Unidirectional network

Network device that permits data flow in only one direction

Summary

A unidirectional network is a network appliance or device that allows data to travel in only one direction. Data diodes can be found most commonly in high security environments, such as defense, where they serve as connections between two or more networks of differing security classifications. Given the rise of industrial IoT and digitization, this technology can now be found at the industrial control level for such facilities as nuclear power plants, power generation and safety critical systems like railway networks.

Originally created by Dr v

9/30/2006, 4:10:54 AM

Modified

3/3/2026, 5:58:36 PM

Recent revisions

MichielN3/3/2026, 5:58:36 PM

/* Notable vendors */ OPSWAT back in, as it does have a page

MichielN3/3/2026, 5:46:32 PM

/* Notable vendors */ Missed a few

MichielN3/3/2026, 5:46:05 PM

/* Notable vendors */ Removed the ones that aren't "notable" in a Wikipedia way

~2025-31089-7811/4/2025, 8:19:04 AM

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InternetArchiveBot10/19/2025, 4:39:03 AM

Rescuing 2 sources and tagging 0 as dead.) #IABot (v2.0.9.5

PeterWhittaker10/4/2025, 11:45:20 AM

/* Notable vendors */Added missing vendor

GKNishimoto8/27/2025, 9:04:25 PM

/* Notable vendors */Organizing alphabetically and removing duplicate item.

69.137.137.68/26/2025, 12:55:01 AM

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InternetArchiveBot7/30/2025, 3:48:36 AM

Rescuing 3 sources and tagging 0 as dead.) #IABot (v2.0.9.5

87.116.21.2125/26/2025, 7:59:19 AM

Removed www in URL

87.116.21.2125/26/2025, 7:57:59 AM

Updated URL

GKNishimoto5/24/2025, 1:42:45 AM
AndFrog5/17/2025, 2:57:15 PM

/* Notable vendors */ Added Arbit Cyber Defence Systems to the list

Opswat.brand5/16/2025, 11:49:26 PM

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78.186.186.2353/7/2025, 3:16:32 PM

Added a new sample vendor, added an article link about Air Gap/Data Diode Cyber Security.

192.116.36.822/10/2025, 1:14:09 PM

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94.180.179.2077/18/2024, 6:51:11 AM

Formatting (picture obscured the text or made the bullet list look ugly)

NickFend6/12/2024, 2:28:58 PM
GreenC bot6/9/2024, 5:17:20 PM

Move 1 url. [[User:GreenC/WaybackMedic_2.5|Wayback Medic 2.5]] per [[WP:URLREQ#google.com/patents]]

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Rescued 1 archive link. [[User:GreenC/WaybackMedic_2.5|Wayback Medic 2.5]] per [[WP:URLREQ#google.com/patents]]

Contributors

Source: WikipediaView full article