OT Network Security
Firewall Rules That Stop Production: Change Control for OT Firewalls
In an enterprise network, a bad firewall rule means a broken application and an angry ticket. At an industrial boundary it can mea...
Blogs
Insights on OT Cybersecurity, Functional Safety & Industrial Resilience.
OT Network Security
Specifying an NGFW for the IT/OT Boundary: 12 Questions to Ask Vendors
Most firewall comparisons are written by people selling firewalls. The result is a feature matrix where the author happens to lead...
OT Network Security
Your Next Generation Firewall Can Inspect Modbus. It Probably Is Not.
There is a common claim in OT security circles that next generation firewalls cannot see industrial protocols. It is not true, and...
OT Network Security
Passive OT IDS: What It Detects, What It Misses, and Where the Sensors Go
Passive intrusion detection is the default first monitoring control in operational technology, and for good reason. It does not sc...