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Detection of Dynamic Network Applications
Oroš, Petr ; Kaštil, Jan (referee) ; Tobola, Jiří (advisor)
This work deals with the detection of dynamic network applications. It describes a general method for detection of any application layer protocol and automatically searches for the detection rules. The practical part deals with general detection protocol to the automatically generated designs. A special section is devoted detect bittorrent protocol.
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BitTorrent Traffic Detection
Florek, Daniel ; Hranický, Radek (referee) ; Polčák, Libor (advisor)
This thesis deals with a topic of BitTorrent protocol detection within a pcap file. I managed to design and implement a tool based on deep packet inspection which can detect IP adresses and their ports that were involved in a BitTorrent communication. This detection is extendable with flow analysis which may lead into more results but at the same time in a higher chance of false positives. Therefore this kind of detection is just optional.
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Torrent Peer Monitoring
Bezděk, David ; Pluskal, Jan (referee) ; Polčák, Libor (advisor)
This master's thesis deals with analysis and implementation of methods for BitTorrent monitoring focusing on the Mainline DHT protocol. The aim of the thesis was to create a system, that will be looking for BitTorrent peers that participe in the illegal file distribution. Another task of the system was to collect and analyze data for counting size of the BitTorrent network. That was achieved by taking over of existing method. The system was designed and implemented as a module for monitoring of cybernetic crime. It also defines an interface for storing and sharing data, that provides data evaluation, easy data manipulation and serves for possible future extensions.
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Detection of Peer-to-Peer Communication
Letý, Pavel ; Kováčik, Michal (referee) ; Bartoš, Václav (advisor)
This thesis is focused on issues in detection of P2P network from NetFlow. In the theoretical part of this work are introduced actual techniques in detection of this communication in network. There are presented their advantages and disadvantages too. The biggest attention is focused on the classification scheme of Mr. Bashir which deals with a detection of a protocol BitTorrent and a Skype application from Netflow. Following this scheme is designed a detection module for a modular system of a traffic analysis Nemea, developed by Cesnet organization. In the practical part of this work is introduced the implementation of this module. There are also presented results of experiments with real data.
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Detection of Dynamic Network Applications
Burián, Pavel ; Drahošová, Michaela (referee) ; Kaštil, Jan (advisor)
This thesis deals with detection of dynamic network applications. It describes some of the existing protocols and methods of their identification from IP flow and packet contents. It constitues a design of a detection system based on the automatic creation of regular expressions and describes its implementation. It presents the created regular expressions for BitTorrent and eDonkey protocol. It compares their quality with the solution of L7-filter.
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BitTorrent Tracker-Less Peer Monitoring
Vaško, Martin ; Pluskal, Jan (referee) ; Polčák, Libor (advisor)
The goal of this thesis is to effectively monitor peers within BitTorrent network. This research is based on distributed hash tables, specifically MLDHT. In the last decade, focus has also been on efficiency of monitoring within network. Existing algorithms do not provide actual efficiency therefore it is recommended to introduce an estimate accuracy using Bernoulli process. The goal of monitoring is to ensure the highest success of peer search. The work focuses on designing and implementing Bernoulli process model. The measurements show that, the in-depth search (LIFO) is better in the short run. The work focuses on the efficiency of time monitoring, estimation of the peer search error and efficiency using the modeled Bernoulli process. Result of this work is the recommended monitoring time with high efficiency.
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Detection and Analysis of P2P Network BitTorrent Sync
Kutlák, Martin ; Polčák, Libor (referee) ; Matoušek, Petr (advisor)
Bachelor's thesis is focused on issues with detection of the P2P network BitTorrent Sync in network traffic. In the theoretical part of this work is introduced architecture of the P2P networks, BitTorrent Sync protocol and possible methods for P2P network detection. On the base of this knowledge is designed tool for detection of BitTorrent Sync network traffic. In the practical part of this thesis is presented implementation of the whole monitoring system. In the end of practical part are presented results of conducted tests with monitoring system.
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Analysis of Sharing Networks
Blažek, Libor ; Mašek, Pavel (referee) ; Horváth, Tomáš (advisor)
The aim of the thesis is the design and implementation of the protocol in OPNET Modeler. In this work will be developed all the elements have been used no default settings. In the first chapters, making simulation are defined packets. Another chapter consists of a block diagram of workstations, which are assigned to function blocks. The central process is created by the process model, also for the router. The individual elements are inserted into a variety of elements and subsequently used in the simulation. Connection is a new service that has been defined separately. One of the simulations will be created on a smaller scale and the other on a global scale with more features.
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Identifying P2P Users Using Traffic Analysis
Jalsovszky, Zoltán ; Tobola, Jiří (referee) ; Žádník, Martin (advisor)
Bachelor's thesis deals with methods of detection of P2P users like BitTorrent, DC++, Gnutella and others. An application was created, which is able to detect these users using multiple ways. This method combines analysis of packet payload and analysis of network traffic and flows, so more exact detection is possible. Application is written in C++ programming language, and is built on open-source tool L7-filter.
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Robot for P2P Network Scanning
Holub, Michal ; Schäfer, Jiří (referee) ; Janoušek, Vladimír (advisor)
Bachelor's thesis describes the types of P2P networks, their most common mutations and protocols, and design and implementation of the system for browsing P2P networks. The purpose of the system for browsing P2P network is to search for files with unrecognized malicious code. This system is capable to search files on P2P network based on given set of keywords, download them to local disk and to determine whether they are executable or not.
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