Data Diode Technology Can Help Solve Complex Cyber Security Issues

January 2013

Due to recent security incidents, there is now a significant debate with regard to what is the best way to protect Industrial Control Systems (ICS).

Generally, the debate focuses on whether networks should be isolated via an Air-Gap, or joined by well-configured Firewall(s) but the debate often misses a third option – Data Diodes.

This great article from Joost Bilj, at Fox-IT provide a background on Data Diodes:

Data Diode Technology Can Help Solve Complex Smart Grid Cyber Security Issues.

Shortly, I will be blogging an article looking at the relative merits of Firewalls, Air-Gaps and Data Diodes in these situations…



An EAL7 Data Diode is available from Nexor.


Author Bio – Colin Robbins

Colin Robbins is Nexor’s Managing Security Consultant. He is a Fellow of the IISP, and a NCSC certified Security and Information Risk Adviser (Lead CCP) and Security Auditor (Senior CCP). He has specific technical experience in Secure Information Exchange & Identity Systems and is credited as the co-inventor of LDAP. He also has a strong interest in security governance, being a qualified ISO 27001 auditor.


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