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Analysis of the communication path attributes for IP geolocation
Rajnoha, Martin ; Komosný, Dan (referee) ; Balej, Jiří (advisor)
The aim of this thesis was to study current resources to find location of stations in the network Internet, mainly active methods that are based on delay measurements. Describe origin of the delay and its parts. Next create an application that is able remotely measure the delay between stations and convert this delay to distance. Aplication calculate geographic position of station on based this distances. For measurement was used experimental network PlanetLab.
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Use of optical cable properties for geolocation in the Internet
Chmelař, Jakub ; Verner, Lukáš (referee) ; Komosný, Dan (advisor)
This thesis deals with the IP geolocation which estimates the geographic location of hosts in the Internet network. The knowledge of geographic location can be used both for targeting specific services and information, such as advertisement or weather forecast, and for better utilization of transport network because it is possible to serve content from sources which are located closer to client. The main topic of this thesis is the Speed of Internet geolocation method (SOI), which is an active method based on measurement of latency in network. The theoretical part of the thesis explains how to perform these measurements and briefly describes a few more active geolocation methods. The practical part includes full description of SOI implementation created using Python programming language. This implementation was subsequently used to accomplish a sequence of measurements which allowed accuracy comparison with other geolocation methods. The final part of this thesis evaluates results of these measurements and offers a few possible changes which could improve accuracy of described implementation.
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Monitoring of communication properties in Internet
Iľko, Pavol ; Červenka, Vladimír (referee) ; Komosný, Dan (advisor)
This thesis deals with measuring transmission parameters of the Internet network, in particular latency of ping, SSH protocol and bandwidth. The thesis is divided into a theoretical and a practical part. Theoretical part describes PlanetLab network, its brief history and contemporary projects. At the same time, tools for data mining from web pages are described. These information obtained from the theoretical part are used for creating PlanetLab nodes list and for programming applications which measure the network transmission parameters. Applications, list of nodes and obtained data are attached on DVD disc.
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Client/Server Application for Global Network PlanetLab
Sladký, Milan ; Ryšavý, Ondřej (referee) ; Matoušek, Petr (advisor)
Objective of this bachelor's thesis is to get acquaint with experimental network PlanetLab, its history, development, principle of its behaviour and usage of this network, for example for development of new network architectures. Program part of this bachelor's thesis consists of concept and implementation of suitable client/sever type application, which runs on PlanetLab network.
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Current methods for geolocation of Internet hosts
Doležel, Pavel ; Müller, Jakub (referee) ; Balej, Jiří (advisor)
This bachelor work deals with IP geolocation, which means the estimation of geographical location of unknown host in the Internet. The aim of my thesis was to make a delay measurement in PlanetLab Network and then with the use of GeoPing technique estimate the real location of the target. The main part of this work is focused on several different delay-based methods, especially GeoPing which employs „Nearest Neighbor in Delay Space“ algorithm in order to exploit the relationship between network delay and geographic location. Base ground for GeoPing is a database of the machines at known location. This database is composed of 9 probe machines, 260 hosts is used like a landmarks and targets. Estimation of unknown geographical location was done on 60 hosts.
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Virtual Access to Nodes in PlanetLab
Fic, Jiří ; Matoušek, Petr (referee) ; Ryšavý, Ondřej (advisor)
PlanetLab as a distributed systems testbed offers a unique opportunity for developing and testing new applications useful for future Internet. This work brings up a scheme and a solution of the problem with accessing PlanetLab by a larger group of students e.g. for the purpose of solving their courseworks. A designed system empowers its administrator to create and control virtual user accounts which provide possibility for all its users to connect to selected nodes in the PlanetLab.
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Localization of geographic position attacker in the Internet
Kubalík, František ; Komosný, Dan (referee) ; Verner, Lukáš (advisor)
This thesis deals with the evaluation of the geographical location of the Internet using delay and implementating method Octant. The first part is devoted to familiarization with the principles of evaluation of the physical position of the stations on the Internet, with a focus on active methods for IP Geolocation. Here it is more space devoted to geolocation Octant algorithm and a more detailed explanation of its principles. At the end of the first part is also familiar with the experimental network PlanetLab. The second part describes the design and implementation of the program in programming language C#, which locates the searched local station with mentioned localization algorithm Octant. Description realization is accompanied by explained examples of the classes with a detailed explanation. Here are also the results of the methods on selected IP addresses of stations with known locations to detect errors or deviations of method from the actual position of searched station. At the end of this section is a comparison with other active as well as passive geolocation methods.
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Location estimation of Internet nodes
Němeček, Ladislav ; Balej, Jiří (referee) ; Komosný, Dan (advisor)
This paper deals with methods of stations’ IP geolocation. It’s describes the methods of passive and active geolocation and it’s more focused on active searching methods, which usees measuring the latency in network. The factors causing delays in data transfer are discussed first, followed by discussion of the issue of measuring these delays. After that a brief description of PlanetLab experimental network, which nodes were used for delay measurment. Main topic is practical implementation of method Constraint-based Geolocation in Java programming language. Last but not least the measurement results of CBG algorithm are tested.
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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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Remote connection to virtualized operating system
Veselý, Marek ; Červenka, Vladimír (referee) ; Komosný, Dan (advisor)
The thesis is focused on the new IT trend – virtualization. Below are described the types of virtualization, as well as different implementations of it. In the following chapters there will be described the TCP and ICMP protocols, as well as the SSH services. The last part of this work is dedicated to measurements where there will be highlighted the advantages and disadvantages of virtualization.
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