A device management apparatus that enables an information obtaining apparatus to obtain device information from a device management apparatus connected to a first network other than a second network to which the information obtaining apparatus is connected, and manage devices. A communication protocol that can be used by the information obtaining apparatus is extracted from a device information obtaining request from the information obtaining apparatus. When a device connected to the first network is not operating using the communication protocol and is able to activate the communication protocol, the device is requested to activate the communication protocol. When the communication protocol has been successfully activated, and it is necessary to change access settings for the device, the device is requested to change the access settings. When the access settings have been successfully changed, a response concerning device information is created and sent to the information obtaining apparatus.