VSFTPD configuration problems with 12.04

Solution 1:

In vsftpd.conf

Make the following change : pam_service_name=ftp

Save your change and restart the ftp server.

Solution 2:

There are several Reason why you may get this reason.

Firewall-->>Tcp_wrapper-->>PAM-->>SElinux-->>FTPService-->> File.

1. First Check if the given user is blocked or not in /etc/vsftpd/ftpusers /etc/vsftpd/user_list

2. Check SElinux Context or Boolean for the Same.

3. Check in PAM directory file. /etc/pam.d/vsftpd

auth required pam_shells.so

if user is not having required shell like in /etc/shells then it will give same error check getent passwd username match given shell with /etc/shells.