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A Jabber/XMPP Transport for News via the NNTP Protocol
Halfar, Patrik ; Weiss, Petr (referee) ; Rychlý, Marek (advisor)
This document mention some possibilities of information sharing over computer networks. At the beginning there is described exchange information between group of users by NetNews . Next chapter make short introduction to project Jabber/XMPP and its possibilities. Other part appropriate to possibility combination these services and comment implemented application. There are include descriptions how configure most known Jabber servers for use of this application. There are contain XML schemes of uses files too.
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Recursive IPC Network Architecture: Analyze and Model of Enrollment
Jeřábek, Kamil ; Marek, Marcel (referee) ; Halfar, Patrik (advisor)
This thesis is focused on analysis of the Enrollment and integration of this phase to model of Recursive InterNetwork Architecture (RINA) that is developed in the OMNeT++ simulation environment. In this thesis is the RINA architecture described generally. Furthermore, there are listed cases of the Enrollment and the Common Application Connection Establishement Phase, and it is described when starts and ends. The thesis is especially focused on design and implemntation of these phases of communication in the OMNeT++ simulation environment within Pristine project.
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Evaluation of fracture test of selected core-drilled cylindrical specimen
Halfar, Petr ; Sobek, Jakub (referee) ; Keršner, Zbyněk (advisor)
The diploma thesis deals with effective crack model for a cylinder specimen with an chevron-shaped notch, loaded by a three-point bending. The first part of the thesis is theoretical and the it describes the use of fracture mechanics for quasi-brittle materials – concrete and rocks. Furthermore there is described the linear elastic fracture mechanics and founding the geometry function for a different geometries of fracture tests. The second part describes the FEM program, which was used to calculate the fracture parameters, that were used to determine the length of the effective crack and how the program was tested before it was used. The last part describe calculations of fracture toughness by using the effective crack model on selected rock and concrete specimens.
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Cluster Solution for HA OpenVPN
Dokoupil, Jiří ; Kašpárek, Tomáš (referee) ; Halfar, Patrik (advisor)
The aim of this bachelor's thesis is to analyze the possibilities for running the OpenVPN daemon in a cluster and to implement such a solution. At first, the thesis analyzes current technologies and possible approaches to this matter. Next there's one possible solution described more and implemented. In the end there are results being analyzed, mostly by describing the tests, that took place with the implemented solution.
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Computer Identification Based on Its Network Behaviour
Myška, Michal ; Halfar, Patrik (referee) ; Polčák, Libor (advisor)
This diploma thesis deals with computer identification using network behavioral patterns. Security functions providing privacy are described together with user privacy threats. Then, several approaches to the computer identification based on network behaviour are described. The proposed tool is based on data mining method Multinomial Naive Bayes. Then, the implementation of proposed tool is described and the experiments recognizing success in the identification are performed.
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Secure Neighbor Discovery Protocol
Bezdíček, Lukáš ; Halfar, Patrik (referee) ; Grégr, Matěj (advisor)
This report deals with designing and implementing of a complete SEND protocol for operating systems GNU/Linux. The first part of the document contains a description of ND and SEND protocols. The second part of the document defines security threats connected with unsecured ND. The third part of the report describes a design and implementation of SEND protocol named sendd . Conclusion of the document is dedicated to a summary of accomplished results and information about future development of this project.
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Secure Transport of NetFlow Data
Ručka, Tomáš ; Halfar, Patrik (referee) ; Grégr, Matěj (advisor)
The aim of my bachalor's thesis is secure transport NetFlow data. Communication in NetFlow is not protected against unauthorized intrusion, in addition works over UDP protocol which is protocol that allows data loss. The aim of this work is to create an encrypted tunnel through which communication will take place between the exporter and collector.
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Evaluation and simulations of fracture test of concrete specimens in selected configurations
Halfar, Petr ; Šimonová, Hana (referee) ; Keršner, Zbyněk (advisor)
This thesis deals with the evaluation of the selected fracture test configurations of concrete specimens. These configurations are the wedge splitting test or combinations of wedge splitting test and three point bending. The first part is theoretical and it describes the use of fracture mechanics on the quasi-brittle material - concrete. There are also described linear and nonlinear fracture theory, improvement process of fracture tests and also determination of the fracture parameters from the tests. The second part is practical and it describes editing of load-displacement diagrams by using GTDiPS application and then evaluation of the diagrams. The result of this work is comparison of the concrete fracture energy in each geometric variations of the tests.
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