Fig. 24: Plant information network connected to an automation system
For the purposes of process control security, a general-purpose information system (IS) network
should not be considered a trusted network, not the least since such networks are normally
further connected to the Internet or other external networks. The IS network is therefore a
different lower-security zone, and it should be separated from the automation system by means
of a firewall. The IS and automation system networks should form separate domains.
Configuration and programming
Cyber security > Secure operation
2023/03/03
3ADR011074, 1, en_US
78