Waterfall Security Solutions, a supplier of Unidirectional Security Gateways for critical infrastructure networks, has received patent 8,223,205 for "A Secure Implementation of Network-Based Sensors" from the United States Patent Office. The patent represents feeding of data from network-based security sensors like video cameras on control system networks, within security operations centers on less-secure networks, thereby ensuring and sustaining the safety and reliability of the sensor network.
The patent shows Unidirectional Security Gateways-based conveyance of security sensor data like video data from safety-critical and reliability-critical networks. The hardware-enforced gateways enable the data to arrive at out-sourced monitoring sites and central monitoring sites, posing no risk to the originating network. The unidirectional hardware allows video data and other data to exit a protected network, without allowing the signal to return to the network.
Video feeds are being widely adopted in industrial networks. Video tracking is carried out for remote, un-staffed sites and within locations like subway stations, airports, and vehicular traffic monitoring where public form a part of the physical process. These video feeds can be tracked in various locations. Some video feeds may be consistently accessed by public via Internet. When providing video feeds to viewers within less-secure networks, the integrity of the original video sensor need to be kept secure and protected from other sensing or control equipment present in the same network as the video sensor. Security sensor data can be shared through Hardware-enforced Unidirectional Security Gateways, thereby preserving and protecting the originating sensors and networks.