I have the necessity to have a multiples isolated sftp enviroment overs ssh to use it for file transfer from more customers to the admin compnay.
The admin account (the company) will be able to read and download all files of the customers folder.
i have followed this article to setup one chroot enviroment,
but with this mode, there are more customers accounts and there is not an admin chroot account (the root user can not be the admin account!)
how can setup a multiple chroot enviroment to serve multiple admin account with multiple customers account? in a secure way..!