The present disclosure relates to a method and system for one-way data transmission from an open network to a closed network. A data transmission controller on an open network provides a data stream to first, second, and third transmitter nodes on the open network. The first and second transmitter nodes transmit the data stream to corresponding receiver nodes on a closed network. The third transmitter node transmits the data stream to a receiver node on the open network. Data transmission verification is performed at both the open network and the closed network.
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