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    Understanding TCP Proxy

    A TCP proxy is a server that acts as an intermediary between a client and the destination server. Clients establish connections to the TCP proxy server, which then establishes a connection to the destination server.

    TCP proxy supports Window Scale (WS) option that are carried by SYN and SYN ACK packets. If both the client and server support the WS option, the client and server use Window Scale Factor (WSF) to scale the receive and send window. TCP proxy supports a maximum receive window size of 1 MB per session. If the scaled TCP receive window size from the receiver is smaller or equal to 1 MB, the TCP proxy will use it directly. But if the scaled TCP receive window size is larger than 1 MB, the TCP proxy will use 1 MB as the proxy receive window size.

    Modified: 2016-11-21