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Autonomous programmer of AVR microprocessors with Ethernet connectivity
Verner, Lukáš ; Daněček, Vít (referee) ; Kravka, Martin (advisor)
he main purpose of this semestral thesis is to get to know programming of Atmel AVR microcontroller, working with SD/MMC cards, working with ethernet (TCP/IP) to create a standalone programmer of AVR microcontroller with ethernet connectivity. The first part deals with the questions of programming theory of memories inside microcontrollers and description of programming algorithm. The most used programming method is called „In System Programming“ - ISP. This method provides easy and fast manipulaton. Concept of this programmer is designed for this ISP method. In this thesis is too explain how to work SD/MMC card and file systém FAT16. This knowledges are necesary to store binary program inside standalone programmer. In final part and in attachments there is hardware design, electrical scheme, bill of materials, printed circuit board.
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Geolocation in Internet using network topologies
Dvořák, Filip ; Verner, Lukáš (referee) ; Komosný, Dan (advisor)
The thesis discusses about modern geolocation methods and it describes the basic principles of their work. The work is divided into 2 parts - the theoretical one and the practical one. The first part of the thesis is focused on the description of these methods and on the explanation of its basic concepts which are used for determining of the physical position of the station according to its IP address. The second more extensive part of the work focuses on the description of the realization of algorithm in the Octant method in the programming language of Java and its use in the experimental net of PlanetLab. One important thing is to create a set of reference points and targets, which are necessary for the testing of the whole algorithm of the Octant Method. The results of estimated accuracy of target location obtained by the Octant method and their comparison with the results obtained by active methods of CBG, SOI and with the passive method of GeoIP are listed at the end of this work.
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Data collection from sensor units
Frkal, Pavel ; Verner, Lukáš (referee) ; Komosný, Dan (advisor)
This thesis deals with data collection from sensor units connected via 6LoWPAN standard (IEEE 802.15.4 standard), which uses simplified IPv6 protocol on the network layer. Featuring optimization makes this solution suitable for use in systems powered with chemical power supplies with a very low current consumption of both the sensor units and the control units. The thesis focuses on collecting data from sensor units that communicate on a star topology basis but it's also discussed possible usage of general topology, the end-station in such case works as active repeater and thus extend sensor network coverage without need of additional devices for wireless frames repeating or forwarding. It evaluates the realization of sensor networks created by both the actual data collection as well as specific technical parameters of used sensor boards. The practical part contains a specific application for gathering data from sensors present on the units and storing them in a relational database MySQL.
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Estimation of the IP station location based on the parameters of network traffic
Ripper, David ; Komosný, Dan (referee) ; Verner, Lukáš (advisor)
This bachelor’s thesis covers the topic of evaluation of the geographical location of stations on the Internet with the help of measurements of the delay and implementation of the CBG method, which embodies both theoretical and practical parts of the bachelor’s thesis. The first part of this thesis is dedicated to passive geolocation methods, types of delays in data network, and their subsequent measurement. The second part pursues active geolocation methods, specifically the CBG method. Aim was to program a localization algorithm in the programming language PHP, subsequently evaluate accuracy of the method and compare with available methods IP geolocation.
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Localization of IP stations based on model of probability delay measurement
Tropp, Peter ; Komosný, Dan (referee) ; Verner, Lukáš (advisor)
The master thesis is dealing with Internet host localization methods, more exactly with determining geographical position of the unknown Internet host connected to the network using RTT delay measuring. The first part is dealing with description of RTT delays that may occur in the network and tools for their measurement. The next is part of thesis is devoted to description of two kinds of localization methods. Ones that are using existing data to determine the position of Internet host also called passive methods, and others that are using RTT delay measurement, also called active methods. The main part is focused on GeoWeight method which is based on geographical localization estimation of Internet host. It is based on RTT delay measurement using the principles of CBG method, enhanced by introduction of the theory of weights according to the probability of the target Internet host. The last part is describing the application that was made to determine the geographic localization of the target Internet host using GeoWeight method. The application was afterwards tested by measuring RTT delay in PlanetLab experimental network. At the end the final measured results were compared with other localization methods (CBG, Octant, SOI, GeoIP).
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Location visualization of sensor units
Hulanský, Jozef ; Verner, Lukáš (referee) ; Komosný, Dan (advisor)
This master thesis deals with wireless sensor network with protocol IPv6. In the begining there are explained the priciples of communication in wireless sensor network, and based on this teories are configured a wireles network with predefined development kit. Furthermore, by using geographic coordinates, positions of the nodes are displayed on a website, what is a part of this thesis. On this website are also presented the measured values from sensors. For saving all informations and measured values about each nodes was used remote MySQL server. Communication between this server and 6LoWPAN network provide Perl script which is runs at periodical intervals. With this method automatization of the whole system are ensured.
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Verification of PlanetLab servers location
Pružinský, Ján ; Verner, Lukáš (referee) ; Komosný, Dan (advisor)
The main objective of this thesis is to analyze the nodes of PlanetLab network. The analysis is focusing mainly on verifying the availability of nodes and on verifying the physical position of nodes. Individual nodes are tested for availability of ICMP protocol and SSH protocol. Availability of ICMP protocol is verified by using ping program. The main part of the thesis is devoted to verifying the addresses of nodes. Identified addresses are compared with entered addresses and the resulting conformity is evaluated at the level of the state, county, city and streets. Precision of specified address estimation is calculated based on given GPS coordinates. This thesis also deals with the dividing of nodes based on calculated usability index and accuracy index. The theoretical part contains a description of an experimental PlanetLab network and Google Geocoding API.
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Intrusion prevention system for network security
Popovec, Juraj ; Verner, Lukáš (referee) ; Balej, Jiří (advisor)
This thesis describes mostly used technologies and methods used for securing computer networks. In detail discusses detection and intrusion prevention system (IPS) issues. Includes laboratory excercise for configuring packet firewall and the second excercise, which simulates securing organization network by firewall with intrusion and prevention system technology.
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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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Geolocation of nodes in Internet using public databases
Sousedík, Tomáš ; Verner, Lukáš (referee) ; Komosný, Dan (advisor)
This thesis is about host localization using public localization databases in the Internet and related problems. There is basic information how geolocation in general works extended with some other geolocating methods with focus on the geolocation databases. Where it was possible it was written how databases were created and kept up to date. In practical part is described the process how locating functions were made and what problems appeared. At the end is evaluated the accuracy of the databases and comparison between databases and other methods.
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