METHOD FOR AUTHORIZING ACCESS OF A CUSTOMER TERMINAL FROM A NOMINAL NETWORK TO A COMMUNICATION NETWORK DIFFERING FROM THE NOMINAL NETWORK, SYSTEM, AUTHENTICATION SERVER AND CORRESPONDING COMPUTER PROGRAM

摘要

P This access authorization method of a client terminal (10) of a nominal network to a communication network different from the nominal network comprises a step of verification of the access rights of the terminal during which: an authentication server (18) of the communication network to which the terminal wishes to access exchanges messages, on the one hand, with the terminal, and, on the other hand, with the nominal network, to check the access rights of the terminal to the communication network; - if at least part of the messages exchanged during this verification step do not fulfill certain predetermined criteria, the authentication server limits the access of the terminal to the communication network. At least part of the criteria predetermined is verified by the authentication server on the basis of an analysis, performed by the authentication server, messages it has exchanged with the terminal. / P