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Design and implementation of model architecture of MIB system database
Mikulica, Vladimír ; Hošek, Jiří (referee) ; Molnár, Karol (advisor)
The submetted work deals with the systems design and the implementation of the model database MIB. The work is the introduction into the protocol SNMP (Simple Network Management Protocol) and the database MIB (Management Information Base), which describes in detail branch MIB II. This branch is the current standard for the management of objects using SNMP. Consequently, there are explained different data types that the MIB database uses. Furthermore, the work describes the procedures for the design of the database MIB in the language of ASN. 1 according to RFC 2233 and the subsequent transfer of the MIB database, available through the compilers into the langure C. In the following chapters of the work, each of the models that were created in the simulated environment OPNET Modeler during the implementation of a comprehensive simulation scenario are documented more in detail. The above mentioned parts implement the communication between the manager and the agent. The state machine and the individual blocks of the model are described so that it could be later re-assembled by other candidates.
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Monitoring Service Properties of an IPFIX Collector
Kala, Jan ; Žádník, Martin (referee) ; Wrona, Jan (advisor)
This bachelor's thesis addresses possible ways of monitoring IPFIX collector, which is used for the collection of metadata about network traffic. The thesis briefly introduces the pro- blematics of monitoring and describes the current state of IPFIX collector, which is being developed by an organization called CESNET. It also describes service properties, which can be monitored during the process of data collection using the IPFIX protocol. A new plugin is described, which is intended for the collection and the export of service properties. The thesis describes an implementation and contains results of testing of the new plugin.
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Laboratory Monitoring System
Bošeľa, Jaroslav ; Křepelka, Václav (referee) ; Škorpil, Vladislav (advisor)
This bachelor thesis deals with network monitoring solution for school laboratory network. Describes the laboratory network devices, their purpose and condition before applying configuration, it also contains a comparison of commercial supervision network systems and the choice of one that has been used. The essence of the thesis is focused onto SNMP protocol, its use in laboratory network monitoring. In the practical part of the thesis is created the system supervision configuration, which is applied into laboratory network and ensures the supervision and monitoring for whole laboratory network.
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Installation, configuration and testing of server services DHCP, FTP, VPN, NAT and SNMP in IPv4 and IPv6 environments
Brázda, Libor ; Sysel, Petr (referee) ; Novotný, Vít (advisor)
This bachelor thesis focuses on selecting server services such as FTP, DHCP, VPN, NAT and SNMP and their implementation in operating system Windows Server 2008 R2 and linux distribution Debian. The theoretical part analyzes the problems of TCP/IP protocol including addressing in IPv4 and IPv6 environments. In next chapters, thesis contains detailed descriptions of individual services, their principles, security, etc. The last part is focused on the description of the laboratory task, their activities and contribution to student and also software used in the implementation tasks. The result of laboratory work is created job on the configuration of individual services in both operating systems. Tasks are made for students without previous knowledge of the problem, so they can successfully configure and test these tasks.
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Anomaly Detection Based on SNMP Communication
Štěpán, Daniel ; Drga, Jozef (referee) ; Očenášek, Pavel (advisor)
The aim of this thesis was to develop a practically applicable set of methods for classification and detection of anomalies in computer network environments. I have created extensions to the network monitoring system in the form of two modules for an open source network monitoring tool based on machine learning. The created modules can learn the characteristics of normal network traffic. The first module, based on the algorithm Random Forest Classifier, detects and is able to classify several known denial-of-service attacks. The second module, based on the algorithm Local Outlier Factor, detects anomalous levels of network traffic. Attacks that the first module is able to classify are the following: TCP SYN flood, UDP flood and ICMP flood. Moreover, it was trained to detect the SSH Bruteforce attacks and the slow and fragmented Slowloris attack. While working on this thesis, I tested the device using the methods mentioned above. The experiments showed that the classification-based module is able to detect known attacks, except for the Slowloris attack, whose characteristics are not very different from normal traffic. The second module sucessfully detects higher levels of network traffic, but does not perform the classification.
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Monitoring the operation of local internet networks
Papež, Nikola ; Bartl, Milan (referee) ; Verner, Lukáš (advisor)
This thesis deals with issues of traffic monitoring of local internet networks. Attention is paid to describing main functions and methods of network monitoring, consequently standards for monitoring such as SNMP protocol, WMI service or Cisco NetFlow methods. There are also described some other basic tools with open source licence used for monitoring. The main contribution of this thesis is clarification and subsequent usage of these methods for monitoring on VUT network. For this intermediation was used Nagios tool which used Nagios tool which provided feedback about the status of devices together with the own programmed plugin and tool Cacti which collected data from these devices and created graphical dependencies.
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Monitoring Network Trafic of Linux Server
Pospíchal, Petr ; Ščuglík, František (referee) ; Ráb, Jaroslav (advisor)
Today the world is facing a very fast expansion of the Internet. Every day, more and more companies rely on services provided by network connections between computer systems. Enormous growth of data volume being transferred also requires more sophisticated systems. Thus it's more complicated to maintain the whole tree of network systems. Key issue to maintain reliability of services and profit, is to have perfect overview of each entity's availability. In a world where most of important systems are being run on UNIX-type operation systems is good to have a tool which allows easy access to information related to a system. The topic of this Bachelory work is to describe both concept and implementation of such tool.
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Implementation of service functions for work with MIB database in simulation environment OPNET Modeler
Ruml, Martin ; Skořepa, Michal (referee) ; Molnár, Karol (advisor)
Implementation of service for work with MIB database is subjeckt the bachelor’s thesis. MIB database is system database which is instrumental for storage of control informations in network elements. A first chapter is instrumental like a introduction to the control computer networks. A second chapter describes the basic features of protocol SNMP. The protocol SNMP is a standardized application protocol which uses for a transmission control informacions from and to the system database MIB. The protocol is based on a draft manager-agent when the manager is mostly active who enquire of the agent for the values of concrete items. A next chapter deals with a structure and standards for the MIB database. It describes a basic enbranchment among the administrative organizations. A main part of working is devoted to a proposal and a implementation of servece functions MIB database. The main requirements for the MIB database in light of a cooperation with the protocol SNMP are identified in this chapter. These processes are trained-in to the experiment implementation of MIB database. The implementation is written in C++. A header file of the classes and supportive functions who implement basic mechanisms of MIB database and its methods for a tender the database created from the proposal. The header file contains the several processes for an easement of cooperation MIB database with the application protocol SNMP, too. A final chapter shows the using of designed classes. The created programe is equipped with a graphics interface who uses the functions for a local access. Very easy modul for the comunication with the database through the messages of SNMP is among next shown functions in the programe.
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