Abstract: A method, including: assigning a SIM card to a telecommunications terminal and recording this assignment on a server; providing the SIM card to a mobile radio gateway; logging in a radio module of the mobile radio gateway to the mobile radio network using the provided SIM card; setting up a mobile radio data connection by the logged in radio module of the mobile radio gateway via the mobile radio network to the Internet; setting up a first secure data connection between the mobile radio gateway and the server; setting up a second secure data connection between the telecommunications terminal and the server; and connecting the first secure data connection and the second secure data connection by the server for the provision of a data connection of the telecommunications terminal to the Internet via the second secure data connection, the first secure data connection and the mobile radio data connection.