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Implementation of Honeypot tool for monitoring and analysis of network attacks
Němeček, Ladislav ; Červenka, Vladimír (referee) ; Bartl, Milan (advisor)
The goal of this thesis is to describe and categorize the malicious software. Thesis deals with the network attacks and the protection against them as well as how to detect and analyze the attack by the eligible tools. The next part of the thesis deals with the honeypot topic and the possibilities of detection using this software, specifically then the Argos tool. The installation, usage, and the methods of detection of the tool are also being described. The next chapter describes how to secure the honeypot against abuse. Last but not least, the thesis also contains the results of the network monitoring, attacks on the honeypot, and describes the log files used by Argos to interpret the results of the attack detection.
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Control of network operation generator from OPNET Modeler environment
Bartl, Milan ; Hošek, Jiří (referee) ; Molnár, Karol (advisor)
In this work an interface between network simulator OPNET Modeler and network operations generator IxChariot is described. The goal is to control the generator by data from an OPNET modeler simulation. More accurately the generator is supposed to produce a data flow with desired settings of DSCP field, which is used to support quality of service mechanism. The goal can be achieved by two possible approaches: using IxChariot TCL API or IxChariot C API. Both of these approaches are described and conclusions are made at the end.
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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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Usage of Model-View-Controller design pattern in web applications
Margai, Ladislav ; Bartl, Milan (referee) ; Lattenberg, Ivo (advisor)
Content of this thesis is focused on usage of design pattern Model-View-Controller in web applications. The thesis is divided into several chapters. In first chapter is explained how MVC model works and necessary edits for usage in web applications. In second chapter is described development from web forms to MVC and comparison of these two concepts. Third chapter is focused on work with Razor engine. Last three chapters describe development of the application.
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Provisioning implementation in Asterisk open source PBX
Král, Jan ; Bartl, Milan (referee) ; Šilhavý, Pavel (advisor)
The bachelor's thesis "Implementation of provisioning service in Open source PBX Asterisk" deals with a general description of the provisioning service and the options of it's implementation in Asterisk PBX based on the capabilities of the PBX and the endpoint devices for VoIP telephony connected to it. The theoretical part of the thesis also contains a brief description of all the protocols and services needed for successful operation of the service in the particular scenario of implementation described in the thesis. A short introduction and requirements for the designed application are also described. The practical portion of the thesis is focused on instalation and setup of the Asterisk PBX and the provisioning service itself on a virtual server running the CentOS operating system. It also contains all the settings of the server, additional services run on the server, the Asterisk PBX and also the settings of the endpoint devices needed for correct operation of the service. A thorough description of the designed and developed web application for management of endpoint devices for VoIP telephony is also contained in this part.
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Simple Private Branch Exchange Implementation in OpenWRT
Stračár, Ivan ; Šilhavý, Pavel (referee) ; Bartl, Milan (advisor)
The diploma thesis deals with the system OpenWRT. Installing this system on the router Siemens Gigaset SX762. Describes how to compile and upload the simple package helloworld into this system. The package was tasked invitation simple phrase "Hello World" to the system console of OpenWRT. Package only serve to show that the system OpenWRT allows users to customize it according to their needs. After that it was installed PBX Asterisk into the system OpenWRT. Proper functioning of PBX Asterisk has been verified to make a call between two software phones ZoiPer. Furthermore, the work described telephony application programming interface (TAPI). Some of its fun- ctions, interfaces and packages needed to communicate with the system OpenWRT. In conclusion, the presented test topology and verify the operation of making calls between analog as well as softphones.
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Monitoring the operation of local internet networks
Papež, Nikola ; Bartl, Milan (referee) ; Verner, Lukáš (advisor)
This thesis deals with issues of traffic monitoring of local internet networks. Attention is paid to describing main functions and methods of network monitoring, consequently standards for monitoring such as SNMP protocol, WMI service or Cisco NetFlow methods. There are also described some other basic tools with open source licence used for monitoring. The main contribution of this thesis is clarification and subsequent usage of these methods for monitoring on VUT network. For this intermediation was used Nagios tool which used Nagios tool which provided feedback about the status of devices together with the own programmed plugin and tool Cacti which collected data from these devices and created graphical dependencies.
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Analysis of wireless environment using the Ekahau system and the possibilities of cooperation with other systems
Tinka, Zdeněk ; Bartl, Milan (referee) ; Hošek, Jiří (advisor)
The work is divided into two parts. Firts of all deals with surveying and analysis of wireless environment. It contains familiar with analysator Ekahau Site Survey. Below are implementation of the map and then surveying of quality of networks. Finally describes the evaluation results and optimization of networks. The second part describes the localization of objects by AeroScout system using a wireless environment. It occurs in the theoretical description of the topology and equipment necessary for proper operation and practical work progress and evaluate the second part.
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Data network simulation using direct code execution
Trávníček, Michal ; Bartl, Milan (referee) ; Krkoš, Radko (advisor)
Purpose of this master thesis was to explain simulation of real network, point to the imperfection during these simulations and try to find out technologies and solutions that could improve credibility of simulation. For this purpose, network simulator ns-3 has been chosen which supports direct code execution together with Quagga software suite. Master thesis describes internet protocol IPv4, UDP protocol, basics of routing and detailed explanation of OSPF routing protocol. Focus in this thesis is also on general description of simulation, its kinds and detail explanation of discrete simulation that is used by ns-3 simulator. Next chapter explains theory of ns-3 simulator, its development, conceptual overview and objects. Direct code execution and Quagga that both help improve credibility of simulation, are described in last chapter of theoretical part of thesis. In practical part of thesis is explained how to install and configure all three implemantaions of ns-3 simulator on Ubuntu, linux distribution. On the basis of obtained knowledge, the simulation model has been designed, also there has been given detailed explanation of how to create new model of simulation and how to analyze its results for all implementation.
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