# cat /etc/vsftpd.conf | grep -v "^#\|^$^"
anonymous_enable=NO
local_enable=YES
virtual_use_local_privs=YES
write_enable=YES
pam_service_name=vsftpd
guest_enable=YES
user_sub_token=$USER
local_root=/var/ftp/$USER
chroot_local_user=YES
hide_ids=YES

# cat /etc/pam.d/vsftpd | grep -v "^#\|^$^"
auth            required        pam_userpass.so
auth       required     pam_userdb.so use_first_pass db=/etc/vsftpd/vsftpd-virtual-user
account    required     pam_userdb.so db=/etc/vsftpd/vsftpd-virtual-user
session    required     pam_loginuid.so