| 摘要 |
The present invention provides a method by which to obtain a MAC address of a communication party remotely across a router. In a network where an originating host and a destination host belong to different local areas, the originating host ( 10 ) transmits a request packet by which the originating host requests the destination host to send a GUID (Global Unique Identifier) of the destination host. In response to the request packet, the destination host ( 30 ) sends back a response packet in which the destination host has its own GUID contained therein. The originating host ( 10 ) acquires a GUID of destination host from the response packet. The originating host inquires of a database ( 62 ) that stores GUIDs and personal information in an associated manner, about the personal information associated with the acquired GUID.
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