The Secure Ether Network Card, which is a sort of safety, integrates the data encryption technology into the network card and provides the encryption and the authentication services to the link layer.

保密以太网卡是将数据加密技术集成到网卡上，对链路层数据提供加密和认证服务的安全设备。

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The net structure is standard ether-net with star link as inner connecting to make the structure of whole net stable and convenient to expand, functions divided clearly and operating simply.

网络结构采用标准以太网形式，内部以星形方式连接，使整个网络结构稳定，便于扩充，并且功能划分清楚，便于使用和操作。

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