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Authentization in distributed web caching environment
Miňo, Tomáš ; Jirovský, Václav (advisor) ; Bulej, Lubomír (referee)
Web servers migth contain sensitive informations, which require authentication. To decrease load of these server, distributed cache system can be used. This thesis consider some proposal of authentication within distributed cache system, which has to follow the security politics of the original server, but without replication the database of access control rules from the original server. Next, the security analysis and prototype implementation of the proposal is accomplished and described.
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Multimedia Grid
Šimko, Viliam ; Galamboš, Leo (advisor) ; Jirovský, Václav (referee)
The thesis describes the possibilities and issues of existing videoconferencing systems. We focus on open-source solutions for group-to-group communication especially the AccessGrid technology that utilizes the multicast packet delivery method of multimedia content. We describe AccessGrid node created for CIANT organization, which has been taken as a starting point for de ning the architecture of a videoconferencing system based exclusively on open-source components, particularly Linux and related software. We address issues related to rewalls and NAT traversal and provide a comparison of various videoconference-related codecs and protocols. Finally, the text touches the question of recording and archiving of conference sessions and provides a new integrated recording application { StreamVNC. The tool allows users to prepare their presentations using localhost recording facility which includes AGVCR for recoding RTP packets, EVIC for grabbing the VNC display and camera source and RAT as an audio encoder.
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The VoIP protocols real time analyzer
Dvořák, Michal ; Jirovský, Václav (advisor) ; Kvítek, Petr (referee)
This thesis goal is to desing an application which would allow real-time monitoring and analyzing of services for transferring voice over the Internet network, based on the study of the relevant standards. The thesis focuses on monitoring the H.323 standard. An implementation is a part of this thesis.
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From software team to software firm
Prokeš, Radovan ; Král, Jaroslav (advisor) ; Jirovský, Václav (referee)
This Graduation Thesis is about a software company start-up from a software development team created during a Project at the Faculty of Mathematics and Physics of the Charles University (MFF UK), to an operating software company which introduces its own products to the European mass market. The author then takes a think about the future of this company. The Thesis describes this process from the side of finances, negotiations with potential investors, company management, project management, software developers' team, human resources, and behavior towards clients, marketing, and other necessary activities which had to be managed during the process. Each chapter corresponds to one phase of the company startup process and consists from a solved project description, history of that project, management, financing and human resources issues during that phase. Each chapter ends with the evaluation of the phase and shows the possibilities for a follow-up. The Thesis attempts to evaluate the knowledge learned during the study at MFF UK and confronts it with the practical experiences from the view of a company manager. The Thesis tries to indicate possible shortcomings in education of managing officers and to find ways how these shortcomings could be eliminated. The author pretends to make this confrontation with...
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Topological analysis of computer network threats
Řeháková, Jaroslava Antea ; Jirovský, Václav (advisor) ; Trčka, Martin (referee)
To understand overall vulnerability to network attack, one must consider attacker exploits not just in isolation, but also in combination. That is, one must analyze how low-level vulnerabilities can be combined to achieve high-level attack goals. In this project, we describe a tool that implements a topological approach to network vulnerability analysis. Out TAU Model includes modeling of network security conditions and attack techniques with use of preconditions/postconditions dependencies. An important part of TAU Model is The Graph of Dependencies that is used for creating exploit sequences leading to specifics attack goals. This representation enables highly scalable methods of vulnerability analysis, such as discovering security flaws of given network configuration. An important subject of this project is discussion about complexity and stopping of TAU Model computation. We also mention future extension possibilities and technical challenges.
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From software team to software firm
Prokeš, Radovan ; Král, Jaroslav (advisor) ; Jirovský, Václav (referee)
This Graduation Thesis is about a software company start-up from a software development team created during a Project at the Faculty of Mathematics and Physics of the Charles University (MFF UK), to an operating software company which introduces its own products to the European mass market. The author then takes a think about the future of this company. The Thesis describes this process from the side of finances, negotiations with potential investors, company management, project management, software developers' team, human resources, and behavior towards clients, marketing, and other necessary activities which had to be managed during the process. Each chapter corresponds to one phase of the company startup process and consists from a solved project description, history of that project, management, financing and human resources issues during that phase. Each chapter ends with the evaluation of the phase and shows the possibilities for a follow-up. The Thesis attempts to evaluate the knowledge learned during the study at MFF UK and confronts it with the practical experiences from the view of a company manager. The Thesis tries to indicate possible shortcomings in education of managing officers and to find ways how these shortcomings could be eliminated. The author pretends to make this confrontation with...
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The facility of server geolocation
Šurina, Štefan ; Jirovský, Václav (advisor) ; Mišutka, Jozef (referee)
This diploma thesis outlines the methods of server geolocalization, that is, determining the physical location of servers based on network measurements. Especially, it sums up several groups of methods, all more or less usable. What is more, it comprises the implementation of couple of them, mainly those based on round trip measurements from distributed environment of well known data points. According to this, statistical comparison of their ability to geolocate precisely is made. Finally, this thesis also tries to prove theoretically how to pick up geolocation servers in order to minimize the error of potential measurements.
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