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    • 22. 发明申请
    • VERIFYING AVAILABILITY AND REACHABILITY THROUGH A NETWORK DEVICE
    • 通过网络设备验证可用性和可靠性
    • WO2012128883A1
    • 2012-09-27
    • PCT/US2012/026119
    • 2012-02-22
    • CISCO TECHNOLOGY, INC.WEBER, DieterWHITE, DavidMERTES, Lawrence
    • WEBER, DieterWHITE, DavidMERTES, Lawrence
    • G06F15/173
    • H04L29/08648H04L45/24H04L45/28H04L63/0281
    • In an embodiment, in response to receiving from a client computer a client request to connect to a server: processing the client request in a network protection device including applying one or more translations and one or more security checks, generating a server acknowledgment to the client computer as if the server acknowledged receiving the client request from the client computer, processing the server acknowledgement in the network protection device including applying one or more translations and one or more security checks and sending the server acknowledgment to the client computer; in response to receiving a client acknowledgment of receiving the server acknowledgment, determining that a first path between the client computer and the network protection device is operational; generating a server request to the server; processing the server request in the network protection device, determining that a second path between the network protection device and the server is operational.
    • 在一个实施例中,响应于从客户端计算机接收到连接到服务器的客户端请求:在网络保护设备中处理客户端请求,包括应用一个或多个翻译和一个或多个安全检查,向客户端生成服务器确认 计算机,好像服务器确认从客户端计算机接收到客户端请求,处理网络保护设备中的服务器确认,包括应用一个或多个翻译和一个或多个安全检查,并将服务器确认发送给客户端计算机; 响应于接收到客户端确认接收到服务器确认,确定客户端计算机和网络保护设备之间的第一路径是可操作的; 生成服务器请求到服务器; 处理网络保护设备中的服务器请求,确定网络保护设备和服务器之间的第二路径是可操作的。