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System for semi-automatic documentation of computer networks
Švik, Ondřej ; Heriban, Pavel (referee) ; Roupec, Jan (advisor)
This thesis addresses the issue of semi-automatic documentation of computer networks. The main objective is the development of an application that streamlines and facilitates the management of network devices and their documentation. The thesis includes an analysis of current commercial and open-source network management solutions. The theoretical part describes the basic concepts of computer networks, their topologies, and network protocols, particularly the Simple Network Management Protocol (SNMP). The application is designed for use in the faculty network, with a chapter in the theoretical part dedicated to describing this network. The practical part focuses on the design and implementation of a web application using a client/server architecture, which enables automatic network mapping, device management, topology visualization, and includes an interactive map of the faculty.
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Creating a simulation model of the access network
Formánek, Juraj ; Slavíček, Karel (referee) ; Grenar, David (advisor)
Thesis deals with generating and monitoring traffic in the GNS 3 simulation tool. The properties of the GNS 3 simulator are defined, including its capabilities for simulating/emulating components. Emphasis is placed on using only open-source tools. After analyzing the capabilities of GNS 3, a suitable traffic generator is found, which is preceded by practical testing of multiple generators. After finding the generator, monitoring tools are practically tested, with Zabbix emerging as the best from the tests. It was linked with the visualization tool Grafana through Zabbix plugin. Part of the work consists of automation, managed by Zabbix along with bash/Python scripts. The thesis evaluates the use of GNS 3 and explores its capabilities, possibilities, and limitations in the area of traffic monitoring and generation. The result is the creation of an access network with one router and two containers that generate and send traffic through this router. Everything is monitored by Zabbix and useful results are displayed in Grafana.
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Finding the network architecture for alarm transmission system LAN-RING
Mikšíček, Pavel ; Marada, Tomáš (referee) ; Zuth, Daniel (advisor)
This master’s thesis deals with a complex solution for the visualization of network topology. The first part of thesis describes the operation principle of LLDP protocol, which was chosen as a tool for retrieving informations from network traffic based on the requirement of the assignment. There is a detailed description of the LLDP protocol implementation in C language to METEL s.r.o. network products. The second part deals with possibilities of graphical interface in software SIMULand intended for managing network devices. It describes tools expansion process for the visualization of the network topology. In conclusion, the results of testing final solution are introduced.
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Monitoring Hybrid Net Infrastructure
Janda, Martin ; Plchot, Oldřich (referee) ; Smrž, Pavel (advisor)
This bachelor thesis follows developement of automatic monitoring system of devices in hybrid network for SELF servis company. System's purpose is to check availability by ICMP packets and to watch values by SNMP protocol. In this text you'll find description of requirements analysis, design of the system and implementation. In the last chapter follows results from real use and ideas for further development.
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Automation of MIB Files Import
Kožušník, Adam ; Bartík, Vladimír (referee) ; Kreslíková, Jitka (advisor)
This diploma thesis is about an automation of importing MIB files into MIB database. This work is written for SolarWinds company. The goal is to analyze current process of importing MIB files. Than design changes of existing tools for their use in the automation. Also design new tools, if they are needed. Designed system will be implemented in required programming language with suitable technologies. There will be consultations with responsible person from SolarWinds company during the whole work.
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Managing Mobile IP enabled networks with SNMP protocol
Závodný, Ondřej ; Vajsar, Pavel (referee) ; Skořepa, Michal (advisor)
The content of this thesis is to research possibilities of using SNMP for management of Mobile IP activated entities. The first two chapters deal with theoretical analysis of Mobile IP protocol, and Simple Network Management Protocol. The Mobile IP protocol analysis focuses especially on the elements Home agent and Foreign agent. In the SNMP chapter the analysis focuses mainly on ways to exchange messages. Another part of the document is devoted to a description of laboratory networks com- posed of routers Cisco 1841 and the configuration of them. Finally is described the programmed application to manager these devices in JAVA, which is included in Annex. The program periodically sends SNMP queries and finds relationships between the Home agent and the mobile nodes, and between the foreign agent and the mobile nodes. The application has a user-friendly interface that is shown on the attached flash animation. Finally, the thesis summarizes the concepts described in previous chapters and the goals to achieve.
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Cyberattack generator
Gajdušek, Ondřej ; Jeřábek, Jan (referee) ; Hajný, Jan (advisor)
This work deals with the enhancement of software which generates cyberattacks. These enhancements are focused on application layer of ISO/OSI model. The firsh part of the work contains general description of cyberattacks. Concrete attacks which this work is dealing with are described more concretely. Next part deals with describing generator software and its enhancement. The last part is describing testing of newly implemented cyberattacks.
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Monitoring of Ethernet network
Herman, Vít ; Hošek, Jiří (referee) ; Jeřábek, Jan (advisor)
The bachelor thesis deals witch possibility of monitoring active items of Cisco Company, VLAN networks built between them and utilization of particular lines. All the information about items is stored in MIB database. Designed and then implemented system uses pooling MIB database using SNMP protocol, to obtain required information. For application SNMP protocol, programming language Perl is used. Obtained and processed data are stored in MySQL database. Designed system is not dependent either on any platform or this implementation. All the technologies and tools used described in the thesis. In the thesis there is described and shown, how is possible pooling items including results of pooling.
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