OT Cybersecurity Best Practices for SMBs: How to Remediate External OT Network Connections to the Internet

## Executive Summary This Dragos OT-CERT blog provides practical, actionable OT/ICS cybersecurity guidance for small and medium businesses: Step 1 shows how to identify internet-exposed OT assets using simple checks (ping 8.8.8.8 and netstat) and Step 2 gives prioritized remediation steps (restrict browsing and user email in OT, limit external connectivity to required ports/services, and tighten firewall rules); the post also promotes free OT-CERT resources and toolkits to help resource-constrained organizations improve their OT security posture.