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Internet security threats
Bolek, Daniel ; Jeřábek, Jan (referee) ; Zeman, Václav (advisor)
The diploma thesis deals with a development of a system, which serves as a supportive tool for improvement of cyberbullying prevention. The system provides continuous collection and evaluation of information about how much time users spend on mobile apps intended for mobile devices running Android operating system. The main parts of the system are the Android application and the remote server with the web application. The Android application provides continuous collection of information about device usage and sends it to the remote server at weekly intervals. Access to mobile device usage history is obtained by the API android.app.usage. The web application is responsible for receiving data from individual devices and for subsequent data processing. The results of data processing are presented through the user interface of the web application. The PHP framework Laravel is used to build the web application.
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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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Internet security threats
Bolek, Daniel ; Jeřábek, Jan (referee) ; Zeman, Václav (advisor)
The diploma thesis deals with a development of a system, which serves as a supportive tool for improvement of cyberbullying prevention. The system provides continuous collection and evaluation of information about how much time users spend on mobile apps intended for mobile devices running Android operating system. The main parts of the system are the Android application and the remote server with the web application. The Android application provides continuous collection of information about device usage and sends it to the remote server at weekly intervals. Access to mobile device usage history is obtained by the API android.app.usage. The web application is responsible for receiving data from individual devices and for subsequent data processing. The results of data processing are presented through the user interface of the web application. The PHP framework Laravel is used to build the web application.
|
|
|
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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