| 摘要 |
In order to control the authorisation of a user during an attempt to access an IP transport network ( 5 ) by means of an access network ( 1, 2 ), a user terminal ( 11, 12, 13 ) emits an access request to an access supplier ( 6, 7, 8 ), containing data for authenticating the user to the access supplier, and said request is then transmitted to an access server ( 9 ) of the access network ( 1, 2 ) in view of being addressed to a remote authentication server ( 15 ) of the access supplier. On reception of the access request, the access server ( 9 ) emits a RADIUS request to a proxy server ( 10 ) of the access network ( 1, 2 ) which determines whether the user must be locally authenticated, and if this is the case, the proxy server transmits, to the access server ( 9 ), a request for authentication data to be addressed to the terminal of the user, and carries out a local procedure to authenticate the user, on the basis of the authentication data supplied by the user.
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