Use a firewall device to defend Azure Stack against security threats. For Microsoft’s recommendations about firewall integration, see Azure Stack Hub firewall integration.
For assistance in planning for the firewall integration, see Publish Azure Stack Hub services in your datacenter, which is part of the Azure Stack Hub Operator Documentation. The article lists the inbound and outbound ports and protocols that Azure Stack Hub requires.
Dell Technologies maintains a Deployment Worksheet that contains more extensive firewall rules. This worksheet is provided during the planning phase of a deployment project. For more information, contact the Project Manager who is assigned to your deployment.
The following links contain detailed scenarios for firewall integration and best-practice recommendations.