Gigabit Data Diode, redundant backup link with fibre user ports


  • The GF-xxRD is a 1000Mbps Ethernet fibre to fibre data diode that assures one way data transmission. A totally hardware based solution the GF-xxRD is a Layer 1 device and operates at wire speed for optimal performance. Desktop or rack-mountable the GF-xxRD takes data security to new levels.
  • Redundant fibre link for criticat applcations
  • No vulnerable software, firmware, memory or buffers that may otherwise be exploited.
  • Tamper proof casing
  • Guaranteed one way transmission
  • No physical return path


Technical Notes

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 802.3z    1000BASE-X, SX, LX


1000 Mbps


Operating: 0° to 50°C

Storage: -20° to 70°C


Operating:  10% to 80% RH

Storage:  5% to 90% RH


US21 CFR (J)

EN 60825-1

UL 1950

EN 60950: Pending


D x W x H  127mm x 203mm  x 44mm



Ordering Information

Order Code Description
GF-55RD Gigabit Transmit Diode with dual link (SC multi-mode)
GF-55TR Gigabit Receive Diode with dual link (SC multi-mode) and dual user ports
GF-31RD Gigabit Transmit Diode with dual link (SC single-mode)
GF-31TR Gigabit Receive Diode with dual link (SC single-mode) and dual user ports

More Information