SecureTunneling port forwarding

Question

# Overview

I'd like to use `SecureTunneling` to forward traffic from a PLC hanging off a Greengrass Core device as depicted below:

![Enter image description here](/media/postImages/original/IM2mbt-9H0ReCVwd4qFuysTw)

# Questions

Is this possible to achieve?    
If so, how do I instruct the Greengrass Core Device for do the forwarding?

# Background

The tutorials for the `SecureTunneling` Greengrass component give an overview of connecting to a Core device directly for SSH or HTTP, which is not exactly the same as this type of port forwarding operation:
https://docs.aws.amazon.com/iot/latest/developerguide/secure-tunneling-tutorial-open-tunnel.html

The page to setup a Secure Tunnel via AWS IoT allows entering a service, but the tutorials don't really show the syntax (if there is any) to achieve forwarding like this.

![Enter image description here](/media/postImages/original/IMg9WNk7EORLWgyoDT2_D9Eg)

Accepted Answer

Hi ttnickb. I don't think this is possible with the AWS-provided secure tunneling component. It's designed for accessing the Greengrass core device only. It's based on AWS IoT Device Client and that forwards to localhost.

You could create a custom component to achieve what you want. Possibly based on a fork of AWS IoT Device Client. This component is probably a good starting point: https://github.com/awslabs/aws-greengrass-labs-containerized-secure-tunneling

SecureTunneling port forwarding

Overview

Questions

Background

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