| 摘要 |
PROBLEM TO BE SOLVED: To prevent unauthorized access to information on a network system. SOLUTION: A file having a URL of the information which can be acquired by a client and a keyword associated with it and corresponding data in which the URL is associated with the keyword are stored in a storage device of a server. The client displays homepage data including an anchor having a file name of the file on its display device, and when the anchor included in the homepage data is selected, transmits the file name which the anchor has to the server. The server transmits the file corresponding to the file name transmitted from the client to the client. The client transmits the keyword, which the file transmitted from the server has, to the server. The server acquires the information based on the URL corresponding to the keyword transmitted from the client and transmits it to the client. |
