Gigabit Data Diode copper in, copper out


  • The GT-xxSD is a 1000Mbps Ethernet copper  to copper data diode that assures one way data transmission across a fibre link. A totally hardware based solution the CF-xxSD is a Layer 1 device and operates at wire speed for optimal performance. Desktop or rack-mountable the GT-xxSD takes data security to new levels.
  • Guaranteed one way transmission
  • No physical return path
  • Totally hardware based solution with optical separation/partition between input/outputs
  • Tamper proof casing
  • Independent power supplies for both High and Low side


Technical Notes

Why do I need a data diode ?

Data diodes play an integral part in securing the most critical business assets, protecting the most valuable data and ensuring operational continuity.

The physical nature of a data diode ensures data can only ever flow in one direction. Typically they are deployed at the boundary between a high security environment and a lesser network, data diodes stand guard at this intersection where unrestricted two-way communications would otherwise increase the risk of malicious attack and data loss.

Configuring ARP for use across Data Diodes

Address Resolution Protocol (ARP) is a protocol used to ascertain the hardware address or Media Access Control (MAC) address from an IP address. Typically a sending station knows the destination IP that they wish to send to but does not the MAC address.  Before communication between the 2 hosts can occur an ARP request is sent to discover the destination MAC address.  The ARP request is directed to the destination IP address using a MAC broadcast address FF:FF:FF:FF:FF:FF.  All devices on the subnet receive this broadcast but only the destination with the correct IP address will respond.


Item Description

IEEE 802.3ab    1000BASE-T


1000 Mbps


Twin 100 ~ 240 VAC Auto-ranging wall-mount;
Twin 9 - 48 VDC input plus Terminal Block option


Operating: 0° to 50°C

Storage: -20° to 70°C


Operating:  10% to 80% RH

Storage:  5% to 90% RH


FCC Part 15, Class B


US21 CFR (J)

EN 60825-1

UL 1950

EN 60950: Pending




Ordering Information

Order Code Description
GT-10SD Gigabit Data Diode with internal fibre link

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