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Mitigation of DDoS Attacks Using IDS/IPS
Litwora, Martin ; Tisovčík, Peter (referee) ; Kučera, Jan (advisor)
This This bachelor's thesis focuses on the detection and mitigation of DDoS attacks (Distributed Denial of Service). The main goal is to analyze and practically verify the capabilities of various IDS/IPS, especially the open-source tool Suircata, to mitigate DDoS attacks. Three main DDoS attack groups are analyzed in this thesis. These groups are flood attacks, amplification attacks, and slow attacks. A set of rules has to be created for each attack type from these groups in order for Suricata to mitigate those DDoS attacks. This thesis also implements a set of tools and scripts to check the functionality and effectiveness of the created rules. These tools are used to generate selected DDoS attacks with different parameters. Testing took place in a virtual environment where special nodes had to be created which represent real subjects during a real DDoS attack. The set of tools and scripts was designed in a way that it can easily be used outside this virtual environment where it is possible to have larger network loads, various variants and combinations of systems, and more.
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Quantum Cryptography And Laser Data Transfers
Litwora, Martin ; Maršík, Lukáš (referee) ; Zemčík, Pavel (advisor)
The purpose of this work was to explore and describe the possibilities of quantum key distribution. Describe individual protocols based on quantum mechanics, and different variants of quantum channels of wireless laser connections. At the same time, analyze individual encryption algorithms from the point of view of their security, energy consumption and encryption speed. Furthermore, part of the work included measuring the transfer properties of a real system for the quantum key distribution, including measuring the attenuation of a given connection using an attenuation cell. The goal then was to apply the measurement results to laser data transfers. Laser connections are affected by atmospheric conditions, especially cloud cover. For these purposes, a simulation tool was created that serves to simulate laser quantum channels in the atmosphere.
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Mitigation of DDoS Attacks Using IDS/IPS
Litwora, Martin ; Tisovčík, Peter (referee) ; Kučera, Jan (advisor)
This This bachelor's thesis focuses on the detection and mitigation of DDoS attacks (Distributed Denial of Service). The main goal is to analyze and practically verify the capabilities of various IDS/IPS, especially the open-source tool Suircata, to mitigate DDoS attacks. Three main DDoS attack groups are analyzed in this thesis. These groups are flood attacks, amplification attacks, and slow attacks. A set of rules has to be created for each attack type from these groups in order for Suricata to mitigate those DDoS attacks. This thesis also implements a set of tools and scripts to check the functionality and effectiveness of the created rules. These tools are used to generate selected DDoS attacks with different parameters. Testing took place in a virtual environment where special nodes had to be created which represent real subjects during a real DDoS attack. The set of tools and scripts was designed in a way that it can easily be used outside this virtual environment where it is possible to have larger network loads, various variants and combinations of systems, and more.
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