Offer proper sftp support through mysecureshell
It would be nice if Plesk by default installed sftp server software (such as http://mysecureshell.readthedocs.io/en/latest/ ) that allows granting the user sftp access to his home directory only, without having to grant the user full SSH shell access.
Right now Plesk seems to be promoting FTPS as alternative for securely transfering files, but that simply does not work properly when the end-user has a firewall or NAT setup. Or when you have iptables rules on the server.
This is caused by that FTPS uses multiple TCP ports like normal FTP.
However because the control connection traffic is encrypted, firewall software cannot determinate what the data port used is, and cannot let it through.
With SFTP everything travels over SSH port 22, so that doesn't suffer from this problem.
Thank you for your input! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.