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RustShield Modbus Gateway v0.1.0 Lab Preview

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@RustShieldLabs RustShieldLabs released this 10 May 09:17
v0.1.0-lab-preview
23dff2f

RustShield Modbus Gateway v0.1.0 Lab Preview publishes the first public proof of concept for stateful semantic filtering of Modbus TCP traffic in a local OT/ICS lab simulation.

What Is Included

  • Transparent Rust/Tokio TCP proxy for Modbus TCP traffic.
  • Strict MBAP/PDU framing and validation.
  • Passive observation of read responses for process-state tracking.
  • Stateful policy decisions for a protected Write Single Coil command.
  • Fail-safe blocking for unknown, stale, unsafe, or unsupported write paths.
  • Read-only local health and Prometheus-style metrics.
  • Reproducible loopback evidence with a synthetic PLC simulator.
  • Grafana/Prometheus demo assets for local visualization.

Validation

  • cargo fmt
  • cargo test: 26 tests passing
  • cargo check
  • cargo clippy --all-targets --all-features -- -D warnings
  • public-showcase sanitization scan for internal/private references

Scope And Safety Boundaries

  • Proof of concept only.
  • Local loopback simulation only.
  • No real PLC validation.
  • No production OT safety or security certification.
  • No cryptographic authentication claim.
  • Not a replacement for segmentation, access control, hardening, key management, or OT risk governance.
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