公开(公告)号：US09100236B1

公开(公告)日：2015-08-04

申请号：US13632064

申请日：2012-09-30

Applicant: Juniper Networks, Inc.

Inventor： Nikhil G. Shetty ,  Chitrak K. Ojha ,  Rohini Kasturi ,  Vijay S. Rajaram ,  Gopi Krishna ,  Venkatesh Badakere Ramachandra

IPC: G06F15/16 ,  H04L29/06 ,  H04L29/08

CPC classification number: H04L67/42 ,  H04L29/06 ,  H04L29/0872 ,  H04L67/1095 ,  H04L67/141 ,  H04L67/28 ,  H04L67/2809 ,  H04L69/16 ,  H04L69/163

Abstract: In one example, an intermediate network device sends packets that advertise a transmission control protocol (TCP) window size of zero bytes to a client device and a server device. The device, after sending the packets, receives a first zero-window probe packet from the client device including data representing a first current sequence number for a client-to-server packet flow of an established network session, and a second zero-window probe packet from the server device including data representing a second current sequence number for a server-to-client packet flow of the network session. The device also initializes a TCP state based on the first and second current sequence numbers, and acts as a TCP proxy for packets following the first zero-window probe packet of the client-to-server packet flow based on the TCP state and packets following the second zero-window probe packet of the server-to-client packet flow based on the TCP state.

Abstract translation: 在一个示例中，中间网络设备向客户端设备和服务器设备发送通告零字节的传输控制协议（TCP）窗口大小的分组。 所述设备在发送所述分组后，从所述客户端设备接收包括表示所建立的网络会话的客户端到服务器分组流的第一当前序列号的数据的第一零窗口探测分组，以及第二零窗口探测 来自服务器设备的分组包括表示网络会话的服务器到客户端分组流的第二当前序列号的数据。 该设备还基于第一和第二当前序列号初始化TCP状态，并且作为基于TCP状态的客户端到服务器分组流的第一个零窗口探测分组之后的分组的TCP代理和跟随的数据包 基于TCP状态的服务器到客户端数据包流的第二个零窗口探测包。

公开(公告)号：US09438699B1

公开(公告)日：2016-09-06

申请号：US14817002

申请日：2015-08-03

Applicant: Juniper Networks, Inc.

Inventor： Nikhil G. Shetty ,  Chitrak K. Ojha ,  Rohini Kasturi ,  Vijay S. Rajaram ,  Gopi Krishna ,  Venkatesh Badakere Ramachandra

IPC: G06F15/16 ,  H04L29/06 ,  H04L29/08

CPC classification number: H04L67/42 ,  H04L29/06 ,  H04L29/0872 ,  H04L67/1095 ,  H04L67/141 ,  H04L67/28 ,  H04L67/2809 ,  H04L69/16 ,  H04L69/163

Abstract: In one example, an intermediate network device sends packets that advertise a transmission control protocol (TCP) window size of zero bytes to a client device and a server device. The device, after sending the packets, receives a first zero-window probe packet from the client device including data representing a first current sequence number for a client-to-server packet flow of an established network session, and a second zero-window probe packet from the server device including data representing a second current sequence number for a server-to-client packet flow of the network session. The device also initializes a TCP state based on the first and second current sequence numbers, and acts as a TCP proxy for packets following the first zero-window probe packet of the client-to-server packet flow based on the TCP state and packets following the second zero-window probe packet of the server-to-client packet flow based on the TCP state.