implementing-ot-network-traffic-analysis-with-nozomi

# Implementing OT Network Traffic Analysis with Nozomi ## When to Use - When deploying passive OT network monitoring using Nozomi Networks Guardian sensors - When requiring asset visibility without active scanning in sensitive ICS environments - When building a Nozomi-based OT SOC with centralized management via Vantage or CMC - When integrating OT network monitoring with Fortinet, Splunk, or ServiceNow ecosystems - When monitoring compliance with IEC 62443 network segmentation policies **Do not use** for active vulnerability scanning of OT devices (see performing-ot-vulnerability-scanning-safely), for environments standardized on Dragos (see implementing-dragos-platform-for-ot-monitoring), or for IT-only network monitoring. ## Prerequisites - Nozomi Networks Guardian sensor (hardware, VM, or container) - Network TAP or SPAN port configured on monitored OT network segments - Nozomi Vantage (cloud) or Central Management Console for multi-sensor management - Nozomi Threat Intelligence subscription for updated detection signatures - Network architecture documentation for sensor placement planning ## Workflow ### Step 1: Deploy Guardian Sensors for Passive Monitoring ```python #!/usr/bin/env python3 """Nozomi Guardian Deployment Manager and Alert Analyzer. Manages Nozomi Guardian sensor deployment validation, asset inventory extraction, and threat alert analysis for OT environments. """ import json import sys from collections import defaultdict from datetime import date...