NetWall Diode Introduction
NetWall Diode provides unilateral inter-zone data transfer and streaming across the zones. The zones are referred to as BLUE (inner) and RED (outer) and are joined by an optic fiber. This fiber facilitates the transfer of non-routable data between the zones. No direct network connection exists and no pertinent network information (IP address, MAC address) is exchanged.
The optical fiber performs galvanic isolation between the two computers. One end of the optical fiber is connected to an optical transmitter on the Transmit side of the computer in the trusted domain, and the other end of the optical fiber is connected to an optical receiver on the Receive side of the computer in the untrusted domain.
The laws of physics, therefore, guarantee 100% isolation between the two computers, and eliminate any possibility of data flow through the computers from the untrusted domain to the trusted domain.
The inner zone (BLUE) corresponds to the network in the customer site that requires protection. The outer zone (RED) is the more public-facing network of the site. Usually, the inner and outer zones are isolated from one another to protect the inner zone.
For example, a water treatment plant would have all its systems in the OT (BLUE) zone. Areas such as Plant Management, Accounting, and Engineering would be in the IT (RED) zone. NetWall would pass data in a secure manner from the OT zone to the IT zone.
NetWall Diode features
NetWall provides the following features:
- No network connection between inner network and outer network
- Up to 1Gbit/sec transfer rate using optic fiber.
- Full Protocol Break: Data Payload Only and data traffic physically enforced in one way only (from BLUE to RED)
NetWall Diode components
NetWall consists of the following components:
- NetWall BLUE and RED UI: UI used to configure NetWall nodes and transfer parameters.
- NetWall nodes: Collects and transfers customer data. Each node consists of a 1U server. One node services the BLUE zone (NetWall BLUE) and the other services the RED zone (NetWall RED).