In general this master’s thesis deals with access control methods and their individual modules and in particular with authentication of supplicants. There are listed authentication methods useful in the implementation of the ACP protocol. ACP protocol is also discussed including possibilities and uses. ACP message format is described in detail with AVP format and types. The transaction mechanism is also mentioned here. The main part of the thesis is focused on software design for protocol testing. Possibilities of the testing are discussed and test scenarios are suggested. Consequently, requirements for test software are listed and its implementation is designed. Furthermore, there is technical documentation of the program. The main ideas used in the program are explained in it. The purpose of each part of the program is written including links between them. Finally, there is a manual for the program. It also contains an illustrative example describing how to make and test a simple scenario of the authentication.

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ROS is a set of computer operating system framework designed for robot software development, and Red Door, a lightweight software firewall that serves the ROS, is intended to strengthen its security. ROS has many flaws in security, such as clear text transmission of data, no authentication mechanism, etc. Red Door can achieve identity verification and access control policy with a small performance loss, all without modifying the ROS source code, to ensure the availability and authentication of ROS applications to the greatest extent.

<p>The networking field has become a core component for any company. All of the</p><p>businesses rely on the networking industry, due its vastness and significance. Every day</p><p>companies are planning and thinking to develop better strategies that can offer efficient</p><p>and reliable communication solutions between their employees and customers for</p><p>maximum revenue. The planning of a company’s network requires a lot of resources and</p><p>aspects to study, and to evaluate them carefully to build a comprehensive secure and</p><p>reliable platform. It is the job of a network administrator to take care of the company’s</p><p>network infrastructure and upgrade or update the required components and applications</p><p>from time-to-time that can follow new standards.</p><p>This thesis is a practical work aimed to evaluate a company network infrastructure in its</p><p>real environment. The purpose of this thesis is to evaluate different aspects of the</p><p>network infrastructure used such as VPN, WLAN, firewall and physical security and give</p><p>recommendations to make their performance better and to offer more advanced strategies.</p><p>This study will also provide an inclusive observation of the company’s needs and their</p><p>network infrastructure, and will provide a concept how to evaluate and fix small mistakes,</p><p>the kind of problems that can occur in an evolving company network. Lastly, this research</p><p>will make recommendations and suggest a possible implementation on the studied</p><p>network infrastructure.</p>

The networking field has become a core component for any company. All of the businesses rely on the networking industry, due its vastness and significance. Every day companies are planning and thinking to develop better strategies that can offer efficient and reliable communication solutions between their employees and customers for maximum revenue. The planning of a company’s network requires a lot of resources and aspects to study, and to evaluate them carefully to build a comprehensive secure and reliable platform. It is the job of a network administrator to take care of the company’s network infrastructure and upgrade or update the required components and applications from time-to-time that can follow new standards. This thesis is a practical work aimed to evaluate a company network infrastructure in its real environment. The purpose of this thesis is to evaluate different aspects of the network infrastructure used such as VPN, WLAN, firewall and physical security and give recommendations to make their performance better and to offer more advanced strategies. This study will also provide an inclusive observation of the company’s needs and their network infrastructure, and will provide a concept how to evaluate and fix small mistakes, the kind of problems that can occur in an evolving company network. Lastly, this research will make recommendations and suggest a possible implementation on the studied network infrastructure.

The topic of this thesis is focused on the issues of the Identity Management. The author of the work describes the possibilities using this concept and application Identity Management in organizations. This issue is not oriented just from the point of Information security where this area belongs. The goal of this work is to create a framework of the process Identity Management by using best practises and standards. The context of the work should describe new trends and using special tools for safety work with process of Identity Management and the risk in area of the Identity Management. To achieve these goals which are mentioned above is ensured by using analysis of information sources and consulting with professionals from organization. The benefit of this work is provide comparison of teoretical knowledges with practical usage in organization and its recommendation to improve the process Identity Management.

With recent advances in data-as-a-service (DaaS) and cloud computing, outsourcing data to the cloud has become a common practice. In a typical scenario, the data owner (DO) outsources the data and delegates the query processing service to a service provider (SP). However, as the SP is often an untrusted third party, the integrity of the query results cannot be guaranteed and is thus imperative to be authenticated. To tackle this issue, a typical approach is letting the SP provide a cryptographic proof, which can be used to verify the soundness and completeness of the query results by the clients. Despite extensive research on authenticated query processing for outsourced databases, existing techniques have only considered limited query types. They fail to address a variety of needs demanded by enterprise customers such as supporting aggregate queries over set-valued data, enforcing fine-grained access control, and using distributed computing paradigms. In this dissertation, we take the first step to comprehensively investigate the authenticated query processing in the cloud that fulfills the aforementioned requirements. Security analysis and performance evaluation show that the proposed solutions and techniques are robust and efficient under a wide range of system settings.