Hi Matt.
As far as I understand how Azure Arc works, your scenario is a no-go...
Azure ARC (agent) requires internet access. More info here: Connected Machine agent network requirements - Azure Arc | Microsoft Learn
Consider the following basic requirements when planning your deployment:
- Your machines must run a supported operating system for the Connected Machine agent.
- Your machines must have connectivity from your on-premises network or other cloud environment to resources in Azure, either directly or through a proxy server.
- To install and configure the Azure Connected Machine agent, you must have an account with elevated privileges (that is, an administrator or as root) on the machines.
- To onboard machines, you must have the Azure Connected Machine Onboarding Azure built-in role.
- To read, modify, and delete a machine, you must have the Azure Connected Machine Resource Administrator Azure built-in role.
All the best,
Joze
Microsoft