The below listed Firewall ports are required to allow in Microsoft Endpoint Manager infrastructure during the implementation in order to get Site communication, client communication, Distribution Point and WSUS/SUP communication . I gathered this information from TechNet articles Reference Link https://docs.microsoft.com/en-us/mem/configmgr/core/plan-design/hierarchy/ports?redirectedfrom=MSDN Source Destination UDP TCP Description Direction Client Management Point 10123/80/443 Client Notification/http/https UniContinue reading “Configuration Manager Firewall Ports Requirement”