| 摘要 |
Leakage of information is prevented when information in an in-house server is viewed by a mobile telephone. A request from a mobile telephone is applied to a virtual server via the Internet, a distribution server and a virtual bridge device. The request is applied to the virtual bridge device from the virtual server, and the virtual bridge device appends a VLAN tag indicating that the request is a request for a company A. The request is input to a data center router. The router determines from the VLAN tag that the request is a request for company A and transmits the request to a LAN for company A. Thus the request is reliably applied to the LAN for company A, which is the access destination.
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