In a content supply system 100, in order to use a streaming server 102 to perform a live distribution, a user PC 106 used makes a reservation for a time zone, etc. to a server reservation control center 101. When the user PC 106 sends desired reservation information including the information on the setting of the disclosure level indicating whether distribution of the content should be open to the general public or accepted only to specific people in addition to the time zone above, etc. to the server reservation control center 101 via the Internet 103. Then, in the case of a content distribution based on a reservation, restrictions, etc. are put on the distribution from the streaming server 102 to the client terminal apparatus 107 according to the disclosure level setting information above.