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Networking Subsystem Configuration Interface
Lichtner, Ondrej ; Grégr, Matěj (oponent) ; Ryšavý, Ondřej (vedoucí práce)
The goal of this thesis is to design a network configuration library with regards to operating system portability and extendability of supported features. To achieve this portable design the thesis explores and analyses the currently available network configuration options of Linux and BSD based operating systems and commonly used network devices. It provides and indepth description of Netlink sockets on Linux as the primary network configuration interface, and ioctl system calls that are used on BSD systems. The gathered information is used to create a portable and extendable library design that separates the configuration interface from its implementation into a hierarchy of abstract classes. Furthermore the class LibNCFG is defined as the entry point of the library which handles object creation and destruction instead of the user. This design provides a high level of extendability and ease of use at the same time. The thesis also describes the chosen parts of the library that were implemented so far. The thesis also describes a simple application that was created to showcase the ease of use of the created library. In the end the library summarizes achieved results and discusses possible improvements and continuation of the project.
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WAN/LAN Manager for iOS
Jakubis, Tomáš ; Široký, Vít (oponent) ; Maršík, Lukáš (vedoucí práce)
The goal of this project is to create an application for iOS to manage network devices, clients and device configurations. This includes project analysis, application design, implementation and testing. Application consists of client's side, server's side, database and communication protocol. The resulted application is then compared with existing solutions with similar results. Test results have revealed several weaknesses and drawbacks of the solution. Possible improvements and future development have been described. As conclusion, the application may have potential to be used in practice after more development.
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Network-wide Security Analysis
de Silva, Hidda Marakkala Gayan Ruchika ; Šafařík,, Jiří (oponent) ; Šlapal, Josef (oponent) ; Švéda, Miroslav (vedoucí práce)
The objective of the research is to model and analyze the effects of dynamic routing protocols. The thesis addresses the analysis of service reachability, configurations, routing and security filters on dynamic networks in the event of device or link failures. The research contains two main sections, namely, modeling and analysis. First section consists of modeling of network topology, protocol behaviors, device configurations and filters. In the modeling, graph algorithms, routing redistribution theory, relational algebra and temporal logics were used. For the analysis of reachability, a modified topology table was introduced. This is a unique centralized table for a given network and invariant for network states. For the analysis of configurations, a constraint-based analysis was developed by using XSD Prolog. Routing and redistribution were analyzed by using routing information bases and for analyzing the filtering rules, a SAT-based decision procedure was incorporated. A part of the analysis was integrated to a simulation tool at OMNeT++ environment. There are several innovations introduced in this thesis. Filtering network graph, modified topology table, general state to reduce the state space, modeling devices as filtering nodes and constraint-based analysis are the key innovations. Abstract network graph, forwarding device model and redistribution with routing information are extensions of the existing research. Finally, it can be concluded that this thesis discusses novel approaches, modeling methods and analysis techniques in the area of dynamic networks. Integration of these methods into a simulation tool will be a very demanding product for the network designers and the administrators.
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Multiplatformní aplikace pro správu síťových prvků Mikrotik
Bárdossy, Adrián ; Frolka, Jakub (oponent) ; Krajsa, Ondřej (vedoucí práce)
Diplomová práca obsahuje popis vývoju aplikácie na správu sieťových prvkov mikrotik. V úvodnej časti práce sa nachádza popis použitých knižníc, popis API. V ďalšej časti práce sa nachádza naprogramovaná časť backendu aplikácie. Táto časť obsahuje popis jednotlivých zložiek projektu napísaného v programe pycharm. Každá zložka je popísaná jedným súborom a jedným UML diagramom spoločne s tabuľkou metód v triede. V ďalšej časti práce je popis grafickej časti aplikácie, a jej príklad na jednej sekcii naprogramovaných tlačítok. Obsahuje tiež výstup v podobe obrázkov z aplikácie. V poslednej časti práce je návod na nainštalovanie potrebných modulov na spustenie aplikácie a obsahuje tiež manuálne testovanie aplikácie.
