Intranet is the need to protect the network, in order to prevent the attack on the intranet extranet, external network data to be processed, by hardware in the link layer for data analysis, blocking does not conform to the specific rules of packet. The analysis of data cache and electronic switch gap including a certain capacity, to meet the needs of data storage and discarded functionality; data analysis function from the plate on the data analysis of gap is complete, ensure that there is a higher resolution.
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