Att skydda sin information mot offline-attacker och stöld kan vara önskvärt, därför kan man använda sig utav filsystemskryptering. Den här studien är en prestandatestning av de tre olika kryptoprogrammen BestCrypt, BitLocker och DiskCryptor, som krypterar filsystemet. Resultaten syftar till att ge en fingervisning av vilket kryptoprogram man bör välja. Detta tydliggjordes när testerna visade att filsystemskryptering påverkar responsen hos Apache och FileZilla och att de påverkades olika mycket beroende av kryptoprogram. / To protect data against offline-attacks and theft, which might be desirable, one can encrypt the filesystem. This study is a performance test of the three different encryption programs BestCrypt, BitLocker and DiskCryptor. Results of the study aims to give a pointer to which encryption program one should choose. This was clear when the tests showed that the encryption affected the response of the services Apache and Filezilla and that they were affected differently depending on which encryption program that was used.

This work discusses about configuration and integration of Single Sign On against to Active Directory which serves as an authorization into web applications for Air Navigation Services, CZECH REPUBLIC by company Ifield Computer Consultancy Limited. Part of the work is performed the results of testing of the performance these two type of implementations for two different applications. For the theory part I've been using relevant literature, but for some tools, namely Scimark and JMeter, there is none, so I had to settle with internet sources. The main benefit of this thesis is the result of testing of comparison two different implementations of the Single Sign On generated using NTLMv2 and SPNEGO/Kerberos.

The aim of this project is to develop a component able to retrieve taxi providers in Sweden, based on input of coordinates and a search radius. The result should be available in a well-structured and accessible way through an RESTful web service. The study is conducted based on a customer inquiry stating that the component should be built using open-source tools and be developed in such a way that allows the component, or parts of the component, to be integrated in a larger system. Therefore, a preliminary study was conducted in order to find suitable open-source tools that are able to solve the specific customer requirements. The component uses an ad hoc company search engine to retrieve the taxi providers, contact information and coordinates. Additional information needed for determining the correctness of the taxi providers are retrieved from external resources and a filtering process is then performed before they are saved in persistent store. The project is successful in solving the main purpose and most of the customer requirements, while the RESTful service is unable too fully meet the requirement stating that the component should be able to handle multiple concurrent clients while still maintain responsiveness. This, is mainly due to the decision not to use an ad hoc framework in handling geospatial data structures and calculations and was a trade-off to ensure re-usability and integration of the component in a larger system. / Avsikten med denna studie är att bygga en komponent som kan returnera taxiföretag i Sverige baserat på koordinater och en sökradie. Resultatet skall presenteras för användare eller andra tjänster på ett välstrukturerat och tillgängligt sätt via en RESTbaserat webbtjänst. Projektet är ett resultat av en kundförfrågan i vilken det även specificeras att komponenten skall använda sig av data eller verktyg som är fritt tillgängliga och att den skall vara byggd på ett sådant sätt att det går att använda hela, eller delar av, komponenten i ett större system. En kortare förstudie genomfördes med syfte att hitta lämpliga verktyg som bygger på öppen källkod för att lösa de specifika krav kunden ställt på komponenten. Komponenten använder sig av en sökmotor för företag-sök där resultaten görs tillgängliga via ett RESTbaserat API. Varje företag genomgår sedan en filtreringsprocess innan de sparas i databas för att avgöra om det uppfyller de kriterier som är uppsatta. Denna filtrering baseras på information som inhämtats genom en automatiserad process. Denna studie har varit framgångsrik i avseendet att bygga en komponent som kan returnera företag inom ett visst område baserat på koordinater och en given sökradie. Den uppfyller även de allra flesta av de krav kunden har satt upp, med undantag för det krav som efterfrågar en responsiv hantering av många samtidiga användare. Detta beror främst på valet att inte använda sig av ett ramverk avsett för hantering av geospatial data. Detta var en avvägning som gjordes för att försäkra sig om att komponenten skulle vara återanvändbar i ett större system.

