Здравствуйте, помогите пожалуйста разобраться.
Есть сервер на Debian 7. На нем стоит fail2ban.
Сейчас наблюдается атака, брутфорсят пароли к ftp.
Судя по логам fail2ban банит и сразу же разбанивает IP-адреса.
Даже не знаю куда копать... в гугле не нашел инфы, поэтому пришел сюда.
2014-12-05 03:28:34,157 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 03:57:10,930 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 04:07:11,607 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 05:06:00,369 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 05:16:01,032 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 05:46:50,166 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 05:56:50,879 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 06:56:18,757 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 07:06:19,428 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 07:36:19,248 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 07:46:19,868 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 08:45:53,588 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 08:55:54,256 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 09:26:35,321 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 09:36:35,989 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 10:37:19,063 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 10:47:19,724 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97
2014-12-05 11:16:43,709 fail2ban.actions: WARNING [proftpd] Ban 109.86.15.97
2014-12-05 11:26:44,363 fail2ban.actions: WARNING [proftpd] Unban 109.86.15.97