Using HTTP Proxy : Sphere not connecting to IOT central

We have a scenario where we have a internal WIFI network that has no internet connection.

On the same internal network, we have a linux machine with Squid Proxy installed.

The sphere's are connecting to the private WIFI network and are configured to use the proxy.

The list-interfaces command verifies that the ConnectedToInternet is TRUE

However the spheres are unable to communicate with DPS / IOT Hub (IOT Central) - error reported is PROV_DEVICE_RESULT_DEV_AUTH_ERROR

If we switch to a wifi network that has internet connectivity - and disable the proxy config on the sphere - all works fine - so we know our allowed connections are fine.

ALL restrictions on the proxy have been disabled - allowing all traffic through.
I'm also able to browse any site without issue via the proxy from my laptop.

Any advise would be appreciated!

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SatishBoddu-MSFT · Mar 16 at 05:56 PM

Hello @DonovanBellBritehouse-2127 I hope you have tried the samples from the below docs,

Troubleshoot network problems

Authentication methods
The following authentication methods are supported:

Basic: Prompts the user for a user name and password to authenticate the connection.
Anonymous: Allows users to connect anonymously so that user name and password are not required when using the proxy server connection.

Connect Azure Sphere through a proxy server

Please do check these Azure Sphere Proxy Sample as well: The proxy code snippets

The AzureIoT sample contains instructions and code for adding web proxy support to the sample.

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