2019-12-13 09:56:10 H=(ip-176-118-48-226.radionetwork.com.ua) [176.118.48.226]:57182 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.4, 127.0.0.3) (https://www.spamhaus.org/query/ip/176.118.48.226)
2019-12-13 09:56:10 H=(ip-176-118-48-226.radionetwork.com.ua) [176.118.48.226]:57182 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.4, 127.0.0.3) (https://www.spamhaus.org/query/ip/176.118.48.226)
2019-12-13 09:56:11 H=(ip-176-118-48-226.radionetwork.com.ua) [176.118.48.226]:57182 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.4, 127.0.0.3) (https://www.spamhaus.org/query/ip/176.118.48.226)
...

Dec 13 17:31:08 hell sshd[4482]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.150.206.88
Dec 13 17:31:10 hell sshd[4482]: Failed password for invalid user starlyn from 213.150.206.88 port 37920 ssh2
...

Dec 13 20:25:49 meumeu sshd[9169]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.142.216.102 
Dec 13 20:25:51 meumeu sshd[9169]: Failed password for invalid user krogvig from 52.142.216.102 port 44756 ssh2
Dec 13 20:32:01 meumeu sshd[9982]: Failed password for root from 52.142.216.102 port 55782 ssh2
...

--- report ---
Dec 13 15:13:21 sshd: Connection from 221.143.48.143 port 37936
Dec 13 15:13:22 sshd: Address 221.143.48.143 maps to mailfwd.mailplug.co.kr, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Dec 13 15:13:22 sshd: Invalid user nancarrow from 221.143.48.143
Dec 13 15:13:23 sshd: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.143.48.143
Dec 13 15:13:25 sshd: Failed password for invalid user nancarrow from 221.143.48.143 port 37936 ssh2
Dec 13 15:13:25 sshd: Received disconnect from 221.143.48.143: 11: Bye Bye [preauth]

12/13/2019-16:56:44.565904 85.154.18.192 Protocol: 6 ET SCAN Suspicious inbound to MSSQL port 1433

Dec 13 20:26:40 markkoudstaal sshd[26696]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.111.249.133
Dec 13 20:26:43 markkoudstaal sshd[26696]: Failed password for invalid user teste02 from 190.111.249.133 port 46806 ssh2
Dec 13 20:33:51 markkoudstaal sshd[27455]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.111.249.133

12/13/2019-20:49:54.985063 185.209.0.51 Protocol: 6 ET DROP Dshield Block Listed Source group 1

Triggered by Fail2Ban at Ares web server

Dec 13 08:53:24 home sshd[12894]: Invalid user sonhing from 69.229.6.52 port 39120
Dec 13 08:53:24 home sshd[12894]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.229.6.52
Dec 13 08:53:24 home sshd[12894]: Invalid user sonhing from 69.229.6.52 port 39120
Dec 13 08:53:26 home sshd[12894]: Failed password for invalid user sonhing from 69.229.6.52 port 39120 ssh2
Dec 13 09:02:27 home sshd[12949]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.229.6.52  user=root
Dec 13 09:02:29 home sshd[12949]: Failed password for root from 69.229.6.52 port 46048 ssh2
Dec 13 09:09:54 home sshd[12984]: Invalid user user from 69.229.6.52 port 55422
Dec 13 09:09:54 home sshd[12984]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.229.6.52
Dec 13 09:09:54 home sshd[12984]: Invalid user user from 69.229.6.52 port 55422
Dec 13 09:09:56 home sshd[12984]: Failed password for invalid user user from 69.229.6

Dec 13 20:40:31 * sshd[338]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=35.199.154.128
Dec 13 20:40:32 * sshd[338]: Failed password for invalid user named from 35.199.154.128 port 48002 ssh2

Dec 13 19:51:38 icinga sshd[18247]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.234.86.229
Dec 13 19:51:40 icinga sshd[18247]: Failed password for invalid user password123 from 49.234.86.229 port 40334 ssh2
...

Netgear DGN Device Remote Command Execution Vulnerability (40741) PA

Dec 13 20:33:03 mail sshd[6650]: Failed password for root from 218.92.0.168 port 8207 ssh2
Dec 13 20:33:09 mail sshd[6650]: Failed password for root from 218.92.0.168 port 8207 ssh2
Dec 13 20:33:12 mail sshd[6650]: Failed password for root from 218.92.0.168 port 8207 ssh2
Dec 13 20:33:16 mail sshd[6650]: Failed password for root from 218.92.0.168 port 8207 ssh2

Dec 14 00:48:00 vibhu-HP-Z238-Microtower-Workstation sshd\[23441\]: Invalid user XCyz\#xcyd from 192.241.202.169
Dec 14 00:48:00 vibhu-HP-Z238-Microtower-Workstation sshd\[23441\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.241.202.169
Dec 14 00:48:02 vibhu-HP-Z238-Microtower-Workstation sshd\[23441\]: Failed password for invalid user XCyz\#xcyd from 192.241.202.169 port 43598 ssh2
Dec 14 00:53:33 vibhu-HP-Z238-Microtower-Workstation sshd\[23742\]: Invalid user 123 from 192.241.202.169
Dec 14 00:53:33 vibhu-HP-Z238-Microtower-Workstation sshd\[23742\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.241.202.169
...

2019-12-13T19:23:11.339483shield sshd\[27329\]: Invalid user chun-she from 165.227.96.190 port 58800
2019-12-13T19:23:11.345776shield sshd\[27329\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.96.190
2019-12-13T19:23:12.653599shield sshd\[27329\]: Failed password for invalid user chun-she from 165.227.96.190 port 58800 ssh2
2019-12-13T19:28:27.159789shield sshd\[28237\]: Invalid user debian from 165.227.96.190 port 37640
2019-12-13T19:28:27.163939shield sshd\[28237\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.96.190