Industrial Firewalls

The Benefits of Firewalls Between IT and OT

Operational Technology (OT) networks require stringent security measures to prevent cyber threats from disrupting industrial processes. While IT security focuses on protecting data, OT security prioritizes uptime, safety, and reliability. Firewalls each play a critical role in securing OT environments by ensuring controlled data flow, enabling visibility, and enforcing strict access controls. Firewalls should be paired with a network monitoring technology and a segmentation strategy. Together, these technologies create a robust defense against cyber threats while maintaining operational continuity.

• Network Segmentation – Firewalls create strong separation between IT and OT networks, restricting access based on role, device, or protocol.
• Threat Containment – If an IT network is breached, an OT firewall prevents malware, ransomware, or unauthorized users from spreading into critical industrial systems.
• OT-Specific Threat Protection – Solutions like the Fortinet Rugged Firewall are built for harsh environments and include thousands of malware signatures tailored to OT-specific threats.
• Protocol Filtering – Firewalls enforce security policies by controlling industrial protocols, blocking unauthorized commands, and preventing lateral movement within OT networks.