Deep Packet Inspection for SCADA Security

White paper Tofino Security

Download the technical brief to learn more about how DPI can improve the reliability & availability...


In this White Paper:

  • SCADA/ICS protocol challenges & the need for Deep Packet Inspection (DPI) 
  • How DPI improves industrial system security & reliability
  • The need for DPI given increasing number of advanced malware attacks
  • DPI solutions for securing Ethernet/IP, Modbus & OPC Classic protocols


"Traditional IT firewalls either allow a certain protocol or block it. More granular protocol control is impossible.”

"SCADA ICS protocols themselves have no granularity. For the port number, a data read message looks EXACTLY like a firmware update message."

"Allowing data-read messages (from an HMI to a PLC) to pass through a traditional firewall is equal to allowing programming messages to pass through."

"A DPI firewall inspects content contained in messages and applies highly detailed rules. It is designed to understand specific SCADA protocols and apply those filters to fields and values relevant to control systems."

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Belden Inc. and its subsidiary companies and brands include: Belden Deutschland GmbH; Hirschmann Automation and Control GmbH; Belden Wire & Cable B.V.; GarrettCom; Lumberg Automation, and Tofino Security.