Hi,
Thank you for posting in Microsoft Q&A forum.
1,==>Would there be any ports requirement needs to be opened for co-management thing?
No, no additional ports are required for co-management.
2,==>From the Intune perspective, do we need to do any settings or just enabling it using cloud attach is sufficient since we can see all devices are into Intune as automatic enrollment is enabled?
If the prerequisites are met and SCCM Client Setting is set to configure Configuration Manager clients to automatically register with Microsoft Entra ID, we do not need to any other settings. Refer to:
Tutorial: Enable co-management for existing Configuration Manager clients
3,==>Basically, how devices can be co-managed. Please share the best practices here.
There are no best practices for co-management. It depends on the real production environment and different business needs that everyone faces. You can follow below guides to enable co-management:
Tutorial: Enable co-management for existing Configuration Manager clients
Enroll a Windows device automatically using Group Policy
How to enable co-management in Configuration Manager
Hope it helps.
Best regards,
Simon
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