Patent ID: 8739270
Filing Date: 2014-05-27
Classification: H04L

Abstract:
1. A method for a high-to-low security level exchange of information from a first host operating in a higher security domain using a legacy protocol to a second host operating in a lower security domain using internet protocol (IP), the method comprising: transmitting, by the first host, data to a driver in a data guard; establishing, by a second task group, a transmission control protocol (TCP) connection from the second task group to the second host through a second interface; establishing, by a first task group, a user datagram protocol (UDP) connection from the first task group to the second task group; transmitting the data, by a first interface, to the first task group; storing, by the first task group, the data in a file system; receiving, by a filter task group, a file name for the data; filtering, by the filter task group, the data according to a rule set; changing, by the filter task group, a security level of the data; forwarding, by the filter task group, the file name to the second task group for forwarding the data to the second host; and forwarding, by the second task group, the data to the second host, wherein the first task group and the second task group allow for processes of the first host to be isolated from processes of the second host, wherein the second host operates in one of a secret domain and an unclassified domain.