Add secure option for FTP (FTPS/SFTP)

[davidep (Davide Principi)]

At the times of virtual hosts implementation in ns7 we were thinking about FTPS, but then decided to not implement it because of the availability of a valid and simple alternative: SFTP. Furthermore, as FTP is clear-text, FTP-only accounts are used.

Enable ftp by default

NethServer 7 needs ftp for write access to virtual hosts. ftp access is disabled by default. I’d like to have it enabled by default, and I’d like to discuss pro and cons. AFAIK, ftp password is transmitted in clear text, but, if stolen, it’d give access only to the virtual host. How do webmasters work these days?