OT Cybersecurity for Data Center Automation Systems
Key Takeaway
How to secure operational technology in data centers — SCADA, BMS, PLCs, network segmentation, protocol-specific firewall rules, and NIST/IEC frameworks.
Quick Answer
OT cybersecurity in data centers addresses the security of SCADA, BMS, PLCs, SNMP-enabled PDUs, and UPS management cards. These systems require network segmentation, protocol-specific firewall rules, encrypted communications, and controlled vendor access following NIST SP 800-82 and IEC 62443 frameworks.
OT Attack Surface
- PLCs with default passwords and unencrypted protocols
- SNMP v1/v2c with community strings readable in plaintext
- BACnet with no built-in authentication (pre-BACnet/SC)
- Modbus with no authentication or encryption
- UPS and PDU network management cards with web interfaces
Network Segmentation
Isolate OT systems on a dedicated network segment or OT DMZ. Controlled access paths between IT and OT networks. No direct connectivity between OT devices and internet-facing systems.
Protocol Security
- Upgrade SNMP to v3 with authentication and encryption
- Use OPC-UA security mode for SCADA integration
- Deploy BACnet/SC where supported for encrypted building automation
- Firewall rules specific to Modbus (TCP 502), BACnet (UDP 47808), SNMP (UDP 161)
Frameworks
NIST SP 800-82 (Guide to ICS Security) and IEC 62443 (Industrial Automation Security) provide comprehensive guidance applicable to data center OT environments.
Need help with data center automation?
Texas-based licensed engineers — get a free, no-obligation assessment.
Frequently Asked Questions
Securing control systems (SCADA, BMS, PLCs, SNMP-enabled devices) that manage physical infrastructure. These are often overlooked in IT security programs but represent a significant attack vector.
No. OT systems should be isolated on a separate segment with controlled, audited access paths between IT and OT networks.
Still have questions about your setup? Talk to an engineer or call (210) 405-4248.