Network DMZ Creation
DMZ is a Protected Perimeter Network, which is “Wide-open-network” to the untrusted world.
The De-Militarized Zone is a segregation layer between the IT and OT network e.g. Segregating between Email Data and Plant Data and follows that of the ISA 99 and IEC 62443 requirements.
Considering that Email Phishing Attacks are the most common external threat, such a segregation is mandatory in any CyberSecurity Strategy.