of Web-Services
Zelinka, Tomáš ; Očenášek, Pavel (referee) ; Rychlý, Marek (advisor)
This project deals with testing of web services. The result of this work will be a tool for load testing of web services using fault injection in their communication. The first part of the project discusses the basic aspects of testing web services. The second part of the work is more focused on testing high loads in combination with fault injection. The tool will allow automated run of the tests. The distributed model of the tool was designed to simulate real loads. In the last chapter are summarized achieved results.
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Stress testing of computer networks
Bolek, Daniel ; Martinásek, Zdeněk (referee) ; Hajný, Jan (advisor)
Bachelor's thesis deals with stress testing of server running on operating system Linux. Theoretical part of this project briefly describes the history of Linux, choice of distribution Debian and the server's applications Apache and Vsftpd. Then I describe device Spirent Avalanche 3100, which is designed to generate load and interprets results of tests. Semestral project also deals with DDoS attacks, analyzes current state in this field and describe those DDoS attacks, which provides device Avalanche 3100. Then shows possible solution, how to proceed, if we want to design protection against DDoS attacks. Practical part of semestral project is focused on installation of a operating system Linux, implementation and configuration web, FTP and SSH server services and firewall settings. After that the server is subjected to stress testing. The main aim is to test the success of HTTP and FTP server for different load height and determine, whether size of downloaded file has an effect to response time of the server. The aim of following section is to measure the impact of the choosen DDoS attacks. Protection against SynFlood attack is tested in the last part.
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Stress Testing of Internet Telephony
Šípek, Martin ; Ilgner, Petr (referee) ; Číka, Petr (advisor)
The thesis deals with the development of a module for JMeter that adds SIP stress testing functionality that was previously missing in the program. The theoretical part of the thesis deals with Internet telephony and codecs used in telephony. The SIP protocol is discussed in detail and the end of this part is devoted to stress testing. The practical part focuses mainly on the development of the proposed module, where the code of the module is described in detail, but it also deals with the installation and configuration of the Asterisk PBX on which the proposed module is tested. The results of this testing are analyzed at the very end of this thesis.
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Firewall Security Analysis
Cigánek, Josef ; Burda, Karel (referee) ; Hajný, Jan (advisor)
The bachelor essay is about security analysis and stress testing of firewalls. The main goal is to create a testing environment for eavesdropping of all communication of the firewall, on the principal of security analysis of the hardware firewall and stress testing with device Spirent Avalanche. The theoretical part of the essay is informing the readers about the problems surrounding firewall, security audits and penetration tests. The following practical part consists of commenting on the results of chosen security analysis and stress testing, applied in a laboratory for the hardware firewalls Hillstone SG-6000-G2120 and SG-6000-M7260.
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Stress Testing of Internet Telephony
Šípek, Martin ; Ilgner, Petr (referee) ; Číka, Petr (advisor)
The thesis deals with the development of a module for JMeter that adds SIP stress testing functionality that was previously missing in the program. The theoretical part of the thesis deals with Internet telephony and codecs used in telephony. The SIP protocol is discussed in detail and the end of this part is devoted to stress testing. The practical part focuses mainly on the development of the proposed module, where the code of the module is described in detail, but it also deals with the installation and configuration of the Asterisk PBX on which the proposed module is tested. The results of this testing are analyzed at the very end of this thesis.
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Macroeconomic stress-testing of banking systems: survey of methodologies and empirical application
Šimečková, Jana ; Geršl, Adam (advisor) ; Pečená, Magda (referee)
This thesis deals with stress testing as a process that helps to assess the impact of potential adverse shocks on the soundness of a financial system. First section is dedicated to non-technical discussion about stress testing and to some methodological issues. The main focus lies on the system-wide macroeconomic stress testing. The empirical part of the thesis is a contribution to macroprudential analysis of the quality of the aggregate loan portfolio in the Czech Republic. This study adopts a vector autoregression model applied to the Czech banking sector in order to judge its stability and present some evidence on macroeconomic variables affecting the Czech banking system. As a measure of the strength of the loan portfolio is used the stock of non-performing loans vis-à-vis total loans in the sector. The thesis follows the widely used methodology and seeks to identify significant macroeconomic risk factors affecting the loan portfolio quality. The latter part aims also to forecast the most likely development of the loan portfolio.
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Financial Stability Issues and Stress Testing of the Insurance Sector
Hauryliuk, Nadzeya ; Jakubík, Petr (advisor) ; Čech, František (referee)
The purpose of this thesis is to provide an overview of risk and vulnerabilities for financial stability of the European Insurance sector. The methods and principles of risk assessment are examined, as well as their application for the insurance sector. The current macroeconomic situation and its impact on insurers' financial stability is described. Downward changes of interest rates are identified as the biggest current risk. This results from a system-wide stress test conducted by EIOPA (European Insurance and Occupational Pensions Authority), analysis of sensitivities published by several big European Insurers published on a yearly basis and finally from an econometric analysis of the relationship between market data and changes in macroeconomic variables. Keywords financial stability, stress testing, insurance sector, insurance risks
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Credit risk stress testing of the Czech banking sector
Vachušková, Karolína ; Pečená, Magda (advisor) ; Švéda, Josef (referee)
This thesis aims to describe stress testing in the Czech banking sector focusing on the most significant banking risk, which is credit risk. The thesis examines the difference between regulatory and internal stress testing, compares their assumptions, outcome quality and usability. It deals with the regulation of stress tests, which banks must fulfil. Further, it uses the current Covid-19 crisis as a test of whether the adverse scenarios used are sufficiently severe to cover the risks for and impacts on the actual negative development of the economy. This analysis assesses the Czech banking sector's readiness and resilience and includes the reactions of banks and the Czech authorities to increasing risks.
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