Abstract: Access restriction is performed on access to a page on which information is posted from a terminal of a subject. It is determined whether positions of terminals used by the subject and a manager, who is associated with the subject in advance, accord with each other. A relaxation operation is received from the terminal of the manager, when it is determined that the positions accord with each other. The access restriction by a restriction unit is relaxed, when the relaxation operation is received. A characteristic word of the page accessed by the terminal of the subject for which the access restriction is relaxed is acquired. The acquired characteristic word is transmitted to the terminal of the manager to display the characteristic word. A recovery operation is received from the terminal of the manager. The access restriction performed by the restriction unit is recovered, when the recovery operation is received.