Patent ID: 8489712

Claim:
A method for identification and/or addressing of a data terminal of a local network, in which the local network is connected via a data transmission device to a large area network and at least two data terminals of the local network are connected as “client” to a terminal system assigned to the large area network as server via the data transmission device comprising: a) on the basis of a triggering event, at least one first data terminal transmitting, in particular changeable, first address/identification information items referencing a local network address and a large area network address to the terminal system storing the transmitted first address/identification information, wherein said transmitted first address/identification information items are items generated by using a source IP address of the data transmission device, b) a second data terminal transmitting, in particular changeable, second address/identification information items referencing a large area network address to the terminal system with which information items the terminal system is advised to create third address/identification information items for the local network and to transmit these to the second data terminal, wherein said transmitted second address/identification information items are items generated by using a source IP address of the data transmission device, c) to determine the third address/identification information items, the terminal system comparing the received second address/identification information items with the stored first address/identification information items, d) if the comparison reveals that a corresponding part of the saved first address/identification information items to the second address/identification information exists, the terminal system transmitting a part of the first address/identification information items which can be traced back to the local network to the second data terminal as the third address/identification information items to be determined, e) with the part of the first address/identification information items transmitted as the third address/identification information items, the second data terminal communicates directly with the first data terminal using the third address/identification information items received from the terminal system.