A communication apparatus includes a transmission unit that, when providing communication parameters for communication in a wireless network, transmits an authentication request message for requesting authentication by unicast in a case where a transmission destination of the authentication request message is identified and transmits the authentication request message by broadcast in a case where a transmission destination of the authentication request message is not identified, a reception unit that receives a response message responding to the authentication request message from another communication apparatus, and a provision unit that provides the another communication apparatus with the communication parameters upon receipt of the response message.