Creating and configuring a Cloud Server.Aruba Cloud provides each account (AWI-12345) with an FTP storage space for each active data center. The service is activated by the user. The first 50 GB of space are free.
Why does Aruba Controller have FTP enabled and connection to it ? For auditing security measures, either it should be configured as SFTP or it should be disabled. What are the impacts if same is disabled on the controller ?

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Aruba Central; Aruba AirWave Network Management; IMC Intelligent Management Center; Command-line interface; Web browser; Configuration menu; SNMP manager; Telnet; RMON1; FTP. 13. Data sheet aruba 2930F switch series.

Modifying the IAP Host Name Configuring Zone Settings on an IAP Specifying a Method for Obtaining IP Address Configuring External Antenna Configuring Radio Profiles for an IAP. Aruba Instant 6.5.1.0-4.3.1.0 | User Guide.
I have three domain at aruba.it and all work ok. Look here for how I have configured the ftp, but I think that there must be something else that block the connection, like a firewall or something else...