This post introduces to OT or ICS communication protocols.
List of ICS Communication Protocols
ICS communication protocols featured on this post:
- Distributed Network Protocol 3 (DNP3)
- Modbus
- IEC 61850
Distributed Network Protocol 3 (DNP3)
You can read more about DNP3 on this post.
Modbus
Modbus is older than SCADA.
IEC 61850
IEC 61850 is an international standard defining communication protocols for intelligent electronic devices at electrical substations.
IEC 61850 maps to these protocols, as of 2021:
- Manufacturing Message Specification (MMS)
- GOOSE (Generic Object Oriented System Event)
- SV (Sampled Values)
- SMV (Sampled Measure Values)
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External References
- Miguel Herrero Collantes, Antonio López Padilla; “Protocols and network security in ICS infrastructures“, INCIBE