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Automation of MitM Attack on WiFi Networks
Vondráček, Martin ; Lichtner, Ondrej (referee) ; Pluskal, Jan (advisor)
Tato bakalářská práce se zaměřuje na výzkum v oblasti bezpečnosti bezdrátových sítí. Práce přináší studii široce využívaných síťových technologií a principů zajištění bezpečnosti bezdrátových sítí. Analyzované technologie a způsoby zabezpečení trpí slabinami, které mohou být zneužity k provedení útoku MitM . Práce zahrnuje přehled dostupných nástrojů zaměřených na využití jednotlivých slabin. Výsledkem této práce je balíček wifimitm a CLI nástroj, oba implementované v jazyce Python. Balíček poskytuje funkcionalitu pro automatizovaný útok MitM a může být použit jako součást dalšího software. Nástroj wifimitmcli je schopen úspěšného provedení plně automatizovaného útoku bez jakéhokoli zásahu útočící osoby. Tento výzkum nachází využití v oblasti automatizovaných penetračních testů a forenzního vyšetřování.
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lmprovement Proposal of Network Services Model for Techniserv IT s.r.o. company
Lavický, Jindřich ; Hanzlík, Jiří (referee) ; Ondrák, Viktor (advisor)
The bachelor thesis describes a proposal of network services model for Techniserv IT s.r.o. company. It analyses the present state of IT infrastructure in organization and suggests appropriate and economical solutions. It describes constituent areas of network services and their advantages. In detail, it focuses on the area of network services implementation, which is crucial for this type of work. At the end, it proposes solutions and evaluates their assets for a company.
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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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Hotelnet Information System
Šturala, Aleš ; Rychlý, Marek (referee) ; Masopust, Tomáš (advisor)
The main objective of my work was to create a system administered over the web interface, where administrators may control users and computers in a small-area network (max. 250 computers). The system is modular to meet requirements of different networks and is administered over the web interface. A part of the whole system is created by PHP scripts for a Linux router, which are connected to the database and can set the router. Users have assigned rights to access to different parts of the system. The system was developed in common technologies like database system PostgreSQL, script language PHP, and mark-up language HTML.
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System for Remote Monitoring of Electrical Values
Kvasnička, Pavel ; Kněžík, Jan (referee) ; Drahanský, Martin (advisor)
The work deals with the measurement of electrical quantities, distribution of data across the Ethernet network into the Internet and intelligent selection of the required values to be transmitted and stored on a central node. The work describes the communication protocols in scale that is necessary for implementation, discussed the requirements for computational resources and microcontroller control is proposed by flowcharts. Attached are source codes in C programming language for microcontroller and PHP scripts for storing and presenting data on Web server.
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Automatic configuration of intermediate networking devices used in Cisco academy
Verner, Lukáš ; Jeřábek, Jan (referee) ; Komosný, Dan (advisor)
his semestral´s thesis deals with proposal and system implementation for automatic configuration of Cisco network devices. This system is called AutoConf and it is intended for distant copying configuration files from eagle-server to the switches and routers in Cisco academy laboratory. It is handled by web pages placed on eagle-server. In this system, user can create new laboratory exercises with configuration files for network devices and then these files could be used for configurations. Informations about done configurations are saved in relation database MySQL. Network devices which will be configured by system AutoConf have to be connected with eagle-server. To setup their connection settings was created decision-making mechanism. If it detects physical connection between network device and eagle-server before network device starts, it will set network device for communication with eagle-server.
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Kernel module definition and networking server configuration for Linux operating system
Pecho, Ladislav ; Matocha, Tomáš (referee) ; Komosný, Dan (advisor)
The goal of my work is to create two computer labs lessons. The first one is a guide in writing a simple Linux kernel module, and in making a file inside the procfs filesystem. The content of the file can be decided as late as at the moment of reading. The second lesson describes the configuration of a server which allows a computer to boot over network. DHCP server is used with a TFTP server for file transfers which are both handled by the dnsmasq program. The example configuration will display a menu on the client station. It is possible to select to boot either a Linux kernel, floppy disk image, Linux network installer, diagnostic tool Memtest, or a text mode game Grub Invaders. The chosen bootloader is pxelinux from the syslinux project.
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LAN communication unit resistivity against Internet origination attacks
Valach, Michal ; Mlýnek, Petr (referee) ; Mišurec, Jiří (advisor)
This thesis is focused on crypto-module RCM 3700, which is used for encrypted data transmission. Following work analyses basic network protocols and some sort of attacks in Ethernet network. The main goal of these attacks is to collect information and services about the device and to analyze transmitted data. Based on these information attacks can be done more precisely than without them. The main target of these attacks is the denial of particulary service or data abuse. Furthermore, in the diploma thesis configuration of router CISCO 2801 is applied in order to improve the LAN security. The deveploment board, which includes reset function, supplied circuit and interface for RS 232, was designed for crypto-module RCM 3700.
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Universal linux server for small and medium companies enabling simple network control
Juřena, Stanislav ; Pust, Radim (referee) ; Burda, Karel (advisor)
The main object of this thesis was to design a computer network for small and medium companies which will be made among others from network server providing simple network control. The next task was to provide internet connection to subscribers of local area network, their security and access to common services. There had been discussed the choice of distribution of Linux operation system with regarding to demanded services, stability and long lasting operation in theoretical part. One part of the work is a theoretic preliminary to separate services, to the purpose of their using and to their weaknesses. The practical part deals with an installation and configuration of Debian operating system, launching the base services and the setting of selected monitoring programs.
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