Ubuntu vsftpd create user with access to one directory but restrict ssh access

Question

I've created a user ftp_user and then i restricted its access to /var/www/html/folder. It worked just fine but then i found out that i could connect trough ssh using Putty with that ftp_user and its password.

Reading a little bit i came across some articles and one of them suggested to use this command:

root@server:~# usermod -s /sbin/nologin ftp_user

The problem is that after using this command when i try to connect trough ftp i'm getting this error:

530 Login incorrect.

So i did a little bit of research and came across an article that suggested to use this two commands:

root@server:~# usermod -s /etc/shells ftp_user
root@server:~# usermod -s /bin/false ftp_user

But i still get the 530 Login incorrect. response.

I'm using a digital ocean vps that runs Ubuntu 14.04.1.

Answer 1

I suppose that in order for the chroot to work you need to have a valid shell. If you really need the chroot you can block access via ssh and password with this option in the openssh config file:

DenyUsers ftp_user