ICS-pcap vs Endian 4i: 2026 Comparison
ICS-pcap is a free industrial control system security tool. Endian 4i is a commercial industrial control system security tool by Endian. Compare features, ratings, integrations, and community reviews side by side to find the best industrial control system security fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
ICS security teams building detection labs or training incident responders should use ICS-pcap as a reference library for actual industrial protocol traffic; the 542 GitHub stars and active contributor model means you're working with real packet captures instead of synthetic data. The tool's value sits entirely in NIST Identify and Detect functions, giving you baseline signatures and anomaly patterns for MODBUS, Profinet, and DNP3, but it won't help you with response automation or recovery orchestration. Skip this if you need a commercial PCAP repository with vendor support or a turnkey IDS; ICS-pcap is a free practitioner resource that only pays off if your team has the bandwidth to ingest and operationalize the captures themselves.
Mid-market and enterprise OT teams defending distributed industrial networks will value Endian 4i's ruggedized appliance form factor and native support for legacy protocols without requiring network redesign. The -20°C to +60°C operating range and DIN rail mounting are built for factory floors, not data centers, and the hybrid deployment option lets you start physical and shift virtual as your environment matures. Skip this if your sites run primarily IT-standard infrastructure or if you need NIST Respond capabilities; Endian 4i prioritizes continuous monitoring and resilience architecture over incident recovery workflows.
