vsftpd - lightweight ftp server minimal configuration

#### vsftpd ####

$ cd /etc/vsftpd/; ls;
ftpusers  issue  user_list  vsftpd.conf  vsftpd_conf_migrate.sh


--- NOTE ---
File named `ftpusers` & `user_list` must NOT contain `root` if one wants to __ENABLE__ root login via __FTP__
--- NOTE ---


$ echo IG FTP Server > /etc/vsftpd/issue
$ cat /etc/vsftpd/vsftpd.conf | grep -v "#"
$ nano /etc/vsftpd/vsftpd.conf

listen_port=21
local_root=/var/www/html

anonymous_enable=YES
local_enable=YES
write_enable=YES
local_umask=022
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
xferlog_std_format=NO
listen=YES

pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES

banner_file=/etc/vsftpd/issue
pasv_enable=YES
pasv_max_port=12100
pasv_min_port=12000
pasv_address=0.0.0.0