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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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Interactive Web Interface for IP Flow Data
Salač, Radek ; Grégr, Matěj (referee) ; Matoušek, Petr (advisor)
This thesis describes development of application for analyzing IP flow data. The author conducts relative comparison of already existing protocols and tools and studies theirs pro's and con's. Based on this comparison and features requested by users, author develops his own application primarly focused on interactive and user-friendly interface for working with IP flow data.
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Netflow Data Application Interface
Šoltés, Miroslav ; Matoušek, Petr (referee) ; Podermański, Tomáš (advisor)
This diploma thesis deals with design and implementation of NetFlow data manipulation tool. It contains analysis of IP Flow network monitoring, description of nfdump tool and format of Netflow v9 records saved by nfdump. The focus of this application interface lies in effective manipulation with NetFlow records.
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Validation of Network Parameters Based on Network Monitoring
Martínek, Radim ; Veselý, Vladimír (referee) ; Žádník, Martin (advisor)
The Master's Thesis presents a theoretical introduction, familiarization with the issue and a implementation for a solution of a "network parameter validation" tool, which is founded on principle of network traffic monitoring. Firstly, the current development of computer network setup is analyzed with its limitations. This is an initial point for an introduction of a new approach for implementation and verification of required network setting, which uses techniques of verification, simulation and validation. After the introduction into the context, validation techniques are specifically examined. The Thesis main contribution lies in the capacity to determine appropriate parameters, which can be used for validation and also for implementation of the tool, which ensures validation process. The network traffic, which characterizes the behavior of the network, is collected by NetFlow technology, which generates network flows. These flows are consequently used by the designed tool used for validation of required network parameters. This process overall verifies whether the main computer network requirements have been met or not.
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Web Portal for Network Traffic Reporting
Dufek, Milan ; Straka, Martin (referee) ; Tobola, Jiří (advisor)
This thesis deals with gathering and analysis of statistic data about network traffic, it also deals with preserving and displaying such a data. The goal of this thesis is simple and quick user interface in web portal. The source of the statistic data is NetFlow technology. We use NfDump tool for reading the gathered data. Implementation is done in PHP, XHTML, CSS and JavaScript. SQLite Database is used for preserving the data.
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Detecting P2P Networks Using NetFlow
Starigazda, Michal ; Čejka, Rudolf (referee) ; Matoušek, Petr (advisor)
This thesis addresses the problem of identifying P2P networks within NetFlow traces. There are presented different methods for identifying P2P networks. Their advantages and disadvantages are discussed in compare to a method using NetFlow technology. This method is based on traffic characteristics and behaviour of specific application. The theoretical section presents characteristic features of P2P systems in general. A system based on these and more application-specific features is proposed to detect selected P2P application -- BitTorrent. Finally, a NfSen plugin for detecting BitTorrent protocol within network traffic (using NFDUMP tools) is implemented. Detection targets users of BitTorrent protocol using NetFlow traces without inspecting the payload of the packets.
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NetFlow Data Manipulation Tool
Šoltés, Miroslav ; Podermański, Tomáš (referee) ; Grégr, Matěj (advisor)
This bachelor thesis deals with design and implementation of NetFlow data manipulation tool. It contains analysis of IP Flow network monitoring, description of nfdump tool and format of Netflow v9 records saved by nfdump. The focus of this work lies in effective manipulation with NetFlow records.
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Distributed Tool for Extraction of Information from Network Flows
Sedlák, Michal ; Grégr, Matěj (referee) ; Žádník, Martin (advisor)
This work deals with the extraction of information from flow records that are the result of network monitoring by the IPFIX system. The goal of the work is to design a tool that allows querying stored network flows created by the open-source collector IPFIXcol2. Querying is performed with the highest possible efficiency and performance in mind, which is achieved by using appropriate data structures and thread-level parallelization, as well as by using multiple machines.
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IP Flow Filter
Štoffa, Imrich ; Krobot, Pavel (referee) ; Wrona, Jan (advisor)
This thesis is focused on unification of filtering languages used by IP flow collecting program and library for their analysis. At the moment these implementations use different filtering modules and file formats. Because of this, inconsistencies in results arise and as a response to this, creation of one filtering module was proposed as part of effort to better integrate collection and analysis of IP flows using these programs. The one filtering module aims to provide one implementation and support for popular filtering language for use in the programs. Thesis contains theoretical introduction to flow monitoring in networks, describes algorithms useful for evaluation of conditions on flow records and packets. The core of authors work is design and implementation of the filtering module and its wrappers for the collector and analysis library. Results of performance tests and evaluation of features can be found in the thesis's conclusion.
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Distributed Processing of IP flow Data
Krobot, Pavel ; Kořenek, Jan (referee) ; Žádník, Martin (advisor)
This thesis deals with the subject of distributed processing of IP flow. Main goal is to provide an implementation of a software collector which allows storing and processing huge amount of a network data in particular. There was studied an open-source implementation of a framework for the distributed processing of large data sets called Hadoop, which is based on MapReduce paradigm. There were made some experiments with this system which provided the comparison with the current systems and shown weaknesses of this framework. Based on this knowledge there was created a specification and scheme for an extension of current software collector within this work. In terms of the created scheme there was created an implementation of query framework for formed collector, which is considered as most critical in the field of distributed processing of IP flow data. Results of experiments with created implementation show significant performance growth and ability of linear scalability with some types of queries.
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