Data network management system, data network management apparatus, data processing apparatus, and data network management method

A data network management apparatus comprising:

• identification information of a data processing apparatus that has completed a given authentication test;
• and
• a control circuit configured to determine based on identification information obtained from data processing apparatuses installed in an installation area, a first data processing apparatus from which the data is to be obtained.

A data network management method of transmitting data to a data network management apparatus from a plurality of data processing apparatuses installed in an installation area, the data network management method comprising:

• transmitting, by the plurality of data processing apparatuses, to the data network management apparatus, identification information thereof together with the processed data;
• and
• determining, by the data network management apparatus, based on the identification information obtained from the plurality of data processing apparatuses installed in the installation area and identification information of data processing apparatuses that have completed a given authentication test, a first data processing apparatus from which the data is to be obtained among the plurality of data processing apparatuses.