The IP 183.136.216.4 has just been banned by Fail2Ban after 18 attempts against SSH. Latest lines containing IP:183.136.216.4 in /var/log/syslog/sshd.log Jan 25 19:24:21 ftlogin2 sshd[2331]: Postponed keyboard-interactive for root from 183.136.216.4 port 54239 ssh2 Jan 25 19:24:22 ftlogin2 sshd[2328]: error: PAM: Authentication failure for root from 183.136.216.4 Jan 25 19:24:22 ftlogin2 sshd[2328]: Failed keyboard-interactive/pam for root from 183.136.216.4 port 54239 ssh2 Jan 25 19:24:22 ftlogin2 sshd[2331]: Postponed keyboard-interactive for root from 183.136.216.4 port 54239 ssh2 Jan 25 19:24:24 ftlogin2 sshd[2328]: error: PAM: Authentication failure for root from 183.136.216.4 Jan 25 19:24:24 ftlogin2 sshd[2328]: Failed keyboard-interactive/pam for root from 183.136.216.4 port 54239 ssh2 Jan 25 19:24:27 ftlogin2 sshd[2498]: error: PAM: Authentication failure for root from 183.136.216.4 Jan 25 19:24:27 ftlogin2 sshd[2501]: Postponed keyboard-interactive for root from 183.136.216.4 port 44855 ssh2 Jan 25 19:24:29 ftlogin2 sshd[2498]: error: PAM: Authentication failure for root from 183.136.216.4 Jan 25 19:24:29 ftlogin2 sshd[2498]: Failed keyboard-interactive/pam for root from 183.136.216.4 port 44855 ssh2 - Fail2ban on