Wrote Ing. Pavel Rosman, Ph.D. - Department of Informatics and Statistics, Faculty of Management and Economics, Tomas Bata University in Zlín, e-mail: rosman@fame.utb.cz
This thesis deals with problems of Internet telephony security. It also contains description of basic properties and characteristics of Voice over IP technology. There are also categorized possible threats and attacks and included their short descriptions and specified basic requirements on safe and secure operation. Next part deals with tested attacks with respect to information the clients send to the Internet about their users. The last part of the thesis is concluded with a list of selected implemented security mechanisms.
