Patent ID: 8780921

Claim:
Procedure for accessing a data network via a terminal, by creating a tunnel from said terminal to an operational service, using a connection credit, said procedure comprising: A stage ( 2 . 1 ) of connecting the terminal to a port of said data network, A stage ( 2 . 2 ) of creating a tunnel to a configuration service, A stage ( 2 . 3 ) of obtaining a connection credit from the said configuration service, A stage ( 2 . 6 ) of creating a tunnel to said operational service in order to access this service using the connection credit obtained from the configuration service, wherein in step ( 2 , 1 ), said terminal is connected to a physical dedicated network connection port ( 12 ), called a confidential port, said confidential port ( 12 ) being the sole physical port amongst a plurality of physical ports ( 13 ) of said data network dedicated to authorize the access of the connected terminal to said configuration service by using the tunnel created in step ( 2 . 2 ) in contrast to the other ports ( 13 ) of said plurality of physical ports which do not authorize said access.