• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.1
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• pp.91-96
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• 2014

According to the spread of computers and the development of the information society, people are focused on privacy information. As the development of its associated policy and technology, it has been tried various attempts to protect their personal information. In this paper, we proposed anti-screen capture modules to protect personal information or a company's confidential information for agencies and departments that keeps top security. As a result, we can prevent an illegal use or a stealing of another person's information in a public agency or personal computer. Also modules can stop exposures of top security data and personal information during they communicate with others in their institution's sever system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.787-790
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• 2012

Recently due to the development of the information society and the spread of computer, interest for personal information is increased and as policy and technology associated with the development, we have been various attempts to protect your personal information. In this paper, for agencies and departments to computer use and to deal with Important data of individuals, personal information or the company's confidential information, we proposed modules to protect them. As a result, we prevent a public agency or private institutions within that using mean bad or stealing another person's information. When we communicate various information with the systems in the institutions, the module can be prevented critical data and personal information exposure.

• 대한공업교육학회지
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• v.32 no.1
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• pp.134-152
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• 2007

This study deals with the development of computer program which can restrict students to access to the unallowable web sites during the Internet based class. Our suggested program can find the student's access list to the unallowable sites, display it on the teacher's computer screen. Through the limitation of the student's access, teacher can enhance the efficiency of class and fulfill his educational purpose for the class. The use of our results leads to the effective and safe utilization of the Internet as the teaching tools in the class. Meanwhile, the typical method is to turn off the LAN (Local Area Network) power in order to limit the student's access to the unallowable web sites. Our program has been developed on the Linux operating systems in the small network environment. The program includes following five functions: the translation function to change the domain name into the IP(Internet Protocol) address, the search function to find the active students' computers, the packet snoop to capture the ongoing packets and investigate their contents, the comparison function to compare the captured packet contents with the predefined access restriction IP address list, and the restriction function to limit the network access when the destination IP address is equal to the IP address in the access restriction list. Our program can capture all passing packets through the computer laboratory in real time and exactly. In addition, it provides teacher's computer screen with the all relation information of students' access to the unallowable sites. Thus, teacher can limit the student's unallowable access immediately. The proposed program can be applied to the small network of the elementary, junior and senior high school. Our research results make a contribution toward the effective class management and the efficient computer laboratory management. The related researches provides teacher with the packet observation and the access limitation for only one host, but our suggested program provides teacher with those for all active hosts.