Most are very familiar with a software firewall. They are a check off box for network security.
Data diodes were designed on uncompromising technology intended to stop all unauthorized access to nuclear weapon systems.
They enforce a physical separation or "air-gap" between network segments that is enforced by the laws of physics, which are immutable and absolute - data will never be able to flow in the opposite direction, and therefore attackers will never be able to access networks through a data diode.
Integra Systems, Inc. has partnered with Owl Cyber Defense to drive new solutions through the medical device and healthcare space. See attached "What the Difference Between Firewalls & Data Diodes and CyberSecurity Best Practices.
www.owlcyberdefense.com