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Technology for comprehensive support of multimedia services in heterogeneous networks
Dosoudil, Petr ; Krkoš, Radko (referee) ; Novotný, Vít (advisor)
The theses explains the Evolution Packet System (EPS) and subsystem IP Multimedia Subsystem (IMS). It also informs how these systems cooperate and through which interfaces the main data and signals between these two technologies are transfered. The thesis includes practical section, in which installation and configuration of sections of the IMS system including its "core", and application and medial server. For verification of the functionality of the system, two dissimilar clients are installed, and emulator WAN is applied for simulation of Internet. The product of the theses is the design of the laboratory exercise drafted in such a way that it can be solved by students less knowledgeable of the issues.
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Acquisition of communication statistical data from network infrastructure devices
Gargulák, Lukáš ; Nagy, Ľuboš (referee) ; Krkoš, Radko (advisor)
The diploma thesis describes theory that is needed for application development for acquisition of communication statistical data from network infrastructure devices. Aplication is called SDSKSI. The project compares protocols suitable for this purpose. Finally SNMP protocol was chosen because it is the most common in network devices. SNMP is described in detail. Each SNMP operation has its own practical demonstration. In the project there is also described MIB database and data types of MIB objects. Application is able to create network topology. Then administrator of network can imagine how the network looks like. For each device that support SNMP protocol are periodically collected and stored statistical data which can be exported to the file. For application development were chosen programming languages according to several criteria. Content of the laboratory exercise is presented. At the end of the project there are some system solutions for collecting statistical data. Diploma thesis contents two attachments. The first is containing the full text of laboratory task. The second is DVD disc. Disc is containing ready to boot aplication SDSKSI.
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Control of electronic systems via web interface
Dufek, Ladislav ; Šilhavý, Pavel (referee) ; Zeman, Václav (advisor)
This master thesis goes into problematics of design of an electronic device control system and its realization. First of all its overall conception is specified and potential hardware platforms are analyzed afterwards. Based on this analysis the system’s final conception is drawn up, the device’s circuit layout is created and finally a functional prototype is manufactured. The later part of this thesis describes the software accessories and tools. The principles of a chosen operating system, management application and webbased interface are described along with the problems of authentization to solve. The proposed solutions for the authentization-specific tasks gave rise to the final implementation of the authentization methods and techniques.
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Proxy firewall
Kugler, Zdeněk ; Pelka, Tomáš (referee) ; Pust, Radim (advisor)
This diploma thesis deals with the topic of proxy servers and firewalls and considers other associated technologies and network techniques. It systematically describes the general issues of firewalls, with a special focus on proxy firewalls and their safety. Additional systems mentioned in this document are intrusion detection systems (IDS), antivirus systems and content control filters – as these are also connected with safety of networks, servers and workstations or with limiting various Internet sources. IDS systems can be typically supplemented with various additional applications or tools that enrich them and increase their potential – including graphic additions. This part is remembered too. Some systems can communicate with each other, which is successfully utilised (FW & IDS co-operation, for example). The purpose of the first large chapter is to present firewall technologies, to list firewall types, their basic functionality and to present the final comparison. It marginally mentions firewall applications in practice. Chapter two explains the theory of network address translation (NAT), deals with its functionality, safety and with limiting the NAT mechanism. Chapter three brings a comprehensive presentation of proxy servers. It explains their principle from the point of view of functionality and the specification of application areas. The chapter is complete with a clear list of proxy server types and their descriptions. The last chapter named Linux Proxy Firewall is the key part of the work. It deals generally with the Linux platform, the Debian GNU/Linux distribution, principles of safety policy, network configuration, network server safety, Linux firewalls (Netfilter framework, Iptables tool) and with the Squid proxy server. The following subchapters respect the previous structure: they describe the theories of intrusion detection systems, antivirus checks and content filtering based on different methods. All this is presented similarly to the previous chapters. A proxy firewall solution built on the Linux operating system has been proposed in the practical part. The Debian GNU/Linux distribution has been chosen, being very suitable for server use due to its features. This environment is also used for additional safety software contained in the proxy firewall: antivirus protection, content filtering and an intrusion detection system. The priority is the most comprehensive computer network security, which requires detection abilities with the broadest possible coverage in the area of network safety. The purpose of this diploma thesis is not only to describe the principle of operation of proxy servers and to compare them with other types and other systems, but it also brings my own proposed free solution, which increases network safety and has the ambition of comparing it with clearly commercial products available on the market.
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Universal linux server for small and medium companies enabling simple network control
Juřena, Stanislav ; Pust, Radim (referee) ; Burda, Karel (advisor)
The main object of this thesis was to design a computer network for small and medium companies which will be made among others from network server providing simple network control. The next task was to provide internet connection to subscribers of local area network, their security and access to common services. There had been discussed the choice of distribution of Linux operation system with regarding to demanded services, stability and long lasting operation in theoretical part. One part of the work is a theoretic preliminary to separate services, to the purpose of their using and to their weaknesses. The practical part deals with an installation and configuration of Debian operating system, launching the base services and the setting of selected monitoring programs.
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Příprava a provedení analýzy poštovních konferencí Debianu
Buriánek, Jan ; Bruckner, Tomáš (advisor) ; Jelínek, Ivan (referee)
This bachelor thesis is devoted to techniques and technologies within area of unstructured data processing. This processing includes building an infrastructure to make it feasible and obtaining data of all Debian mailing lists contents. In order to fullfil the main goal of this thesis, there has been downloaded entire content of Debian mailing lists. Debian mailing lists are a valuable source containing information about the Debian operating system and its software components. It proves that its software components are well-made reliable open-source tools. It is expected that this source of data is able to unveil plenty of unexpected relations. Used data and technologies as the Elasticsearch search and analysis engine are excelent tools and resources to conduct research over such type of comparism of mind and computer outputs as in case of Searle's axioms from article "Is Brain's mind a computer program?". This thesis is attempting to prove that such analysis is feasible.
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Případová studie podpory mobility u IPv6
Stratil, Jakub
This thesis includes information about important properties and functions of the IPv6 protocol with the main focus on the mobility mechanism. Practical part consist of network topology design and implementation, testing IPv6 mobility configuration on actual devices in laboratory enviroment.
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Creation of router based on Linux
SUDA, Jiří
This thesis describes routers in general and their variants as well as the creation of my own PC issues linux-based router variant. It states pros and cons of this solution in detail. The administration and security are also mentioned.
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WWW server on Linux Debian platform
Dočekal, Michal ; Rydzi, Daniel (advisor) ; Kyndl, Petr (referee)
Bakalářská práce se zabývá postupem vytvoření webového serveru realizovaného na operačním systému Debian GNU/Linux. Provádí čtenáře procesem instalace operačního systému a konfigurace webového serveru a všech souvisejících komponent. Zahrnuje základy správy server a jeho zabezpečení a porovnává přínosy a nevýhody provozu vlastního webového serveru oproti webhostingu.
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