The IP 115.239.228.4 has just been banned by Fail2Ban after 18 attempts against SSH. Latest lines containing IP:115.239.228.4 in /var/log/syslog/sshd.log Jan 25 19:19:07 ftlogin2 sshd[549]: error: PAM: Authentication failure for root from 115.239.228.4 Jan 25 19:19:07 ftlogin2 sshd[549]: Failed keyboard-interactive/pam for root from 115.239.228.4 port 46739 ssh2 Jan 25 19:19:08 ftlogin2 sshd[554]: Postponed keyboard-interactive for root from 115.239.228.4 port 46739 ssh2 Jan 25 19:19:09 ftlogin2 sshd[549]: error: PAM: Authentication failure for root from 115.239.228.4 Jan 25 19:19:09 ftlogin2 sshd[549]: Failed keyboard-interactive/pam for root from 115.239.228.4 port 46739 ssh2 Jan 25 19:19:13 ftlogin2 sshd[558]: error: PAM: Authentication failure for root from 115.239.228.4 Jan 25 19:19:13 ftlogin2 sshd[561]: Postponed keyboard-interactive for root from 115.239.228.4 port 37627 ssh2 Jan 25 19:19:15 ftlogin2 sshd[558]: error: PAM: Authentication failure for root from 115.239.228.4 Jan 25 19:19:15 ftlogin2 sshd[558]: Failed keyboard-interactive/pam for root from 115.239.228.4 port 37627 ssh2 Jan 25 19:19:15 ftlogin2 sshd[561]: Postponed keyboard-interactive for root from 115.239.228.4 port 37627 ssh2 - Fail2ban on