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Dell Unity™ Family Unisphere® Command Line Interface User Guide

Manage FTP settings

File Transfer Protocol (FTP) is a client/server protocol that operates over TCP/IP and allows file sharing across heterogeneous systems. Secure File Transfer Protocol (SFTP) protocol provides secure file transfer and manipulation functionality by using SSH.

You can configure a NAS server to share files using the FTP or SFTP protocol. Remote clients can be authenticated using a Unix or Windows user name. You can also have the FTP service to accept anonymous user authentication.

Table 1. FTP and SFTP attributes for a NAS server
Attribute Description
NAS server Associated NAS server identifier.
FTP enabled Indicates whether the FTP protocol is enabled. Valid values are:
  • yes
  • no (default)
SFTP enabled Indicates whether the SFTP protocol is enabled. Valid values are:
  • yes
  • no (default)
CIFS users enabled Indicates whether Windows (SMB) users can be authenticated by the FTP or SFTP server. Valid values are:
  • yes (default)
  • no
Unix users enabled Indicates whether Unix users can be authenticated by the FTP or SFTP server. Valid values are:
  • yes (default)
  • no
Anonymous user enabled Indicates whether the FTP server supports anonymous user authentication. Valid values are:
  • yes (default)
  • no
Home directory limitation enabled Indicates whether authenticated FTP or SFTP users are limited to their home directories. Valid values are:
  • yes (default)
  • no
Default home directory Indicates the default home directory for the FTP or SFTP users with no defined or accessible home directory.
Welcome message Indicates the welcome message that appears to FTP or SFTP users before authentication.
Message of the day Indicates the message of the day that appears once the FTP or SFTP users log on.
Audit enabled Indicates whether the FTP or SFTP server has audit file collection enabled. Valid values are:
  • yes
  • no
Audit files directory Specifies the directory where the audit files for the FTP or SFTP server are stored.
Audit file maximum size Specifies the maximum file size of the audit files. When the maximum is reached, a new audit file is created.
Allowed hosts Specifies a comma-separated list of host IPs that are allowed access to the FTP or SFTP server. The IP can be the IPv4, IPv6, or subnet address.

For subnets, the following notation convention must be used:

  • 10.0.0.1/10
  • 2000:DB1::/10
Network names are ignored.
NOTE:If this option is specified, FTP/SFTP connections are allowed only for clients whose IP addresses are included in those specified in the allowed hosts list. Any clients whose IP is not specified in this list are denied access. If a subnet is defined in the allowed hosts list, the client IP must belong to the specified subnet to be allowed to connect to the NAS server. If defined, denied hosts cannot be defined.
Allowed users Specifies a comma-separated list of user names that are allowed access to the FTP or SFTP server (numerical user IDs are invalid and ignored).
NOTE:If this option is specified, FTP/SFTP connections are allowed only for the specified users. Any users not specified in this list are denied access. If defined, denied users cannot be defined.
Allowed groups Specifics a comma-separated list of user groups that are allowed access to the FTP or SFTP server. Specify the name of the group (numerical group IDs are invalid and ignored).
NOTE: If this option is specified, FTP/SFTP connections are allowed only for the listed groups. Any user groups not specified in this list will be denied access. If defined, denied groups cannot be defined.
Denied hosts Specifies a comma-separated list of host IPs that are denied access to the FTP or SFTP server. The IP can be the IPv4, IPv6, or subnet address.

For subnets, the following notation convention must be used:

  • 10.0.0.1/10
  • 2000:DB1::/10
Network names are ignored.
NOTE:If this option is specified, FTP/SFTP connections are denied only for clients whose IP addresses or subnet addresses are included in this list. If defined, allowed hosts cannot be defined.
Denied users Specifies a comma-separated list of user names that are denied access to the FTP or SFTP server (numerical user IDs are invalid and ignored).
NOTE:If this option is specified, FTP/SFTP connections are denied only for the specified users. Any users not specified in this list are allowed access. If defined, allowed users cannot be defined.
Denied groups Specifics a comma-separated list of user groups that are denied access to the FTP or SFTP server. Specify the name of the group (numerical group IDs are invalid and ignored).
NOTE: If this option is specified, FTP/SFTP connections are denied only for the listed groups. Any user groups not specified in this list will be allowed access. If defined, allowed groups cannot be defined.

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