1. Method for automatically identifying an access right to protected areas in a first network using a unique connection identifier of a second network, comprising the following procedural steps: dynamic or static assignment of a unique identifier of the first network for a terminal, during or prior to the latter's connection to the first network by means of the second network; storage of a combination of at least the unique connection identifier of the second network by means of which the connection was made, and the unique identifier of the first network in an authentication unit; a provider of the protected area requesting the authentication unit to determine the unique connection identifier of the second network using the unique identifier of the first network when the terminal would like access to the protected area; authenticating the unique connection identifier of the second network and/or communicating the unique connection identifier of the second network to the provider of the protected area by means of the authentication unit; and checking whether an access right for the protected area exists for the unique connection identifier of the second network.