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Graphical Visualization of Network Traffic Geographical Data
Kachlík, Jakub ; Holkovič, Martin (referee) ; Hynek, Jiří (advisor)
During ongoing Internet attacks is important to find out as much information about the attacker as possible and to pass this information clearly to the network administrator. The Flowmon monitoring system is currently able to determine the source destination of sent packets, group them into flows and write them into a table. The data visualized in this way are confusing to create a geographical analysis of the attack. The objective of this work is to create a web information dashboard that will display geographic visualizations of network traffic. It will provide more detailed and easier-to-understand analysis to users of the tools.
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Network Traffic Analysis Based on Sketches
Dřevo, Aleš ; Kekely, Lukáš (referee) ; Bartoš, Václav (advisor)
Aim of this thesis is to create a program for network traffic analysis and for detection of anomallies in the traffic. The Heavy-Changes Detection technique which falls within the Data stream algorithm category is used to do so. Special structures called sketches are used for data processing. These structures are capable of maintaining large amounts of data with low memory consumption. Programs from Nemea system for which this project is created are used for gathering necessary network data.
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Detection of anomalies in data center network traffic
Korzhasbayeva, Leila ; Uher, Václav (referee) ; Burget, Radim (advisor)
Ve velkých společnostech existuje spousta kriticky důležitých strojů pracujících bez přestávky každý den. Jednoduché Log Management řešení není vždy dostatečné k zachycení všech dat, která tečou produkčním prostředí. Ani bezpečnostní analytik není vždy schopen sledovat každý zdroj v prostředí, chytat změny v běžném provozu. Zde je bod, kde nám stroj může pomoci. Detekce anomálií v prostředí je hlavním cílem tohoto projektu. Existuje několik řešení prezentovaných a testovaných na datech ze serverů v reálném prostředí definované společnosti. Některé false positives stále se mohou objevovat, ale je to dobrá příležitost k vyřešení v budoucím výzkumu.
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ConnTop - nástroj pro administraci síťové komunikace v Linuxu
HRYZBIL, Daniel
The aim of this bachelor thesis is to design and implement a tool for monitoring network traffic in real time. Theoretical part describes possibilities of collecting information about network traffic. Practical part describes design of the resulting tool implemented in C++ programming language. The tool has a terminal user interface and uses the conntrack table inside the Linux kernel to effectively obtain network traffic information. The tool also supports client-server mode.
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International Alphabets in Network Traffic Monitoring
Talašová, Irena ; Vrána, Roman (referee) ; Polčák, Libor (advisor)
This work deals with the implementation of support for network identifiers containing national characters in the SProbe software project, which is designed to monitor network flows. It was necessary to test and evaluate the status of selected network applications working over SMTP, POP3, IMAP, FTP or SIP protocols. On the basis of the information obtained, an extension of the current software project SProbe was proposed - a module to support network traffic monitoring with national alphabet characters. The proposed solution was then implemented and the functionality of the entire resulting system was tested. In addition, this work proposes and implements a modification of the test environment for faster and more efficient testing of the system focusing on tests containing diacritics.
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Communication of USB3.0 Chip with FPGA
Špeťko, Matej ; Viktorin, Jan (referee) ; Košař, Vlastimil (advisor)
SEC6NET is an abbreviation for project Modern tools for detection and mitigation of cyber criminality on the New Generation Internet. Project is focused on research and development of means for monitoring and analysing the network flow. Probes for monitoring IPv6 networks are developed within this project. Probes are using hardware acceleration based on FPGA platform. My thesis connects two technologies: FPGA and USB. The goal is to transfer data from the FPGA microchip to PC using Cypress EZ-USB FX3 microcontroller. The first part is focused on transferring data from FPGA to FX3 microcontroller. Second part describes the modification of FX3 firmware for getting maximum throughput. The last part focuses on implementing PC application for Linux operating system. The application receives data from the probe and saves them into hard drive using PCAP format.
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Mathematical modelling of HTTP network traffic
Miklica, Jan ; Vajsar, Pavel (referee) ; Molnár, Karol (advisor)
The aim of this thesis is to capture network tradic on the HTTP protocol. Then from the captured tradic to analyze parameters using selected models and compare them with the achal properties of real network traffic. This bachelor´s thesis describes the HTTP protokol and mathematical modeling, and simulation models developed for it. The document described the capture of data tradic on HTTP using Wireshark. In the next part are performed elemental analysis of selected models. In conclusion the analysis results of the selected models are described.
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Monitoring Network Trafic of Linux Server
Pospíchal, Petr ; Ščuglík, František (referee) ; Ráb, Jaroslav (advisor)
Today the world is facing a very fast expansion of the Internet. Every day, more and more companies rely on services provided by network connections between computer systems. Enormous growth of data volume being transferred also requires more sophisticated systems. Thus it's more complicated to maintain the whole tree of network systems. Key issue to maintain reliability of services and profit, is to have perfect overview of each entity's availability. In a world where most of important systems are being run on UNIX-type operation systems is good to have a tool which allows easy access to information related to a system. The topic of this Bachelory work is to describe both concept and implementation of such tool.
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Web Portal for Network Traffic Reporting
Klement, Ondřej ; Žádník, Martin (referee) ; Tobola, Jiří (advisor)
The main subject of this bachelor thesis is an proposal, analysis and implementation of the web portal for network traffic reporting. This work also deals with analysis of creating graphs, tables and statistics from data gained by NetFlow technology. The NetFlow technology itself is the key element in this thesis and this work is based on it. The main goal of this thesis is to make a simple tool for monitoring and analyzing the network traffic by generating complex reports. For the implementation itself, PHP and HTML have been chosen. Reports will be generated as well-know PDF documents.
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