Jan  9 21:17:51 wbs sshd\[27057\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.23.129.3  user=root
Jan  9 21:17:52 wbs sshd\[27057\]: Failed password for root from 198.23.129.3 port 41286 ssh2
Jan  9 21:21:08 wbs sshd\[27340\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.23.129.3  user=root
Jan  9 21:21:10 wbs sshd\[27340\]: Failed password for root from 198.23.129.3 port 43974 ssh2
Jan  9 21:24:21 wbs sshd\[27627\]: Invalid user newadmin from 198.23.129.3
Jan  9 21:24:21 wbs sshd\[27627\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.23.129.3

Jan 10 04:40:05 firewall sshd[23978]: Failed password for root from 218.92.0.173 port 36112 ssh2
Jan 10 04:40:16 firewall sshd[23978]: error: maximum authentication attempts exceeded for root from 218.92.0.173 port 36112 ssh2 [preauth]
Jan 10 04:40:16 firewall sshd[23978]: Disconnecting: Too many authentication failures [preauth]
...

Jan 10 06:47:57 124388 sshd[3243]: Failed password for root from 222.186.190.17 port 47004 ssh2
Jan 10 06:47:53 124388 sshd[3243]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.190.17  user=root
Jan 10 06:47:55 124388 sshd[3243]: Failed password for root from 222.186.190.17 port 47004 ssh2
Jan 10 06:47:57 124388 sshd[3243]: Failed password for root from 222.186.190.17 port 47004 ssh2
Jan 10 06:47:59 124388 sshd[3243]: Failed password for root from 222.186.190.17 port 47004 ssh2

[Fri Jan 10 11:53:33.004230 2020] [:error] [pid 696:tid 140287733106432] [client 5.45.207.56:38707] [client 5.45.207.56] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XhgDTcjKGZdirMZ6XOjbTQAAAAc"]
...

smtp probe/invalid login attempt

Jan 10 07:55:23 host sshd[17351]: Invalid user cimeq from 95.92.116.149 port 45704
...

Unauthorized connection attempt from IP address 14.233.112.138 on Port 445(SMB)

Unauthorized connection attempt detected from IP address 157.33.110.9 to port 445

Email spam message

1578632016 - 01/10/2020 05:53:36 Host: 178.47.142.152/178.47.142.152 Port: 445 TCP Blocked

10.01.2020 08:08:16 SSH access blocked by firewall

Jan 10 08:52:31 ks10 sshd[1083514]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=77.239.254.4 
Jan 10 08:52:33 ks10 sshd[1083514]: Failed password for invalid user db2install from 77.239.254.4 port 43024 ssh2
...

Jan 10 05:53:42 grey postfix/smtpd\[370\]: NOQUEUE: reject: RCPT from spitball.saparel.com\[63.83.78.111\]: 554 5.7.1 Service unavailable\; Client host \[63.83.78.111\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[63.83.78.111\]\; from=\ to=\ proto=ESMTP helo=\
...

Jan 10 05:48:56 legacy sshd[23183]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.15.230
Jan 10 05:48:59 legacy sshd[23183]: Failed password for invalid user passpass from 106.12.15.230 port 55100 ssh2
Jan 10 05:53:27 legacy sshd[23479]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.15.230
...

20/1/10@00:15:02: FAIL: Alarm-Network address from=123.25.218.61
20/1/10@00:15:02: FAIL: Alarm-Network address from=123.25.218.61
...