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System for Monitoring of Network Protocols
Selecký, Roman ; Dražil, Jan (referee) ; Kořenek, Jan (advisor)
It is necessary to monitor networks namely for diagnostics, troubleshooting, detection of anomalies and suspicious header encapsulations. This thesis aims to design and implement a system for monitoring protocol structure on 10 Gb networks, which will be able to capture packets based on the sequence of encapsulated protocols. To achieve requested throughput some tasks like packet parsing and packet filtering were accelerated in FPGA. Flexibility is achieved by using a tool that maps P4 programs, which define packet parsing process, to VHDL language. Based on the information gained from packet parsing, flow records are created and stored via IPFIX protocol. This information is displayed through a graphical user interface in the form of protocol tree, whose nodes are associated with flow records.
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Using NetFlow Data to Create Filtering Rules
Pločicová, Dominika ; Nagy, Peter (referee) ; Grégr, Matěj (advisor)
Cieľom práce je navrhnúť a implementovať systém, ktorý bude schopný detegovať prebiehajúci DDoS útok z dát NetFlow a vytvoriť filtračné pravidlo na jeho zastavenie. Po načítaní definície profilov danej administrátorom by sa mala skúmať sieťová prevádzka. V prípade prebiehajúceho DDoS útoku z jedného alebo viacerých definovaných profilov by sa malo vytvoriť filtračné pravidlo pre elimináciu prevádzky spadajúcej pod daný profil (prípadne profily).
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System for Monitoring of Network Protocols
Selecký, Roman ; Dražil, Jan (referee) ; Kořenek, Jan (advisor)
It is necessary to monitor networks namely for diagnostics, troubleshooting, detection of anomalies and suspicious header encapsulations. This thesis aims to design and implement a system for monitoring protocol structure on 10 Gb networks, which will be able to capture packets based on the sequence of encapsulated protocols. To achieve requested throughput some tasks like packet parsing and packet filtering were accelerated in FPGA. Flexibility is achieved by using a tool that maps P4 programs, which define packet parsing process, to VHDL language. Based on the information gained from packet parsing, flow records are created and stored via IPFIX protocol. This information is displayed through a graphical user interface in the form of protocol tree, whose nodes are associated with flow records.
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