In existing Internet uses, the corporation network is realized through the virtual LAN on the basis of Internet.
在现有的因特网应用中，企业网是通过在因特网基础上的虚拟局域网来实现的。
参考来源 - 基于SOCKET通信机制的远程透明传输平台
虚拟区域网路
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Virtual LAN
abstract:In computer networking, a single layer-2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them via one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN or VLAN.