To provide a protocol for authorizing a network terminal to print a document by a network printer.

A network terminal authorization protocol is used in a network connected to a printer, a server, and the network terminal. The protocol authorizes, via the server, printing of a document at the printer at the request of the network terminal. It includes the steps of: creating, at the server, an authorization record authorizing the network terminal to print at the printer; requesting, at the network terminal and via a printing request, printing of the document at the printer; verifying, using the authorization record, that the network terminal is authorized to print at the printer; and, in the event that the verification succeeds, sending the document to the printer for printing.