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2. 发明授权

US6101543A Pseudo network adapter for frame capture, encapsulation and encryption 失效
标题翻译：用于帧捕获，封装和加密的伪网络适配器
公开(公告)号：US6101543A
公开(公告)日：2000-08-08
申请号：US738155
申请日：1996-10-25
申请人： Kenneth F. Alden , Mitchell P. Lichtenberg , Edward P. Wobber
发明人： Kenneth F. Alden , Mitchell P. Lichtenberg , Edward P. Wobber
IPC分类号： H04L9/36 , G09C1/00 , H04L12/22 , H04L12/46 , H04L12/56 , H04L29/12 , G06F11/00
CPC分类号： H04L61/2015 , H04L29/12028 , H04L61/103 , H04L63/0272 , H04L63/0485 , H04L63/123
摘要： A new pseudo network adapter is disclosed providing an interface for capturing packets from a local communications protocol stack for transmission on the virtual private network. The system further includes a Dynamic Host Configuration Protocol (DHCP) server emulator, and an Address Resolution Protocol (ARP) server emulator. The new system indicates to the local communications protocol stack that nodes on a remote private network are reachable through a gateway that is in turn reachable through the pseudo network adapter. The new pseudo network adapter includes a transmit path for processing data packets from the local communications protocol stack for transmission through the pseudo network adapter. The transmit path includes an encryption engine for encrypting the data packets and an encapsulation engine for encapsulating the encrypted data packets into tunnel data frames. The pseudo network adapter passes the tunnel data frames back to the local communications protocol stack for transmission to a physical network adapter on a remote server node. The new pseudo network adapter further includes an interface into a transport layer of the-local communications protocol stack for capturing received data packets from the remote server node, and a receive path for processing received data packets captured from the transport layer of the local communications protocol stack. The receive path includes a decapsulation engine, and a decryption engine, and passes the decrypted, decapsulated data packets back to the local communications protocol stack for delivery to a user.
摘要翻译：公开了一种新的伪网络适配器，其提供用于从本地通信协议栈捕获分组以在虚拟专用网上传输的接口。该系统还包括动态主机配置协议（DHCP）服务器仿真器和地址解析协议（ARP）服务器仿真器。新系统向本地通信协议栈指示远程专用网络上的节点可通过网关访问，该网关又可通过伪网络适配器访问。新的伪网络适配器包括用于处理来自本地通信协议栈的数据分组以发送通过伪网络适配器的发送路径。发送路径包括用于加密数据分组的加密引擎和用于将加密的数据分组封装成隧道数据帧的封装引擎。伪网络适配器将隧道数据帧传递回本地通信协议栈，以传输到远程服务器节点上的物理网络适配器。新的伪网络适配器还包括到本地通信协议栈的传输层中的接口，用于从远程服务器节点捕获接收的数据分组，以及用于处理从本地通信协议的传输层捕获的接收数据分组的接收路径堆栈接收路径包括解封装引擎和解密引擎，并将经解密的解封装的数据分组传回本地通信协议栈以传递给用户。

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