Restricting FTP user access

[philgaskin]

I have now added several users to my B3 and allowed only one user SSH access which is also blocked on the WAN port. At this stage I am also blocking FTP on the WAN port but intend opening this up soon.
My problem is that I don't automatically want every B3 user to be allowed FTP access to B3; yet the B3 automatically creates an FTP account for every user added.
I have looked through the proftpd config files but cannot seem to find where users are defined.
Can anyone shed any light on this?
Thanks
Phil.

[RandomUsername]

You can dissallow users by listing them in /etc/ftpusers. Just interested in why you're worried. From what I can remember, users will still only have access to the same directories as they do with other protocols (i.e. the ftp root folder defaults to the users' Home directory).

[philgaskin]

Thanks for the response. It is mainly because I use my B3 for home use and consequently have set up really insecure passwords for my children (the same as their username. I just want to stop anyone from easily accessing any files they may have by guessing passwords. I used to have a little NAS drive with FTP and it was constantly hit by brute force attacks.
I just want to allow users with secure passwords access externally.