A first setting information notification unit notifies a management apparatus via a relay apparatus of first setting information. A setting information generation unit generates third setting information from the first setting information and second setting information. For example, the setting information generation unit generates the third setting information by complementing the first setting information with the second setting information that is preliminarily stored in a setting information storage unit. A communication confirmation unit confirms communication based on the third setting information between a first communication apparatus and a second communication apparatus. A second setting information notification unit notifies the relay apparatus, the first communication apparatus, and the second communication apparatus of the third setting information.