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Part 18 of the Industrial Networking: Serial to Ethernet training series 

Industrial control products need to be protected with a firewall and VPN just like a computer. Never put a device directly on the internet. A VPN router allows for a secure connection for communication with a device.

Long-time automation trainer Doug Bell, Interconnecting Automation, covers the basics of Industrial Networking with AutomationDirect’s Chris Harris. This video is produced by CFE Media to be noncommercial and educational. Runtime is approximately 3 minutes.