WD My Book Live fail2ban 설치 실패기

MyBookLive:~# iptables -nvL

iptables v1.4.14: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)

Perhaps iptables or your kernel needs to be upgraded.

MyBookLive:~#

2013-11-28 23:13:26,227 fail2ban.actions.action: ERROR  Invariant check failed. Trying to restore a sane environment

2013-11-28 23:13:26,370 fail2ban.actions.action: ERROR  iptables -D INPUT -p tcp -m multiport --dports ftp,ftp-data,ftps,ftps-data -j fail2ban-vsftpd

iptables -F fail2ban-vsftpd

iptables -X fail2ban-vsftpd returned 300

2013-11-28 23:13:26,514 fail2ban.actions.action: ERROR  iptables -N fail2ban-vsftpd

iptables -A fail2ban-vsftpd -j RETURN

iptables -I INPUT -p tcp -m multiport --dports ftp,ftp-data,ftps,ftps-data -j fail2ban-vsftpd returned 300

2013-11-28 23:13:26,564 fail2ban.actions.action: ERROR  iptables -n -L INPUT | grep -q fail2ban-vsftpd returned 100

2013-11-28 23:13:26,565 fail2ban.actions.action: CRITICAL Unable to restore environment

2013-11-28 23:14:49,666 fail2ban.actions: WARNING [vsftpd] 000.000.000.000 already banned