A method includes receiving, by a first device that is included in a first network and a second network, a request from a second device to join the first network. The method also includes making, by the first device, determinations of whether to transmit the second device a first credential corresponding to the first network and whether to transmit the second device a second credential corresponding to the second network. The method also includes using the determinations as a basis to select, as content for a message, the first credential, the second credential, or an indication that the second device is not allowed on the first network and not allowed on the second network. The method also includes transmitting the message that includes the content to the second device.