| 摘要 |
To inform a terminal whether linked URLs contained in a browsed Web page are subject to browsing restriction, without placing a high load on a URL information database, a relay apparatus acquires a Web page from a Web server in accordance with a request from a terminal, queries a URL database as to a linked URL contained in the Web page, creates link information containing a restriction level to which a linked Web page belongs and the in-page location of a link display, determines a link subject to browsing restriction based on the link information and a predetermined restriction level of the requesting terminal, changes the link display, and sends the Web page with the changed link display to the terminal. Further, the relay apparatus caches the link information. If link information about a Web page acquired in accordance with a request from the terminal exists in a cache, the relay apparatus does not query URL information but uses the link information.
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