data link encryption 数据链路加密
Link encryption is an effective way to protect the data of inside network.
链路加密是保护内部网络数据安全的一种有效方法。
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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