| 摘要 |
A method is provided of using the Host Identity Protocol (HIP) to at least partially secure communications between a first host ( 102 ) operating in a first network environment and a second, HIP-enabled host ( 122 ) operating in a second network environment, with a gateway node ( 114 ) forming a gateway between the two environments. In the method, an identifier is associated with the first host ( 102 ), stored at the gateway node ( 114 ), and sent to the first host ( 102 ). The identifier is then used as a source address in a subsequent session initiation message sent from the first host ( 102 ) to the gateway node ( 114 ), having an indication that the destination of the message is the second host ( 122 ). The stored identifier at the gateway node is then used to negotiate a secure HIP connection to the second host. The first network environment may be a UMTS or GPRS environment, in which case the gateway node may be a Gateway GPRS Support Node (GGSN).
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