Vill man bygga en API tjänst idag existerar det en mängd olika ramverk att välja mellan, varav några av dessa använder reaktiva system. Denna teknik tillåter värden att använda sina resurser på ett mycket mer effektivt sätt än med de icke reaktiva ramverken. Två ramverk som kan användas för att utnyttja denna teknik är Spring Boot och Quarkus. Spring Boot är ett väl etablerat API ramverk med mycket inbyggd funktionalitet som hjälper utvecklare att bygga robusta API tjänster. Quarkus å andra sidan är ett nyare ramverk med fokus på att vara en liten och lätt API som är främst för containers. Även fast dom fokuserar på olika saker borde dom i slutet presentera på samma nivå och ge snarlika resultat. Målet med denna studie är att jämföra reaktiva API tjänster med icke-reaktiva API tjänster med hjälp av Spring Boot och Quarkus. Samt svara på frågor om vilket ramverk och teknik som är den bästa för olika scenarion. För att få kunskap om ämnet om reaktiva system gjordes det först en teoretisk studie för att veta vad som definierar ett reaktivt system samt vad som krävs av operativsystemet för att exekvera en sådan tjänst. För att kunna utföra jämförelsen byggdes det en reaktiv samt icke-reaktiv variant av de två olika ramverken som ger totalt fyra applikationer att jämföra. Flera olika tester var byggda och exekverade på de fyra olika applikationerna. Resultaten visade att reaktivt Quarkus var överlägsen jämfört med de andra applikationer när storleken på transaktionerna var små. I de fall att transaktionerna var stora eller behövdes behandlas var istället Spring Boot bättre. Jämförelsen av CPU- och minnesanvändning resulterade i att reaktivt Quarkus använder både mindre minne och använder mindre CPU. / As technology evolves, more and more companies strive to automate as much work as possible. The use of chatbots in messaging apps is becoming more and more common as replacements in the operation of customer service because of the efficiency and reliability it poses. Replacing customer service with chatbots also saves companies money. In this paper an IT company have asked for the implementation and proof of concept of integration between their server-side application, to Microsoft Teams. They want it to be possible to use a chatbot in Teams to send tickets containing data to their system in order to be handled by users of their application. In this paper a solution to this problem is described as well as discussions about the chosen implementation. The discussion is focused on the final solution, user tests, related work, ethical issues as well as future work. User tests of the implemented solution are included in the results. The conclusion of the work is that this implementation is useful and saves time and effort both for the customer and the employees. There is much potential for future work to be expanded upon, including specialized Ticket Forms and implemented AI.

The thesis deals with function and structure of web applications, describes the individual technologies used in these applications. It also explains how to create for the purpose of high efficiency and easy development. The main part presents technologies to speed up the applications, explain their settings and properties. Finally, the technologies are thoroughly tested, evaluated benefits of use and recommended the application for future development.

Digital services involving large systems with multiple users are ubiquitous in modern society. The systems are often complicated and made up of multiple devices and communication protocols. A fundamental problem in this context is how the behavior of a system changes as the number of users vary. In particular, when do the systems’ resources saturate and how does the system behave when close to saturation. Performance testing is key for addressing this fundamental problem. Performance testing is the scope of this project. Performance tests can be used for inference of, for example, a system's scalability. Furthermore, it can be used to provide general guarantees on the services that can be delivered. Performance testing at the company Phoniro AB is considered. The platform Phoniro Care is the back-end service for the company’s products. The Phoiro 6000 system is one of the products that uses Phoniro Care. The system allows for multiple users and offers alarm services. The primary focus of this project is to determine the behavior of that system during varying levels of simulated load, and furthermore analyze the data extracted from such simulations and tests. The open source software JMeter was used as the tool for performance testing. It was selected from a set of candidate tools that have been evaluated in the literature based on various performance criteria. The results are presented by graphs showing the time evolution of different performance indicators. A conclusion from this work is that the implemented performance testing framework helps to answer questions about the systems’ behavior. Questions that are important for the company’s further development and expansion of the system. Furthermore, the proposed framework establishes a foundation for further inquiries on the subject.

