I have an FTP server(proftpd on debian) that I'm going to allow a couple friends access to, and I want some safety nets in place, just in case.

These are some of the things I'd like to do:

• Jail the accounts to their home directories and impose a cap on the amount of data they can upload
• Allow them access to a shared folder(via symlink or something) where they have full access(Also with a storage cap, but larger)
• Allow my own account full access to the system(Using groups I guess)
• Not allow anonymous access, or allow it with its own folder, separate from the shared user folder

Currently, I've got the accounts set up and jailed, but it seems like the symlink that I put in is not allowing them to visit the shared folder. I suppose this has to do with them not having read permissions anywhere but their own home directories, or maybe it's something else, I'll continue to look into it and provide any information that is requested.

Is what I'm trying to do possible? Any tips or resources that you can share are appreciated. Thanks.