In order that even a wireless terminal whose an unique ID is not registered in the filter list can use simply the access point without a prior setting task by user, a communication device includes access point means, filtering disabling means, unique ID registration means and filtering enabling means. The access point means connects a wireless terminal with at least one of a lower network and an upper network. The filtering disabling means disables a filtering which prevents connecting with an unregistered wireless terminal whose an unique ID is not registered in a filter list. The unique ID registration means acquires the unique ID of the wireless terminal and registers the acquired unique ID in the filter list, upon a state where the filtering is disabling, if a connection request is received from the wireless terminal. The filtering enabling means enables the filtering after the unique ID of the wireless terminal is registered in the filter list.