Modifying FTP user' rights/permissions/upload criteria
I have a few FTP users on my linux server(running vsftpd). They all have their own directory and can upload and delete files in that folder.
Now, I was wondering whether it would be possible to create special permissions/rights for users. For example, I would like to make it so that certain users could not upload .exe files, or I want a certain user to only be able to upload image files (gif, jpg).
Is that possible to do?