Detekce kybernetických útoků v lokální síti s využitím Raspberry Pi

This bachelor's thesis focuses on the detection of cyber-attacks in a local network using Raspberry Pi and other open-source tools to design a home detection centre and implement it in a home network. The first chapter defines cyber-attacks as well as basic network security practices and explains the OSI model and the functions of each layer. The last part of the first chapter provides detailed explanations of second and third layer attacks, along with basic prevention methods against them. The second chapter focuses on intrusion detection systems and their methods as well as current software options used to select a detector solution. In the third part of the thesis, the proposed solution is designed and the placement of individual network elements is described, along with the introduction of an experimental workspace in which the design is implemented. Furthermore, the functionality of the detection system is verified in this chapter and the possibilities of creating custom rules for detecting specific cyber-attacks are presented. Finally, the third chapter shows the communication between the individual tools of the detection centre and displays several examples of event visualization.