METHOD FOR AUTHENTICATING THE DISCOVERY OF THE IP NETWORK ENVIRONMENT NEIGHBOURHOOD OF A TERMINAL REQUESTING NETWORK ACCESS

摘要

The invention concerns a method for authenticating the discovery of IP network neighbourhood of a terminal (T), which consists in: allocating (A) to each parent, respectively child DNS zone a specific private cryptographic value (CV_p, CV_c) each value (CV_c) of a child DNS zone capable of being authenticated by the value (CV_p) of the parent zone; upon a first request of a terminal (T) for access to the IP network, launching (B) from an access router (RA) of the child access zone a routing authorization registration procedure enabling a routing certificate (Cert(RA)) to be delivered by the parent zone DNS server, and launching (C) from the access router (RA) a routing certificate authentication procedure A(Cert(RA)), based on the private cryptographic value allocated to the parent DNS zone. The invention is useful for making secure connections of fixed or mobile terminals to the IP network or Internet.