Hi,
I consider that it needs CAL. A Windows Server CAL is a license that allows customers to access Windows Server. CALs are used in conjunction with Microsoft Windows Server OS licenses to allow Users and/or Devices to access and utilize the services of that server OS.
When are Client Access Licenses needed?
CAL requirements differ among server products. The general rule is that you must acquire
and assign a CAL to each device or user that accesses your server software. Depending on
the server product, there are Base licenses and Additive CAL licenses available and for some
server products External Connector licenses apply for the external users. Base CALs license
access to server functionality, while Additive CALs license access to advanced server
functionality and must be licensed in addition to the corresponding base CAL. External
Connector licenses are assigned to the server and allow access by external users.
Regards,