touch /etc/vsftpd.user_list
(使其为空)
nano /etc/vsftpd.conf
userlist_deny=YES
local_enable=YES
write_enable=YES
listen=YES
chroot_local_user=NO
userlist_enable=YES
local_umask=022
use_localtime=YES
nano /etc/pam.d/vsftpd
#auth required pam_listfile.so item=user sense=deny