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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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Link layer LAN network security
Sedláček, Jiří ; Grenar, David (referee) ; Slavíček, Karel (advisor)
The bachelor‘s thesis is about security concerning local area networks of the data link layer. The goal of the thesis is to characterize basic functioning of the ISO/OSI reference model as well as describing how the data link layer works to understand the topic, specify the possibilities of attacking the data link layer (for example rogue DHCP server, ARP spoofing, CAM table overflow, attacking the spanning tree protocol and others) and possible security measures to protect against the attacks. The purpose of the thesis is also a suggestion for assembling an experimental network relating to the topic of the thesis. Theoretical part determines the most important protocols of the data link layer, methods of abusing them and protection of those protocols. The practical part contains a brief description of the attacks, used utilities for accomplishing the attacks, a network topology, execution of the attacks, detection and protection against the attacks as well as briefly summarizing the results. The thesis also sums up some of the possible recommended configuration to repel the attacks and suggesting how to behave in a cyber environment. For the purpose of simulating the attacks, Kali Linux and Windows 10 are the operating systems that were used the most in this thesis.
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Characterization of membrane pores formed by newly discovered colicin FY from Yersinia frederiksenii
Dolejšová, Tereza ; Fišer, Radovan (advisor) ; Nunvář, Jaroslav (referee)
Colicins are toxic exocellular proteins used by Gram-negative bacteria for interspecies and intraspecies competition. The colicin FY is a pore-forming protein which was recently discovered at Masaryk university. Kolicin FY is produced by strain Yersinia frederiksenii Y27601 and is active against other strains of genus Yersinia. By comparison of aminoacid sequences of C-terminal domains of selected colicins it was proved, that colicin FY is closely related to colicin Ib (Bosák et al., 2012). In this work I was trying to create brief and integrated summary about the group of colicins from the perspective of an outer membrane traslocation mechanism, overcoming the periplasmic space up to isertion of C-terminal colicin domain into the inner membrane phospholipid bilayer. Other aim of my work was to generally summarize pore properties of known colicins and compare them with recently measured characteristics of colicin FY. Keywords: colicin, Yersinia, planar lipid membranes, membrane pore
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Link layer LAN network security
Sedláček, Jiří ; Grenar, David (referee) ; Slavíček, Karel (advisor)
The bachelor‘s thesis is about security concerning local area networks of the data link layer. The goal of the thesis is to characterize basic functioning of the ISO/OSI reference model as well as describing how the data link layer works to understand the topic, specify the possibilities of attacking the data link layer (for example rogue DHCP server, ARP spoofing, CAM table overflow, attacking the spanning tree protocol and others) and possible security measures to protect against the attacks. The purpose of the thesis is also a suggestion for assembling an experimental network relating to the topic of the thesis. Theoretical part determines the most important protocols of the data link layer, methods of abusing them and protection of those protocols. The practical part contains a brief description of the attacks, used utilities for accomplishing the attacks, a network topology, execution of the attacks, detection and protection against the attacks as well as briefly summarizing the results. The thesis also sums up some of the possible recommended configuration to repel the attacks and suggesting how to behave in a cyber environment. For the purpose of simulating the attacks, Kali Linux and Windows 10 are the operating systems that were used the most in this thesis.
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Characterization of membrane pores formed by newly discovered colicin FY from Yersinia frederiksenii
Dolejšová, Tereza ; Fišer, Radovan (advisor) ; Nunvář, Jaroslav (referee)
Colicins are toxic exocellular proteins used by Gram-negative bacteria for interspecies and intraspecies competition. The colicin FY is a pore-forming protein which was recently discovered at Masaryk university. Kolicin FY is produced by strain Yersinia frederiksenii Y27601 and is active against other strains of genus Yersinia. By comparison of aminoacid sequences of C-terminal domains of selected colicins it was proved, that colicin FY is closely related to colicin Ib (Bosák et al., 2012). In this work I was trying to create brief and integrated summary about the group of colicins from the perspective of an outer membrane traslocation mechanism, overcoming the periplasmic space up to isertion of C-terminal colicin domain into the inner membrane phospholipid bilayer. Other aim of my work was to generally summarize pore properties of known colicins and compare them with recently measured characteristics of colicin FY. Keywords: colicin, Yersinia, planar lipid membranes, membrane pore
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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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