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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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Router principles illustrating software for teaching support
Sobek, Jiří ; Vymazal, Michal (referee) ; Vychodil, Petr (advisor)
This bachelor thesis is mainly focused on the network functionality and its key component, the router. The main points of this work are an explanation of the network principles and router functions which are extended with information about routing protocols and its mutual separation. The practical part considers a realization of applets which should serve as a school software. In detail they explain the way of routing protocols work and its inner structure. Simultaneously consider the principles of two significant routing protocols such as Open Shortest Path First (OSPF) and Routing Information Protocol (RIP). All of the applets are finally loaded on the web page which helps to their visitors understand the complexity of routing and other infomation.
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Communication scheme of WSN in Omnet simulator
Mikauš, Jiří ; Šimek, Milan (referee) ; Holešinský, Pavel (advisor)
In the introduction of this semestral thesis there is an theory about wireless sensor networks which are still more used. Wireless sensor networks contains thousands nodes which communicate with each other due to wireless channel and so they create together a structure of the network. The nodes are low-energy and transfer information about measured medium to the base station which processes them and further provides to user. In the work are described protocols for medium access control and routing described. They place emphasis on as high reduction of consumption of energy as possible and thus they help to extend a network lifetime. Further the simulations in simulation program Castalia were performed where the energetic requirement for individual protocols of medium access are compared. As next there were also compared two communication units used in real application.
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Laboratories with CCENT Network Visualiser
Kadlčík, Michal ; Pelka, Tomáš (referee) ; Burda, Karel (advisor)
This work describes design and practical realization of three laboratory works for students of MNSB. These works are aimed to practice basics of computer networks, especially the configuration of LAN, IP addressing and routing. Local desktop simulator of computer networks CCENT Network Visualizer is used as a training program. Networks are created with the help of several graphical objects, which are configured and diagnosed as a part of this lab work. Additionally there is software that supports studying in the form of web pages, where the lab tasks are mentioned with correct results and some examples. Also the possibility of taking included tests and evaluation of answers. The simulator combined with the software is run by students on VMware virtual machine, so the work deals as well with the implementation on computer workstations.
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Principals, switching functions and routing techniques in computer networks
Dvořák, Pavel ; Pelka, Tomáš (referee) ; Polívka, Michal (advisor)
This bachelor thesis consider main principles and function of active network components. Mainly is intent to component working on the third level of referential model ISO/OSI, router. There are described its main parts and more closely charactered routing protocols. Then is verified the ability of dynamic routing to react to failure in the network and there is measured the reaction time of crossing to secondary route when using different routing protocols. Another part of the thesis is focused on the questions of Quality of Service (QoS) and its support in computer networks. There are explored various ways of the QoS configuration on the routers and the proper of them is chosen and applied to the test network.
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Usage of NS2 simulator in multicast networks
Hošek, Petr ; Mlýnek, Petr (referee) ; Koutný, Martin (advisor)
The thesis is focused on routing in data network, especially on network method of multicast. The first section closely deals with particular multicast protocols and next with models of multicast, mainly Any Source Multicast and Source Specific Multicast. The main point of this work is implementation of multicast using Network Simulator. On the practical level, two laboratory exercises are included. In this part, readers have the possibility to make sure of reached knowledge of multicast and its implementation in NS2.
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Routing protocols metric determination in wireless sensor networks
Dušek, Martin ; Šimek, Milan (referee) ; Morávek, Patrik (advisor)
This bachelor’s thesis deals with wireless sensor networks (WSNs) in terms of routing protocols and metrics. There is described common view on these networks and their comparison with IP networks. In addition, some types of protocols, used in WSNs, are described and representatives of each type are included. There is also considered influence of metrics on a route selection and presented two methods of calculation. In conclusion, an application, that simulates the use of each type of metrics for path search and displays the differently evaluated paths, is designed.
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Company Information Security System
Hála, Jaroslav ; Mazálek, Vladimír (referee) ; Sedlák, Petr (advisor)
This work deals with the introduction of information security system in a company that provides internet. It is a hardware and software solutions for the benefit of quality information needed to monitor and manage networks on a professional level. Used solutions are versatile with regard to the diversity of the market and the speed of technology development.
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Design of unicast and multicast models in NS2
Votava, Martin ; Burget, Radim (referee) ; Šimek, Milan (advisor)
This work is focused on Network Simulator 2 - tool used for simulating network implementations. Focal point of this work is simulating of unicast and multicast routing. This work also describes protocols used on transport layer, such TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). Last but not least work includes laboratory part in which reader is able to verify reached knowledge in Unicast and Multicast simulation.
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Simulation scenarios in IT Guru environment for Communication technology course
Rybka, Štěpán ; Hasmanda, Martin (referee) ; Jeřábek, Jan (advisor)
This thesis called Simulation scenarios in an IT Guru enviroment for Communication Technologies deals with the design of laboratory experiments for the above-mentioned subject. The first part is a theoretical introduction to the protocols. The practical part contains the tasks itself. The work includes four laboratory tasks with a detailed description of the work and an illustrative pictures. The first two tasks are focused on the application protocols, with which the user comes into contact with every day. The other two are focused on routing protocols, precisely the internal routing protocol IS-IS and BGP external routing protocol. A free version of simulation software OPNET Modeler and IT Guru enviroment version 9.1.A were used to create the work.
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