XD Bridge™

Certified Cross Domain Solution

XD Bridge™ is an excellent platform for system integrators needing to build application-specific cross-domain guards.

XD Bridge brings unmatched flexibility, reduced costs, and high performance to cross-domain information transfer. It provides a fast and effective means to move data between systems of differing security levels.

A dual-guard, quad-diode cross domain appliance, XD Bridge:

  • Provides strong security at each system layer: hardware, operating system, and filters
  • Supports both unidirectional and fully bidirectional transfer modes
  • Features best-in-class performance with 1 Gb network interfaces delivering high throughput, low latency data transfer
The most cost-effective cross domain solution (CDS) in the market today, XD Bridge is available in a standard 1U 19" rack-mountable configuration for use in enterprise applications or in remote or isolated environments. Depending on your application requirements, multiple tactical form factors are also possible.

Flexible Filtering

Filters are available for both file transfer and streaming protocols such as full-motion video.

The XD Bridge file transfer filter can perform:
  • File type whitelist/blacklist
  • Antivirus scanning
  • XML schema validation

To meet unique requirements, the product’s design enables rapid development of data-filtering capabilities, including custom security policies and filters. In addition, Tresys offers a two-day filter development course that enables customers or integrators to easily develop custom filters.

XD Bridge™ provides a flexible, modular platform for deploying cross domain data transfer filters. Certified filters exist for file transfer and streaming applications. The architecture allows additional special purpose filters to be developed and deployed as requirements evolve.

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XD Bridge is listed on the UCDSMO Baseline with TSABI (Top Secret SCI and Below Interoperability) certification at PL-5 and a SABI (Secret and Below Interoperability) assessment.



18-7/8" x 26" x 1.75"


20 lb.


70W @ idle, 170W maximum


580 BTU max and 240 BTU typical

Power supply voltage

120 VAC

Ports (per side)

10/100/1000 Ethernet, ST Fiber – 1 transmit, 1 receive, USB 2.0 (boot only), VGA console, PS/2 keyboard

Protocols Supported

Unicast, Multicast, Broadcast

Throughput/ Latency*

700 Mbps/3 ms (unfiltered UDP)
Up to 24 streams of 1080p video

Operating temperature

-10° to 50°C

Storage temperature

-40° to 70°C

Altitude (unpressurized)

4,600 m. (15,000 ft.)


Maximum 90% noncondensing relative humidity

*Data type, size and filter dependent

XD Bridge Data Sheet