'IP reached maximum auth failures for a one day block'

2019-12-19 07:51:34,087 fail2ban.actions        [806]: NOTICE  [sshd] Ban 125.227.62.145
2019-12-19 11:43:53,644 fail2ban.actions        [806]: NOTICE  [sshd] Ban 125.227.62.145
2019-12-19 17:04:43,400 fail2ban.actions        [806]: NOTICE  [sshd] Ban 125.227.62.145
...

Jan 11 04:51:59 localhost sshd\[22518\]: Invalid user exd from 59.10.188.209 port 34844
Jan 11 04:51:59 localhost sshd\[22518\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.10.188.209
Jan 11 04:52:01 localhost sshd\[22518\]: Failed password for invalid user exd from 59.10.188.209 port 34844 ssh2
...

2020-01-11T04:51:43.469956beta postfix/smtpd[3307]: warning: unknown[61.142.247.210]: SASL LOGIN authentication failed: authentication failure
2020-01-11T04:51:49.161674beta postfix/smtpd[3307]: warning: unknown[61.142.247.210]: SASL LOGIN authentication failed: authentication failure
2020-01-11T04:51:54.745207beta postfix/smtpd[3307]: warning: unknown[61.142.247.210]: SASL LOGIN authentication failed: authentication failure
...

Jan 11 05:52:16 MK-Soft-VM5 sshd[9670]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.16.96.37 
Jan 11 05:52:18 MK-Soft-VM5 sshd[9670]: Failed password for invalid user aartjan from 187.16.96.37 port 44338 ssh2
...

Jan 11 08:27:47 124388 sshd[31351]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.238.13.206
Jan 11 08:27:47 124388 sshd[31351]: Invalid user test05 from 140.238.13.206 port 53510
Jan 11 08:27:49 124388 sshd[31351]: Failed password for invalid user test05 from 140.238.13.206 port 53510 ssh2
Jan 11 08:28:16 124388 sshd[31355]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.238.13.206  user=root
Jan 11 08:28:18 124388 sshd[31355]: Failed password for root from 140.238.13.206 port 57186 ssh2

Brute force attempt

Automatic report - Port Scan Attack

Jan 11 06:19:05 vps46666688 sshd[8743]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.48.209.85
Jan 11 06:19:08 vps46666688 sshd[8743]: Failed password for invalid user yhj from 117.48.209.85 port 47742 ssh2
...

Jan 11 09:28:57 ns382633 sshd\[11262\]: Invalid user test10 from 45.55.184.78 port 57694
Jan 11 09:28:57 ns382633 sshd\[11262\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.55.184.78
Jan 11 09:28:59 ns382633 sshd\[11262\]: Failed password for invalid user test10 from 45.55.184.78 port 57694 ssh2
Jan 11 09:51:05 ns382633 sshd\[15382\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.55.184.78  user=root
Jan 11 09:51:07 ns382633 sshd\[15382\]: Failed password for root from 45.55.184.78 port 34184 ssh2

Jan 11 09:53:59 v22018076622670303 sshd\[7673\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.66  user=root
Jan 11 09:54:01 v22018076622670303 sshd\[7673\]: Failed password for root from 49.88.112.66 port 31364 ssh2
Jan 11 09:54:04 v22018076622670303 sshd\[7673\]: Failed password for root from 49.88.112.66 port 31364 ssh2
...

01/11/2020-05:52:08.906991 193.106.95.9 Protocol: 6 ET SCAN Suspicious inbound to MSSQL port 1433

SSH bruteforce (Triggered fail2ban)

Jan 11 05:52:34 grey postfix/smtpd\[10131\]: NOQUEUE: reject: RCPT from unknown\[201.161.11.45\]: 554 5.7.1 Service unavailable\; Client host \[201.161.11.45\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[201.161.11.45\]\; from=\ to=\ proto=ESMTP helo=\<201-161-11-45.internetmax.maxcom.net.mx\>
...

Jan 11 10:02:18 herz-der-gamer sshd[14822]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.3.147.47  user=ts3
Jan 11 10:02:20 herz-der-gamer sshd[14822]: Failed password for ts3 from 195.3.147.47 port 1435 ssh2
...