Wireless telecommunications network, and a method of authenticating a message

摘要

A method is provided of authenticating a message from a femtocell base station in a wireless telecommunications network comprising a security gateway and a femto-gateway. The method comprising the steps of: checking by the security gateway that a source IP address in the message from the femtocell base station accords with that expected from that femtocell base station, and checking by the femto-gateway that the source IP address in the message accords with that expected from that femtocell base station by inspecting a database relating a femtocell base station identifier to source IP address data.

主权项

1. A method of authenticating a message from a femtocell base station in a wireless telecommunications network comprising a security gateway and a femto-gateway, the method comprising:
checking by the security gateway that a source IP address in the message from the femtocell base station accords with a femtocell base station identifier expected from that femtocell base station,
wherein the security gateway uses an encryption key which the security gateway knows is allocated to that IP address in order to decrypt and authenticate the message and check that the IP address that the message contains accords with the femtocell base station identifier, and additionally checking by the femto-gateway that the source IP address in the message, the message including a femtocell base station identifier, accords with the source IP address expected from that femtocell base station as identified by that femtocell base station identifier by inspecting a database relating a femtocell base station identifier to source IP address data,
wherein the security gateway requests secondary authorization by the femto-gateway of any femtocell base stations which seek to set up IP tunnels to the femto-gateway.