{"id":3006,"date":"2026-03-20T14:52:33","date_gmt":"2026-03-20T13:52:33","guid":{"rendered":"https:\/\/www.seclab-security.com\/?post_type=avada_faq&p=3006"},"modified":"2026-04-01T19:54:51","modified_gmt":"2026-04-01T17:54:51","slug":"electronic-airgap-vs-data-diode-whats-the-difference","status":"publish","type":"avada_faq","link":"https:\/\/www.seclab-security.com\/en\/faq-items\/electronic-airgap-vs-data-diode-whats-the-difference\/","title":{"rendered":"Electronic AirGap vs. Data Diode: What\u2019s the Difference?"},"content":{"rendered":"
\n

The main difference lies in the direction of communication: a data diode enforces a strictly unidirectional flow, while the Electronic AirGap provides equivalent physical isolation while allowing secure bidirectional exchanges.<\/strong><\/p>\n

Structural limitations of a data diode<\/strong>
\nA network diode is effective for one-way information flows (to a SOC or Historian, for example). However, many OT use cases require two-way communication: remote administration, file synchronization, industrial protocols with acknowledgments. Some solutions bypass this limitation by combining two diodes with synchronization gateways, which increases complexity and introduces high latency.<\/p>\n

\n

What Electronic AirGap adds<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n
Criteria<\/th>\nData diode<\/th>\nElectronic Air Gap Seclab<\/th>\n<\/tr>\n<\/thead>\n
Communication direction<\/td>\nUnidirectional only<\/td>\nUnidirectional et bidirectional<\/td>\n<\/tr>\n
Physical isolation<\/td>\nYes<\/td>\nYes (protocol break)<\/td>\n<\/tr>\n
Bidirectional throughput<\/td>\n\n
Not applicable (or severely degraded via double diode)<\/span><\/div>\n<\/td>\n
Up to 800 Mbps<\/td>\n<\/tr>\n
\n
Additional software on network side<\/span><\/div>\n<\/td>\n
Often required<\/td>\nNot required<\/td>\n<\/tr>\n
Resistance to internal compromise<\/td>\nPartial<\/td>\nYes (3-compartment processor architecture)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

 <\/p>\n

The Electronic AirGap therefore combines the strict isolation of a diode with the operational flexibility required by modern industrial environments.<\/p>\n

\n

Key takeaway<\/strong>– Electronic AirGap provides the same level of physical isolation as a data diode, but supports bidirectional communications up to 800 Mbps, without additional software components and without compromising security.<\/p>\n<\/blockquote>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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