SSL Certificate

In order to secure the connection between WHMCS and FreeNAS, it is recommended to install an SSL certificate on the FreeNAS server. Under System -> General an SSL certificate can be installed.
This SSL Certificate can then be used to provide SSL secured FTP access (FTP over SSL): http://doc.freenas.org/9.3/freenas_services.html#encrypting-ftp

General Options

You may want to customize welcome messages for SSH and FTP to reflect your company name instead of FreeNAS.

After a configuration change has been made, the corresponding service must be restarted. The restart is done in the menu Control Services.