IoTMarketi · Guides
IoT Security Basics: Device, Network and OT Zones
IoT breaches often start with default passwords, cleartext protocols and flat networks. A practical checklist inspired by IEC 62443 zoning.
Why IoT security is different
Devices live for years, patching is hard, and OT cannot tolerate downtime. �Expose to cloud and forget� fails in industry.
Practical checklist
- Change default credentials
- Put admin UIs behind VLAN/VPN
- Use TLS and topic ACLs on MQTT
- Protect LoRaWAN keys
- Plan firmware update channels
- Define OT/IT security zones
Hardware role
Industrial routers provide firewall, VPN and cellular failover � part of the security design.
Takeaway
Security is the first line of the architecture, not a post-go-live ticket.
FAQ
Frequently Asked Questions
IoT cihazlari dogrudan internete a�ilmali mi?
M�mk�nse hayir. Y�netim i�in VPN, reverse tunnel veya broker �zerinden kisitli erisim tercih edin.
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