The registering work of a wireless LAN terminal and a wireless LAN access point has been troublesome especially to beginners. According to the wireless LAN communication system of this invention, the client terminal judges the necessity of registering the communication profiles, and if necessary, executes the register processing with the wireless LAN access point, which simplifies the registering work by the user. Here, the system requires the wireless LAN access point to switch the normal mode into the register request-accepting mode, which makes it possible to prevent the register processing from being executed with unintentional client terminals. Therefore, it is possible to provide a wireless LAN communication system that facilitates the registering work and achieves the security at a satisfactory level.
