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Ad Hoc Network Scenarios and Different Types of Attacks
Rexa, Denis ; Kenyeres, Martin (referee) ; Škorpil, Vladislav (advisor)
V tejto semestrálnej práci venovanej sieťam MANET a ich bezpečnostným hrozbám sa v prvej časti preberajú a porovnávajú smerovacie protokoly AODV vs OLSR vs ZRP. Ďalej je spomínaný broadcast storm a podrobnejšie rozobrané základné typy útokov v sieťach MANET s návrhmi na potlačenie vplyvu na fungovanie siete. V nasledujúcej kapitole je ukazané a popisané prostredie NS-3 simulátora s uvedeným jednoduchým programom a spôsobmi, ako získať údaje. Posledná kapitola ukazuje vplyv black-hole útoku na sieť a návrh na jej elimináciu.
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Experimental MANET network in NS-3 simulator
Vadkerti, Gabriel ; Langhammer, Lukáš (referee) ; Bartl, Milan (advisor)
This thesis deals with the problem of MANET networks. It presents routing protocols, their types, advantages and disadvantages. The protocols, such as AODV and OSPF, are analyzed in detail. The next section describes the NS-3 simulator and the meaning of its key codes. There are named and explained the most common mobility models and their correct writing into the source code. A MANET network simulation is created and a program for indicating the routes of packets through the network is introduced. The next describes traffic models for data networks. A simple traffic model for NS-3 and a program for graphic representation of this traffic were created. The DCE module for NS-3 is introduced in the last section and a demonstrational program of using Linux stack is created.
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Design of laboratory tasks focused on the OLSR protocol.
Pecina, Martin ; Langhammer, Lukáš (referee) ; Kubánková, Anna (advisor)
An ad hoc mobile network is a collection of mobile nodes that are dynamically and arbitrarily located in such a manner that the interconnections between nodes are capable of changing on a continual basis. In order to simplify communication within the network, a routing protocol is used to discover routes between nodes. The primary goal of such an ad hoc network routing protocol is correct and efficient route establishment between a pair of nodes so that messages may be delivered on time. Route construction should be done with a minimum of overhead and bandwidth consumption. This document describes the Optimized Link State Routing (OLSR) protocol for mobile ad hoc networks. The key concept used in the protocol is that of multipoint relays (MPRs). MPRs provide an efficient mechanism for flooding control traffic by reducing the number of transmissions required.
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Analysis of routing protocols used in MANET networks
Vala, Ondřej ; Hošek, Jiří (referee) ; Kubánková, Anna (advisor)
This diploma thesis is analysis of routing protocols used in MANET networks focusing on protocols OLSR, AODV and HWMP. The work consists of a theoretical and practical part. The theoretical part describes the routing protokols, which are used in MANET networks and their applications to FANET networks. In practical part, there are describes of created mobility model in the NS-3, which are used for comparison routing protocols on the created scenarios of mobility according to the qualitative parameters of the networks.
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Scale free topology networks focused on MANET technology
Sehnálek, Adam ; Janovič, Filip (referee) ; Skořepa, Michal (advisor)
The main goal of my bachelor thesis is familiarization with a question of computer network with free topology aimed at MANET technology, or more precisely Motorola MESH. It deals with simulation of influence of bundle number within the network on data transfer using all possible routing protocols in Opnet Modeler. The first part contains description of basic networks with free topology and their characteristics. It devotes mainly to Mesh networks and mostly to Motorola technologies that are described there. All three Motorola network types can be found there - MOTOMESH Solo, MOTOMESH Duo and MOTOMESH Quattro. The second part of the thesis focuses on routing protocols available for MANET networks in Opnet Modeler. Principles and basic characteristics of protocols AODV (Ad-hoc On-demand Distance Vector), DSR (Dynamic Source Routing), OLSR (Optimized Link State Routing protocol) and TORA/IMEP (Temporally-Ordered Routing Algorithm) a GRP (Geographic Routing Protocol) are described there. The closing part of the thesis is dedicated to the simulation of individual protocols and their influence on transferring multimedia data through the network. It includes exact process of making the MANET network, configuration of individual components, choosing the necessary characteristics and after simulation view. It concludes also the final summary of all simulated protocols.
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Routing protocols in scale-free topology networks
Mahdal, Ondřej ; Kyselý, František (referee) ; Skořepa, Michal (advisor)
This master's thesis (further only MT) deal with problems of scale-free topology networks with a view to technology MANET (Mobile Ad hoc network) or more precisely Motorola MESH. Further studies routing technique and quality of services (QoS) in these networks. Theoretic part of MT in introduction shortly characterizes properties and kind of Ad hoc networks, next part is dedicated to technology Motorola MESH and shows practical usage of this technology. Analysis of problems quality of services and optimalization QoS in MANET is content third parts of MT. Fourth part specifies division of routing protocols, analysis of routing in MANET and characteristics routing protocols OLSR, AODV, DSR and TORA. In practical fifth part of MT are in introduction simulated simple MANET and mesh networks and further is created model of MANET network, into the model are implemented accessible routing protocols in simulation program OPNET Modeler and on the basis of simulation these protocols or more precisely output statisticians of simulation are protocols compared from several aspects and suitability for transmission of multimedia data (voice, video).
