Jul 30 09:30:19 hosting sshd[8868]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.178  user=root
Jul 30 09:30:21 hosting sshd[8868]: Failed password for root from 112.85.42.178 port 21133 ssh2
...

 TCP (SYN) 114.55.186.139:26672 -> port 23, len 44

Jul 30 08:01:28 ip106 sshd[26155]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.54.17.235 
Jul 30 08:01:30 ip106 sshd[26155]: Failed password for invalid user scf from 106.54.17.235 port 60418 ssh2
...

Jul 30 06:57:55 inter-technics sshd[1856]: Invalid user xjzhou from 61.247.178.170 port 36352
Jul 30 06:57:55 inter-technics sshd[1856]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.247.178.170
Jul 30 06:57:55 inter-technics sshd[1856]: Invalid user xjzhou from 61.247.178.170 port 36352
Jul 30 06:57:57 inter-technics sshd[1856]: Failed password for invalid user xjzhou from 61.247.178.170 port 36352 ssh2
Jul 30 07:02:42 inter-technics sshd[2152]: Invalid user sxh from 61.247.178.170 port 47540
...

(smtpauth) Failed SMTP AUTH login from 103.109.178.170 (IN/India/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-07-30 08:23:43 plain authenticator failed for ([103.109.178.170]) [103.109.178.170]: 535 Incorrect authentication data (set_id=info)

Jul 30 09:02:39 ift sshd\[64800\]: Invalid user taeyoung from 62.94.193.216Jul 30 09:02:41 ift sshd\[64800\]: Failed password for invalid user taeyoung from 62.94.193.216 port 41512 ssh2Jul 30 09:06:07 ift sshd\[65284\]: Invalid user timesheet from 62.94.193.216Jul 30 09:06:09 ift sshd\[65284\]: Failed password for invalid user timesheet from 62.94.193.216 port 36088 ssh2Jul 30 09:09:34 ift sshd\[449\]: Invalid user lianwei from 62.94.193.216
...

From return01@namedida.live Thu Jul 30 00:53:25 2020
Received: from namemx3.namedida.live ([45.139.221.27]:36167)

Port probing on unauthorized port 21

Lines containing failures of 173.193.79.230
Jul 30 05:49:25 dns01 sshd[14077]: Invalid user liyumeng from 173.193.79.230 port 4424
Jul 30 05:49:25 dns01 sshd[14077]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=173.193.79.230
Jul 30 05:49:27 dns01 sshd[14077]: Failed password for invalid user liyumeng from 173.193.79.230 port 4424 ssh2
Jul 30 05:49:27 dns01 sshd[14077]: Received disconnect from 173.193.79.230 port 4424:11: Bye Bye [preauth]
Jul 30 05:49:27 dns01 sshd[14077]: Disconnected from invalid user liyumeng 173.193.79.230 port 4424 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=173.193.79.230

Jul 30 07:58:44 marvibiene sshd[16469]: Failed password for root from 218.92.0.171 port 11058 ssh2
Jul 30 07:58:48 marvibiene sshd[16469]: Failed password for root from 218.92.0.171 port 11058 ssh2

20/7/29@23:53:32: FAIL: Alarm-Network address from=223.205.89.17
20/7/29@23:53:33: FAIL: Alarm-Network address from=223.205.89.17
...

Trolling for resource vulnerabilities

Jul 30 06:11:48 vps sshd[243399]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.233.134.252
Jul 30 06:11:50 vps sshd[243399]: Failed password for invalid user yangxin from 49.233.134.252 port 47356 ssh2
Jul 30 06:17:46 vps sshd[272075]: Invalid user houy from 49.233.134.252 port 53916
Jul 30 06:17:46 vps sshd[272075]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.233.134.252
Jul 30 06:17:48 vps sshd[272075]: Failed password for invalid user houy from 49.233.134.252 port 53916 ssh2
...

Auto Fail2Ban report, multiple SSH login attempts.

Jul 30 08:09:29 santamaria sshd\[20149\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.76  user=root
Jul 30 08:09:31 santamaria sshd\[20149\]: Failed password for root from 222.186.30.76 port 44187 ssh2
Jul 30 08:09:33 santamaria sshd\[20149\]: Failed password for root from 222.186.30.76 port 44187 ssh2
...