Release Notes

4.1.1

Highlights

It is strongly recommended to upgrade to version 4.1.1.

• Fixed a bug where excessive logging would fill the device disk.

DD Engine

Bug fixes

• Excessive logging would fill the device disk. It is strongly recommended to upgrade to v4.1.1. In some cases, the previous version of the software might not start at all. To remediate this issue a complete reinstall using the Installer is required.

4.1.0

Highlights

The Data Diode Engine v4.1.0 introduces custom hardware as deploy target.

Summary

The DD Engine is a proxy software designed to work seamlessly with hardware data diodes to enable secure, one-way data flows between network zones. This makes for a modular implementation which allows the customer to choose the host machines on which the proxies run. The firmware includes a hardened Debian OS and support for several services, allowing protocol specific data transfer.

Components

The release of DD Engine includes the following components:

• DD Engine firmware:
  • Installer
  • Upgrade
• Services:
  • File Transfer
    • SFTP
    • SMB
    • NFS
  • HTTP
  • MQTT
  • OPC UA
  • TCP
  • UDP

DD Engine

Initial release of the Data Diode Engine.

HTTP

Initial release of the HTTP service for the Data Diode Engine.

File Transfer

Initial release of the File Transfer service for the Data Diode Engine.

MQTT

Initial release of the MQTT service for the Data Diode Engine.

OPC UA

Initial release of the OPC UA service for the Data Diode Engine.

TCP

Initial release of the TCP service for the Data Diode Engine.

UDP

Initial release of the UDP service for the Data Diode Engine.