Guided Industrial Policy Engineering

Effective industrial protection should not depend on memorizing protocol field names or writing every condition from the beginning. L2Proxy provides a guided engineering workbench that helps users discover available protocol information, understand industrial helpers, reuse reviewed templates, and validate rules before deployment.

Customer outcome: move from an industrial requirement to a valid, reusable rule faster and with fewer avoidable syntax, field-selection, and mapping errors.

Purpose and expected outcome

This section explains how engineers create valid, reusable industrial policy without memorizing the complete technical vocabulary. After reading it, the customer should understand the available search, autocomplete, helper guidance, templates, validation, and policy-reuse workflow.

One guided engineering workflow

Describe the industrial intent
        ↓
Find protocol fields and semantic helpers
        ↓
Use contextual completion and inline guidance
        ↓
Start from a reviewed industrial template where available
        ↓
Validate the expression and complete rule
        ↓
Reuse it in an Access Policy and Policy Profile

Figure — Engineering workbench workflow aligns to the policy engineering lifecycle.

Built-in assistance

Capability	Engineering benefit
Searchable protocol catalog	Shows what the deployed parser can actually expose
Contextual autocomplete	Suggests relevant fields, helpers, operators, and values while authoring
Inline help	Explains helper purpose, parameters, return value, and expected use
Protocol helper catalog	Provides stable industrial concepts such as device, point, control, and value access
Reusable templates	Starts from reviewed source, destination, equipment, and operation conditions
Validation	Finds invalid syntax and unsupported expressions before policy rollout
Metadata guidance	Helps attach useful equipment and operation facts to rule-match events
Learning examples	Demonstrates stateless and multi-state industrial patterns

Designed for different users

• An OT engineer can begin from equipment and operation terminology.
• A protocol specialist can inspect exact fields and helper behavior.
• A security engineer can compose conditions and enforcement outcomes.
• A reviewer can examine the generated rule and its validation result.

The workbench exposes necessary technical depth without requiring every customer user to become a protocol dissector developer.

Reuse across the product

The resulting rule is not an isolated text fragment. It can be saved as reusable library content, selected in the Guided Policy Composer, enriched with event metadata, assembled into a Policy Profile, and activated through an L2Proxy Service Profile.

Industrial examples included

• Identify a DNP3 device, point, measurement, or control operation.
• Compare an analog value with an approved threshold.
• Recognize approved breaker, recloser, or relay commands.
• Extract useful values for human-readable rule-match evidence.
• Build Select-Before-Operate and other multi-event patterns.
• Start from curated examples for DNP3, IEC 60870-5-104, Modbus, and S7comm at their documented maturity levels.

Continue with Guided Rule Authoring.