| 摘要 |
In a virtual private network system accessed by an internet, a virtual local area network (LAN) is connected to a LAN emulation server and IAN emulation clients, and a router is connected between the internet and the virtual LAN. Also, a public mobile data network is connected to a location register and mobile data subscriber processing units, and a data gateway is connected between the internet and the public mobile data networks Further, a virtual private network gateway is connected between the virtual LAN and the public mobile data network. A mobile data terminal having one IP address and one public network address and can be connected to either one of the LAN emulation clients or one of the mobile data subscriber processing units.
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