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WAN/LAN Manager for iOS
Jakubis, Tomáš ; Široký, Vít (oponent) ; Maršík, Lukáš (vedoucí práce)
The goal of this project is to create an application for iOS to manage network devices, clients and device configurations. This includes project analysis, application design, implementation and testing. Application consists of client's side, server's side, database and communication protocol. The resulted application is then compared with existing solutions with similar results. Test results have revealed several weaknesses and drawbacks of the solution. Possible improvements and future development have been described. As conclusion, the application may have potential to be used in practice after more development.
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Multiplatformní aplikace pro správu síťových prvků Mikrotik
Bárdossy, Adrián ; Frolka, Jakub (oponent) ; Krajsa, Ondřej (vedoucí práce)
Diplomová práca obsahuje popis vývoju aplikácie na správu sieťových prvkov mikrotik. V úvodnej časti práce sa nachádza popis použitých knižníc, popis API. V ďalšej časti práce sa nachádza naprogramovaná časť backendu aplikácie. Táto časť obsahuje popis jednotlivých zložiek projektu napísaného v programe pycharm. Každá zložka je popísaná jedným súborom a jedným UML diagramom spoločne s tabuľkou metód v triede. V ďalšej časti práce je popis grafickej časti aplikácie, a jej príklad na jednej sekcii naprogramovaných tlačítok. Obsahuje tiež výstup v podobe obrázkov z aplikácie. V poslednej časti práce je návod na nainštalovanie potrebných modulov na spustenie aplikácie a obsahuje tiež manuálne testovanie aplikácie.
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Network-wide Security Analysis
de Silva, Hidda Marakkala Gayan Ruchika ; Šafařík,, Jiří (oponent) ; Šlapal, Josef (oponent) ; Švéda, Miroslav (vedoucí práce)
The objective of the research is to model and analyze the effects of dynamic routing protocols. The thesis addresses the analysis of service reachability, configurations, routing and security filters on dynamic networks in the event of device or link failures. The research contains two main sections, namely, modeling and analysis. First section consists of modeling of network topology, protocol behaviors, device configurations and filters. In the modeling, graph algorithms, routing redistribution theory, relational algebra and temporal logics were used. For the analysis of reachability, a modified topology table was introduced. This is a unique centralized table for a given network and invariant for network states. For the analysis of configurations, a constraint-based analysis was developed by using XSD Prolog. Routing and redistribution were analyzed by using routing information bases and for analyzing the filtering rules, a SAT-based decision procedure was incorporated. A part of the analysis was integrated to a simulation tool at OMNeT++ environment. There are several innovations introduced in this thesis. Filtering network graph, modified topology table, general state to reduce the state space, modeling devices as filtering nodes and constraint-based analysis are the key innovations. Abstract network graph, forwarding device model and redistribution with routing information are extensions of the existing research. Finally, it can be concluded that this thesis discusses novel approaches, modeling methods and analysis techniques in the area of dynamic networks. Integration of these methods into a simulation tool will be a very demanding product for the network designers and the administrators.
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|
|
Networking Subsystem Configuration Interface
Lichtner, Ondrej ; Grégr, Matěj (oponent) ; Ryšavý, Ondřej (vedoucí práce)
The goal of this thesis is to design a network configuration library with regards to operating system portability and extendability of supported features. To achieve this portable design the thesis explores and analyses the currently available network configuration options of Linux and BSD based operating systems and commonly used network devices. It provides and indepth description of Netlink sockets on Linux as the primary network configuration interface, and ioctl system calls that are used on BSD systems. The gathered information is used to create a portable and extendable library design that separates the configuration interface from its implementation into a hierarchy of abstract classes. Furthermore the class LibNCFG is defined as the entry point of the library which handles object creation and destruction instead of the user. This design provides a high level of extendability and ease of use at the same time. The thesis also describes the chosen parts of the library that were implemented so far. The thesis also describes a simple application that was created to showcase the ease of use of the created library. In the end the library summarizes achieved results and discusses possible improvements and continuation of the project.
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