Performance Testing is one of the crucial parts of any software cycle process. In today’s world, there is any number of network-based applications. Manual Testing and Automated Testing are the two important ways to test any type of application. For Manual Testing a mobile application known as BlekingeTrafiken is used. For Automated Testing, a web application known as Edmodo is used. Selenium is the automated tool included for automated testing. But, for each application, there are several users and because of that, there might be a decrease in performance of the application as an increase in the number of users. Performance of an application also depends on response times, mean, stability, speed, capacity, accuracy. The performance also depends on the device (memory consumption, battery, software variation) and Server/API (less no of calls) and depends on the network performance (jitters, packet loss, network speed). There are several tools for performance testing. By using these tools, we can get accurate performance results of each request.  In this thesis, we performed manual testing of a mobile application by increasing the number of users under similar network conditions, automated testing of a web application under various test cases and tested the performance of an iPad application (PLANETJAKTEN). It is a real-time gaming application used to learn mathematics for children. Apache JMeter is the tool used for performance testing. The interaction between the JMeter tool and the iPad is done through HTTP Proxy method. When any user starts using the application, we can measure the performance of each request sent by the user. Nagios is the tool used to monitor the various environments. Results show that for manual testing, the time taken for connecting to WI-FI is low compared to opening and using the application. For automated testing, it is found that the time taken to run each test case for the first time is high compared to the remaining trials. For performance testing, the experimental results show that the error percentage (the percentage of failed requests) is high for logging into the application compared to using the application.

This thesis discusses the load testing tool JMeter and its opportunities for expansion by modules carrying out cyber attacks of the type Denial of Service (DoS). To begin with, there is a theoretical overview of cyber attacks of this type. The following chapter, talks about the JMeter tool, namely its functions and expansion options. After that, it is proceeded to the actual design and realization of the modules. The module implementing the attack HTTP Flood is created first. This module uses internal functions of the program JMeter. This new module is tested. Next chapter folows the procedure of creating modules, that use external generator of network traffic. Modules SYN Flood, ICMP Flood and NTP Flood are implemented using the generator Trafgen. Module implementing attack Slowloris uses a Python script as a generator of the attack. Finally, all the new modules are tested.

The diploma thesis deals with the development of a tool for automated generation of load testing reports, which is implemented in the form of a plug-in into the load tester JMeter as one of its components. The theoretical part contains an analysis of load testing and DDoS parameters, which are the output of a web report. The thesis includes an analysis of available template processors. Based on the analysis of processor’s properties, the most appropriate one was chosen. This processor was then used in a tool that, using the web technologies, generates a report in a form of interactive web page. The thesis also mentions the installation and operation of the created JMeter software plug-in. The diploma thesis describes the whole process of the development of the plug-in.

The diploma thesis deals with network infrastructure load testing. It’s target is to design and implement a network probe which will be in a form of JMeter plugin one of the components in load tester project. It offers sufficient theoretical basis about load testing, analyzes different types of DoS which can be used to stress the tested infrastructure and also discusses some solutions for load testing realization used in practice. Following is a study of possible ways for realization of the probe with help of several open-source tools. The suitability of individual tools is evaluated from the point of view of the network probe requirements and then the most suitable ones are selected as the basis for it’s implementation. Then, a network probe design is constructed in which it’s functionality is divided into two separated plug-ins, a network probe itself and a server emulator, and the implementation phase is commenced. The implementation is done in Java programming language to allow the new components to use all the neccessary JMeter API functions. The structure of individual parts of the modules as well as many implementation details are analyzed thoroughly in the text. The final chapter of the thesis describes function of the newly created components. After their installation into the load tester the procedure and the results of the functional testing are presented. This thesis describes the whole process of developing a plug-in for JMeter software.