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Analyzing IP Telephony over H.323
Karpíšek, Filip ; Ryšavý, Ondřej (referee) ; Matoušek, Petr (advisor)
This thesis describes protocols from H.323 standard. Tools used for analyzing VoIP calls over H.323 are described. The main object is to describe a design and implementation of a tool for analyzing IP telephony over H.323. The tool seeks and decodes signaling messages. These messages are analyzed for information about call itself (time of beginning and end of a call, call numbers of participants, etc.) and for information necessary for capturing multimedia data. When captured, multimedia data are exported for proper post-processing. Call information are exported as XML structures.
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High-speed data transmission in mobile and wireless networks
Rosenberg, Martin ; Martinásek, Zdeněk (referee) ; Mácha, Tomáš (advisor)
The goal of the master’s thesis was to propose two laboratory exercises, integrating newly purchased devices HTC Desire and Nokia N900. Designed tasks bring new technologies and services to education process. The first task examines the configuration of branch exchange Asterisk PBX and analyzes SIP protocol. Part of exercise is concentrated on high-speed data transmission in mobile and wireless networks, regarding to usability of VoIP technology. The second exercise introduces to vulnerability of VoIP technology. It contains simulations of attacks on branch exchange Asterisk, DoS attack and discusses methods to secure VoiP communication. The part of this exercise examines usage of HTC Desire phone, instead of ordinary Wi-Fi access point.
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Analyzing IP Telephony over H.323
Karpíšek, Filip ; Ryšavý, Ondřej (referee) ; Matoušek, Petr (advisor)
This thesis describes protocols from H.323 standard. Tools used for analyzing VoIP calls over H.323 are described. The main object is to describe a design and implementation of a tool for analyzing IP telephony over H.323. The tool seeks and decodes signaling messages. These messages are analyzed for information about call itself (time of beginning and end of a call, call numbers of participants, etc.) and for information necessary for capturing multimedia data. When captured, multimedia data are exported for proper post-processing. Call information are exported as XML structures.
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High-speed data transmission in mobile and wireless networks
Rosenberg, Martin ; Martinásek, Zdeněk (referee) ; Mácha, Tomáš (advisor)
The goal of the master’s thesis was to propose two laboratory exercises, integrating newly purchased devices HTC Desire and Nokia N900. Designed tasks bring new technologies and services to education process. The first task examines the configuration of branch exchange Asterisk PBX and analyzes SIP protocol. Part of exercise is concentrated on high-speed data transmission in mobile and wireless networks, regarding to usability of VoIP technology. The second exercise introduces to vulnerability of VoIP technology. It contains simulations of attacks on branch exchange Asterisk, DoS attack and discusses methods to secure VoiP communication. The part of this exercise examines usage of HTC Desire phone, instead of ordinary Wi-Fi access point.
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