1.vsftpd.conf配置如下：
# Example config file /etc/vsftpd/vsftpd.conf
anonymous_enable=YES
local_enable=YES
anon_root=/var/ftp/pub
write_enable=YES
anon_umask=022
anon_upload_enable=YES
anon_mkdir_write_enable=YES
dirmessage_enable=YES
xferlog_enable=YES
chown_uploads=NO
async_abor_enable=YES
ascii_upload_enable=YES
ascii_download_enable=YES
ftpd_banner=Welcome to FTP service.
listen=NO
listen_ipv6=YES
anon_world_readable_only=no
anon_other_write_enable=YES
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
accept_timeout=5
connect_timeout=1
use_localtime=YES
listen_port=21
chroot_local_user=YES
idle_session_timeout=300
data_connection_timeout=1
guest_enable=YES
guest_username=vsftpd
user_config_dir=/etc/vsftpd/vconf
virtual_use_local_privs=YES
pasv_min_port=10060
pasv_max_port=10090
