Examine this output:
$ ftp o16.example.com
Connected to o16.example.com (192.168.40.131)
220 (vsFTpd 2.2.2)
Name (o16.example.com:oracle):
A carriage return is now entered on the keyboard and the result is shown:
$ 30 permission denied.
Login failed.
ftp>
Why is the oracle user denied access to the FTP server on the 016.example.com host?
A.
The Oracle user is listed in /etc/vsftpd/ftpusers.
B.
The oracle user is listed in /etc/vsftpd/user_list and the USERLIST_ENABLE setting is set to
YES in /etc/vsftpd/vsftpd.conf.
C.
The Oracle user is listed in /etc/vsftpd/user_list and USERLIST_ENABLE setting is set to NO in
/etc/vsftpd/vsftpd.conf.
D.
The LOCAL_ENABLE setting is set to NO in /etc/vsftpd/vsftpd.conf.
E.
The Oracle user does not exist on the o16.example.com host.
Explanation:
B
B is correct na ka
B
B
The answer is B
===============
userlist_enable:
If enabled, vsftpd will load a list of usernames, from the
filename given by userlist_file. If a user tries to log in
using a name in this file, they will be denied before they are
asked for a password. This may be useful in preventing cleartext
passwords being transmitted. See also userlist_deny.
Default: NO
B