The DeltaV™ Firewall-IPD is a hardware device that is installed within a DeltaV network between the embedded nodes and workstations. The DeltaV Firewall-IPD provides an additional layer of cybersecurity protection that can be installed within the DeltaV control network. It functions to provide additional protection for embedded nodes installed on the secure side of the firewall against message flooding and denial-of-service attacks originating from the workstation side of the firewall.