FTP

File transfer protocol (FTP) uses TCP ports 20 and 21.

If you use FTP to transfer files to and from your storage system, the FTP port is required; otherwise, use FilerView or the following CLI command to disable the FTP port: options ftpd.enable off

FTP is not a secure protocol for two reasons:

When users log in to the system, user names and passwords are transmitted over the network in clear text format that can easily be read by a packet sniffer program.
These user names and passwords can then be used to access data and other network resources. You should establish and enforce policies that prevent the use of the same passwords to access storage systems and other network resources.
FTP server software used on platforms other than storage systems contains serious security-related flaws that allow unauthorized users to gain administrative (root) access and control over the host.

Starting with Data ONTAP 7.3.1, FTP over IPv6 is supported.

For a detailed description of the FTP support for your storage system, see the Data ONTAP File Access and Protocols Management Guide.

Parent topic: IP port usage on a storage system