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Design and implementation of network collector
Bošeľa, Jaroslav ; Horváth, Tomáš (referee) ; Oujezský, Václav (advisor)
This master’s thesis deals with description of information protocol of network flow, mainly definition of Cisco NetFlow version 9. Describes it’s features, message format and attributes of transmitted data. The thesis is primarly focused onto NetFlow v9 transmitted template, which defines fileds and data in consecutive data flow. The essence of the thesis consists in implementation of simple NetFlow v9 parser, which has been programmed in Python prog.language, it’s tests of captured UDP data from file and port capture testing on development server in lab. There is a possibility of saving captured and parsed data into prepared database within implementation as output from capturing.
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Applications Development for Software Defined Networks
Piska, Vojtěch ; Novotný, Bohumil (referee) ; Škorpil, Vladislav (advisor)
In this diploma thesis is described new network architecture also known as software defined networks. In first part of work are explained and described tasks of individual architecture layers. Work includes discussion about advantages and disadvantages of these networks. In next part is described OpenFlow protocol which allows to controller communicate with underlying hardware devices. Last part contains proposal of laboratory excercises which demonstrate SDN technology.
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SDN Controlled According to User Identity
Holkovič, Martin ; Ryšavý, Ondřej (referee) ; Polčák, Libor (advisor)
The aim of this work is to connect dynamic identity management system developed under the project Sec6Net with a control of SDN network. The controller Pyretic is used for network control, which allows application development by using the match-action rules. Interface between the identity management system and controller Pyretic is designed and implemented in both systems. To prove the concept, selected use cases related to security, routing and accounting are created. The use cases are implemented as applications for Pyretic controller. All programs were tested in networking laboratory according to the possibilities. The main contribution of this work is to simplify and improve the management of computer networks while providing new capabilities to administrators of these networks and ultimately their users.
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SDN for cloud computing
Kuklovský, Adam ; Frolka, Jakub (referee) ; Slavíček, Karel (advisor)
The theme of this bachelor work is SDN technology. It consists of both practical and theoretical part. In theory section, we described the main concept of the SDN network, functioning of OpenFlow protocol, comparison of individual open source SDN controllers and real onset of SDN technology. Practical section contains procedure of individual components being installed to create topology and to forward realization of laboratory task. The laboratory work also depicts the way of creation and modification of streams in the SDN network.
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Load Balancing in OpenFlow Networks
Marciniak, Petr ; Ryšavý, Ondřej (referee) ; Grégr, Matěj (advisor)
The aim of this thesis is to develop a load balancing tool for OpenFlow networks. Software-defined networking (SDN) principles are introduced (OpenFlow protocol used as an example) and compared to the legacy routing and switching technology. Openflow is the first protocol/API enabling communication between the control and infrastructure planes of the software-defined networking model. Key features of the protocol are described and several OpenFlow controllers are introduced. Current best practices in computer networks load balancing are discussed as well. The load balancing application development process is described including the test laboratory setups - Mininet (SW) and OFELIA (HW). The application test results are evaluated and possible further enhancements to the program are discussed.
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SDN in LAN networks
Kříž, Daniel ; Hošek, Jiří (referee) ; Slavíček, Karel (advisor)
This bachelor's thesis is devoted to the problem of Software Defined Networks. It describes the concept of SDN, the OpenFlow protocol, which is an integral part of this issue, and lastly is mentioned the concept of NFV. The goal is to research this issue, gather information about the available open source controllers and choose the most suitable ones. Furthermore, a proposal for the implementation of the laboratory task and a~list of available components have to be created. The final task is to construct and test laboratory task and then with help of this knowledge create laboratory manual.
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Remote Configuration of P4 Device
Neruda, Jakub ; Kučera, Jan (referee) ; Wrona, Jan (advisor)
Administration of a large network from a central node with a vendor independent API is quite important issue these days. The concept of SDN was truly helpful with realization of the solution, namely in the form of the OpenFlow protocol. Nowadays, a P4 language is gaining momentum, primarily thanks to its ability to describe whole packet processing pipeline and also for the P4 Runtime, solution to the distributed network configuration. CESNET association is one of the research groups starting to support P4 in their network cards beloging to the Combo series. In this work, an API was designed for these cards, aimed at the dynamic flow table configuration. This API was used for implementation of a basic support of the Combo cards in the P4 Runtime.
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Virtual network topology design based on software defined networks
Moravcová, Klára ; Slavíček, Karel (referee) ; Novotný, Vít (advisor)
This Diploma thesis deals with virtualization of data networks, but mainly with concept of software-defined networking. Architecture, security risks and differences besides traditional networks are described within SDN framework. Description includes protocol OpenFlow, which is integral part of SDN concept. Brief summary mentions also NFV concept. The goal of this thesis is to determine available solutions, invent laboratory task and compile laboratory manual. Tables with currently available controllers and commutators for SDN were created and pattern of laboratoral task was realized within Mininet emulator and OpenDaylight controller. Laboratoral task itself is designed with aim to apprize students of subject of Network architecture with SDN concept and its real implementation.
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Mitigation of Volumetric DDoS Attacks in SDN Environment
Hodes, Vojtěch ; Křepelka, Václav (referee) ; Škorpil, Vladislav (advisor)
The aim of this Master's thesis is to explore different attitudes and to design various monitoring and detection concepts of volumetric DDoS attacks in core networks. The thesis deals with data flow control protocols with an emphasis on a modern technology of Software Defined Networks. The last part of the thesis describes verification of the theory by setting up a laboratory environment for volumetric DDoS UDP Flood simulation, detection and automated mitigation.
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Cisco OnePK Technology Demonstration
Chomjak, Richard ; Švéda, Miroslav (referee) ; Ryšavý, Ondřej (advisor)
This bachelors thesis aims to demonstrate the uses of Quality of Services (QoS) within Cisco onePK technology. The created prototype (Gosia) enables the dynamic direction of previously defined data on the basis of a simple configuration language. Individual changes in the direction of the data flow are derived from the state of the network infrastructure.
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