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Laboratory scenarios explaining the basics of communication protocols
Pokorný, Karel ; Burda, Karel (referee) ; Jeřábek, Jan (advisor)
The goal of this thesis was to design two complex scenarios with focus on different kinds of transmission in packet-switched networks. First scenario is about ARQ (Automatic Repeat Request) protocols. It consists of introduction to Stop-and-Wait, Go Back N and Selective Repeat protocols and their comparison. Second scenario compares unicast, multicast, broadcast and anycast transmission methods. Both scenarios use applications which can simulate particular methods or protocols. These applications along with virtual environments are used for demonstration of characteristics of these methods/protocols.
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Application for Monitoring of IP Networks
Šmalec, Ondřej ; Malina, Lukáš (referee) ; Hošek, Jiří (advisor)
Diplomová práce popisuje vytvoření aplikace pro monitorování síťových zařízení. Výsledky jsou zobrazené jako grafické uživatelské rozhraní společně s vykreslenou topologií. Aplikace je z velké části napsána v jazyce Python. Pro získávání informací z topologie jsou využity protokoly SNMP a SSH. Hlavní cíl je vytvořit aplikaci, která monitoruje síťová zařízení a vykresluje tuhle topologii do grafického uživatelského rozhraní. Tato aplikace reaguje dynamicky na změny v monitorovací topologii.
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Containerization of Database Detectors
Oberreiter, Michal ; Kočí, Radek (referee) ; Smrčka, Aleš (advisor)
This thesis deals with containerization of command-line applications including containerization of existing tools for database content analysis. The thesis is a part of Testos platform, which aims at software testing automation. The goal was to design and implement a solution that would be both universally usable for command-line applications and at the same time flexible enough to accommodate database detectors and their specific requirements. Docker was chosen as the containerization platform, on which a management system was built. This system provides both a graphical user interface and an application programming interface. The result allows for easy application management and output retrieval. The primary contribution of this thesis is the streamlining and simplification of running command-line applications with specific dependencies. These features come in form of abstracting the underlying mechanisms and providing a graphical user interface.
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Testing Environment via Cluster Solution
Hostačný, Peter ; Kočí, Radek (referee) ; Smrčka, Aleš (advisor)
Testos is a project that aims to create a set of tools supporting automated software testing. One of its components is computational cluster whose main goal is to execute parallel tasks and provide computational resources to other tools in the project. This work details the process of its design, implementation and integration with the Testos project. It is expected that the resulting system will be in use after Testos bus is completed.
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Server Data Monitoring with Android Notification
Bohuš, Michal ; Polčák, Libor (referee) ; Holkovič, Martin (advisor)
Thesis is concerned with server data monitoring, messages generation and mobile application development for receiving notifications from server. Monitoring of the user's selected data takes place on the server. For data monitoring purposes were as source chosen NoSQL databases, SQL database and terminal within OS. Messages are generated based on user's specified rules over the monitored data. They can be sent both to an individual or group of people to e-mail or mobile application. Through the mobile application it is possible to subscribe or unsubscribe to receive messages and view recieved message.
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Analysis of webserver and domain security
Dvonč, Tomáš ; Lieskovan, Tomáš (referee) ; Ilgner, Petr (advisor)
The aim of the bachelor thesis was to analyze the security of web and e-mail servers. The work consists of three parts. The first part describes communication protocols and explains the basic difference between them. The second part describes the history of development of cryptographic protocols which are used to encrypt communication, prevent data capture and manipulation. Furthermore, the security architecture is presented, the way the client-server communication is implemented and the concept of the certification authority is clarified. In addition, the various security mechanisms that provide reliable communication over the Internet will be described. In the third part the main focus is to create a program that would automatically test the security features of the enclosed domain set. The Application was created in the Golang programming language using Docker. The result is security analysis statistics and security errors detection. Based on the data obtained, the user will be provided with current the security status of web and email servers.
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Laboratory scenarios describing DNS system
Sakala, Peter ; Langhammer, Lukáš (referee) ; Jeřábek, Jan (advisor)
The master’s thesis deals with Domain Name System (DNS) and its practical use. It describes hierarchy of domain names, resource record types, protocol used, as well as DNSSEC extension. The most utilized implementations of authoritative and recursive DNS servers are presented. Virtualization, containers and other tools with potential use in labs are described. Two lab scenarios in virtualized environment with instructions for students were designed and developed in this thesis.
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Remote Deployment of InfiSpector
Číž, Marek ; Šimková, Hana (referee) ; Lengál, Ondřej (advisor)
InfiSpector je aplikace, která graficky zobrazuje komunikaci mezi uzly Infinispan serverů. Chceme oddělit infrastrukturu InfiSpectoru od aplikace jako takové. Důsledkem oddělení infrastury InfiSpectoru od samotné aplikace je přenesení veškeré starosti a správy InfiSpectoru z uživatele na vzdálenou internetovou službu, kde bude aplikace běžet na vzdáleném serveru. Uživatel se ke vzdálenému serveru již jen připojí, uživateli odpadne nutnost instalovat aplikaci na svém zařízení, a tak se může místo konfigurace InfiSpectoru soustředit na jeho využívání. Vzdálená internetová služba umožňuje jejímu uživateli sdílet výpočetní prostředky, například servery a aplikace. Vzdálená internetová služba umožňuje i využivání externích internetových uložišť pro vzdálené uložení dat. Tím, že je vzdálená internetová služba volně přístupná na internetu, je i dobře přístupná z každého počítače nebo telefonu s přístupem na internet. Pro InfiSpector byla zvolena na základě výzkumu vzdálená internetová služba zvaná Openshift, umožňující spravovat, vyvíjet a provozovat aplikace. Openshift navíc nabízí testovací účet zdarma pro každého vývojáře.\newline V bakalářské práci se nachází i popis, přehled a nastavení souborů nejen pro části InfiSpectoru zajišťující správu a zpracování dat, ale i pro nasazení, vývoj a provoz InfiSpectoru na vzdálené internetové službě Openshift.
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Using of Linux Containers in Test Fixture
Országh, Marián ; Rogalewicz, Adam (referee) ; Smrčka, Aleš (advisor)
The main focus of this thesis is the study of Linux containers and their application in creation of software test fixtures. The program solution divides the problem into several segments. At first, a configurationisset upin accordance with the user’s specification, next a container is created according to given configuration, and in the end,the created container is launched alongside supplied tests while using the Docker platform. The program itself meets initial requirements although its functionality is not guaranteed as a result of usage of third-party software such as package managers, which may cause unexpected runtime errors. Primary asset of the thesis is the wrapping of the Docker platform to the degree, that its user needs minimal, or no knowledge of the platform, and allows them to create containers in a simplified way
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