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- Add scripts/agent.py and references/api-reference.md to all remaining skills - Update all 648 LICENSE files: copyright now reads 'Mahipal' - Add implementing-security-monitoring-with-datadog (new skill with full anatomy) - All 649 skills now have: SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md
43 lines
1.4 KiB
Markdown
43 lines
1.4 KiB
Markdown
# API Reference — Performing OT Network Security Assessment
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## Libraries Used
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- **csv**: Parse asset inventories and firewall rule exports
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- **subprocess**: Execute nmap for OT protocol scanning
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- **xml.etree.ElementTree**: Parse nmap XML output
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## CLI Interface
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```
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python agent.py assets --csv ot_inventory.csv
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python agent.py segmentation --csv firewall_rules.csv
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python agent.py protocols --subnet 192.168.1.0/24
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python agent.py report --assets inventory.csv [--firewall fw_rules.csv]
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```
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## Core Functions
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### `assess_asset_inventory(csv_file)` — Purdue model zone analysis
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Groups assets by Purdue level. Flags end-of-life and unknown firmware.
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### `assess_network_segmentation(csv_file)` — Firewall rule audit
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Detects: direct IT-to-OT access (CRITICAL), allow-any-protocol rules (HIGH).
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### `scan_ot_protocols(target_subnet)` — OT protocol discovery
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Scans ports: 102 (S7), 502 (Modbus), 4840 (OPC-UA), 44818 (EtherNet/IP),
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47808 (BACnet), 20000 (DNP3).
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### `generate_assessment_report(...)` — Comprehensive report
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## OT Protocol Ports
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| Port | Protocol | Usage |
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|------|----------|-------|
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| 102 | S7Comm | Siemens S7 PLCs |
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| 502 | Modbus TCP | Industrial automation |
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| 4840 | OPC-UA | Industrial data exchange |
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| 44818 | EtherNet/IP | Allen-Bradley PLCs |
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| 47808 | BACnet | Building automation |
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| 20000 | DNP3 | SCADA/utility |
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## Dependencies
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System: nmap (optional, for protocol scanning)
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No Python packages required.
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