EtherNet/IP & CIP
Object-oriented industrial networking for manufacturing.
Protocol Functionality
EtherNet/IP maps the Common Industrial Protocol (CIP) over standard Ethernet networks. Widely used in Rockwell Automation (Allen-Bradley) environments, it allows controllers to exchange real-time I/O data (implicit messaging) and execute remote configurations (explicit messaging) simultaneously.
Active Scan Crash Hazards
CIP controllers organize configurations into complex, nested object trees. IT-centric scanners sweep these nodes with heavy, overlapping queries to map firmware vulnerability logs. Parsing these explicit messages consumes massive CPU cycles. Under tight millisecond production loops, this resource starvation trips PLC watchdogs, halting the processor.
Deterministic Safe Discovery
Solapse uses a lightweight, unauthenticated CIP Identity query. We establish a clean single session and call only Class 0x01, Instance 0x01 (Identity Object) to retrieve the product name, model revision, and manufacturer ID. Probes are dynamically paced to fit into unused network cycle windows.
Security Best Practices
- Restrict Port 44818 explicitly to engineering and HMI workstations.
- Configure CPU keys in physical RUN mode to block remote script executions.
- Audit CIP configurations to detect unauthorized firmware changes.
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