Abstract: A system and method for increasing the efficiency of broadband information channels using an optimization engine that monitors, measures and controls actual data throughput in TCP networks. The optimization engine is implemented as a single sided proxy server, receiving, sending and controlling all data traffic in the network. The engine defines and monitors the TCP session capacity for individual channels, and generates responses to accelerate data flow speed, in existing access pipes. The engine generates and sends out fake acknowledgement messages to an information source, and influences data flow speed and accuracy by controlling the quantity, frequency and content of these messages. Furthermore the present invention enables maximizing the receive window size of clients by combining the available buffer capacity of multiple clients into shared memory space, and allocating usage of this space according to real time statistical calculations.