Abstract: A network testing system according to an exemplary embodiment of the present invention includes: a radio wave transmitting apparatus which transmits a standard wave including timing data; a first network testing apparatus which performs time synchronization based on the timing data at the time of receiving the standard wave and generates first timing information; and a second network testing apparatus which performs time synchronization based on the timing data at the time of receiving the standard wave, generates second timing information, and transmits a network test reply and the second timing information for network testing at the time of receiving a network test request and the first timing information from the first network testing apparatus to perform the network testing along with the first network testing apparatus.

Abstract: A method for analyzing a security grade of an information property, and more particularly, a method by which a security grade (a risk degree in security) is analyzed objectively and quantitatively such that risk degree management of an information property can be efficiently performed, is provided. The method for analyzing a security grade of an information property includes: selecting an information property as an object of security grade analysis, among information properties for which risk degree analysis and importance evaluation in managerial, physical, and technological aspects are performed; calculating the property risk degree of the selected property based on the weighted mean of risk degrees and importance evaluation; and mapping the weighted mean of the risk degree and the importance on a 2-dimensional plane having the X-axis indicating the weighted mean of a risk degree and the Y-axis indicating importance, and based on the appearing result, determining the priority of a safeguard.

Abstract: An authentication system using device identification information in ubiquitous environment includes: an information reader for receiving authentication information of a user through at least one device of the user; a home gateway and an office gateway for registering the user authentication information received from the information reader, and performing service control through verification of authentication of the user; and an integrated authentication center for receiving the user authentication information from the home gateway and the office gateway by querying, in response to a request for the authentication of the user received from a specific system, and, when the respective pieces of the user authentication information are identical to each other, transmitting an authentication success message to the specific system.

Abstract: A method for analyzing a security grade of an information property, and more particularly, a method by which a security grade (a risk degree in security) is analyzed objectively and quantitatively such that risk degree management of an information property can be efficiently performed, is provided. The method for analyzing a security grade of an information property includes: selecting an information property as an object of security grade analysis, among information properties for which risk degree analysis and importance evaluation in managerial, physical, and technological aspects are performed; calculating the property risk degree of the selected property based on the weighted mean of risk degrees and importance evaluation; and mapping the weighted mean of the risk degree and the importance on a 2-dimensional plane having the X-axis indicating the weighted mean of a risk degree and the Y-axis indicating importance, and based on the appearing result, determining the priority of a safeguard.