TCP proxying of network sessions mid-flow

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United States of America Patent

PATENT NO 9438699
SERIAL NO

14817002

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
JUNIPER NETWORKS INCCALIFORNIA USA CALIFORNIA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kasturi, Rohini Livermore, US 21 478
Krishna, Gopi Tracy, US 32 1285
Ojha, Chitrak K San Jose, US 2 22
Rajaram, Vijay S Santa Clara, US 2 22
Ramachandra, Venkatesh Badakere San Jose, US 3 71
Shetty, Nikhil G San Jose, US 2 22

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