From Apple OS X 10.12 Security Technical Implementation Guide
Part of SRG-OS-000074-GPOS-00042
Associated with: CCI-000197
The "ftp" service must be disabled as it sends all data in a clear-text form that can be easily intercepted and read. The data needs to be protected at all times during transmission, and encryption is the standard method for protecting data in transit.
To check if the "ftp" service is disabled, use the following command: /usr/bin/sudo /bin/launchctl print-disabled system | /usr/bin/grep com.apple.ftpd If the results do not show the following, this is a finding: "com.apple.ftpd" => true
To disable the "ftp" service, run the following command: /usr/bin/sudo /bin/launchctl disable system/com.apple.ftpd The system may need to be restarted for the update to take effect.
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