Netwall Introduction

NetWall provides unilateral or bilateral inter-zone data transfer and streaming across the zones. The zones are referred to as BLUE (inner) and RED (outer) and are joined by a PCI cable. This cable 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 unilateral and bilateral versions of NetWall are separate products. Unilateral NetWall transfers data from the BLUE zone to the RED zone only. In addition to all unilateral transfers and streams, Bilateral NetWall adds support for bidirectional TCP.

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 features

NetWall provides the following features:

• No network connection between inner network and outer network
• 1Gbit/sec transfer rate using PCI
• Full Protocol Break: Data Payload Only
• Guaranteed integrity of delivered data

Netwall 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).