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Analysis of MANET Routing Protocols OLSR and AODV in OPNET Modeler Simulation Environment
Machata, Tomáš ; Růčka, Lukáš (referee) ; Hošek, Jiří (advisor)
The thesis deals with MANET networks and it focuses on the routing process. Most attention is paid to the routing protocols AODV and OLSR. These protocols are described in the detail. The aim of the thesis is to create a simulation model of MANET network in OPNET Modeler environment. In this model the AODV protocol is configured. In order to achieve improved characteristics of the network traffic the routing protocol parameters are optimized. Furthermore the process model of AODV protocol in this environment is studied and extended by a new type of message, which allows a transfer of current transmission speed of MANET station network interface. Current transmission rate of stations is retrieved from the statistics. Every station periodically sends a message to neighboring nodes. The node stores the information into the file when a new message arrives.
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Ad Hoc Network Scenarios and Different Types of Attacks
Rexa, Denis ; Kenyeres, Martin (referee) ; Škorpil, Vladislav (advisor)
V tejto semestrálnej práci venovanej sieťam MANET a ich bezpečnostným hrozbám sa v prvej časti preberajú a porovnávajú smerovacie protokoly AODV vs OLSR vs ZRP. Ďalej je spomínaný broadcast storm a podrobnejšie rozobrané základné typy útokov v sieťach MANET s návrhmi na potlačenie vplyvu na fungovanie siete. V nasledujúcej kapitole je ukazané a popisané prostredie NS-3 simulátora s uvedeným jednoduchým programom a spôsobmi, ako získať údaje. Posledná kapitola ukazuje vplyv black-hole útoku na sieť a návrh na jej elimináciu.
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OLSR routing protocol for MANET networks in OPNET Modeler simulation environment
Hošek, Petr ; Molnár, Karol (referee) ; Růčka, Lukáš (advisor)
The first part focuses on general routing of computer networks. It describes the importance of routing, basic elements, algorithms and protocols. It also describes the so-called MANET networks, where there are discussed routing protocols in these networks. The next chapter deals with the analysis of routing protocols OSPF version 3 and OLSR protocol. For both protocols basic algorithms, their use and structure are described. In OSPF protocol there is also described historical development and differences between versions 2 and 3. The OLSR protocol properly describes the principle of MPR nodes, which is one of the most important parts of the protocol which differs it from the others. Next there is a brief introduction of a powerful simulation tool OPNET Modeler which allows simulating the operation and behavior of almost any computer network with a very extensive possibility of options for the functioning of the entire network, as well as nodes it selves. The practical part is divided into five parts. The first section describes the structure of process models, the basic elements, variables, and block editors OSLR routing protocol in OPNET Modeler program. The second part is devoted to the ICI data structure, which is used for inter-process communication and verify the creation and reception of messages using this function. The third part deals with the process model of OLSR routing model. There is a description of various blocks and functions involved in its function of protocol and significance. The fourth chapter shows an extension of data unit protocol OLSR HELLO messages to other fields, which is able to transmit a numeric value between neighboring stations, and these values print it in the console. The last block of the practical part is dedicated to creating its own message which is broadcast between stations like part of the OLSR packet messages. This message includes the parameter of actual data traffic rate of each communicating stations. These values are for each station exported to an external file for later processing.
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Simulation of OLSR routing protocol in OPNET Modeler environment
Potfay, Attila ; Růčka, Lukáš (referee) ; Vajsar, Pavel (advisor)
The main task of this bachelor's thesis is to simulate the routing protocol OLSR (Optimized Link State Routing Protocol) in the OPNET Modeler environment, and to realize a scenario where it is possible to model protocol functionality and properties. The processing of each simulation is divided into three main parts and they are the description of a situation, configuration and the evaluation of results. In the first scenario there is shown the functionality of the protocol, in the second simulation there are scenarios with the nodes of different movement speed, and in the third simulation the energy requirements of the protocol from the perspective of quantity of the transmitted packets are evaluated. Furthermore, in this thesis there is analyzed the way of implementing the routing protocol OLSR in the OPNET Modeler environment. The implementation structure is divided into three levels: the level of a node, a manager and the routing protocol. At these levels the process models, transitions, code blocks, variables and key codes of functions are processed. Next, there is introduced the possibility of extending the protocol. In order to extent the OLSR protocol, the work focused on supporting services quality. The functions are edited for the protocol to create logs, read out the current transfer speed from the statistics, add it to the created pool and organise writing the logs. The results are evaluated and clearly described. This work provides the theoretical basics: it deals with the primary characteristics of Mobile Ad-hoc networks (MANET), describes in detail the OLSR routing protocol and provides information about the OPNET Modeler simulation environment.
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