Mar  9 05:10:57 163-172-32-151 sshd[6941]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.120.169
Mar  9 05:10:57 163-172-32-151 sshd[6941]: Invalid user pyqt from 129.204.120.169 port 38412
Mar  9 05:10:59 163-172-32-151 sshd[6941]: Failed password for invalid user pyqt from 129.204.120.169 port 38412 ssh2
...

Scan on closed tcp port 23.

firewall-block, port(s): 23/tcp

Lines containing failures of 173.88.151.178
Mar  9 21:12:20 neweola sshd[8203]: Invalid user ***c from 173.88.151.178 port 22669
Mar  9 21:12:20 neweola sshd[8203]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=173.88.151.178 
Mar  9 21:12:21 neweola sshd[8203]: Failed password for invalid user ***c from 173.88.151.178 port 22669 ssh2
Mar  9 21:12:22 neweola sshd[8203]: Received disconnect from 173.88.151.178 port 22669:11: Bye Bye [preauth]
Mar  9 21:12:22 neweola sshd[8203]: Disconnected from invalid user ***c 173.88.151.178 port 22669 [preauth]
Mar  9 21:23:51 neweola sshd[8500]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=173.88.151.178  user=backup
Mar  9 21:23:53 neweola sshd[8500]: Failed password for backup from 173.88.151.178 port 32684 ssh2
Mar  9 21:23:55 neweola sshd[8500]: Received disconnect from 173.88.151.178 port 32684:11: Bye Bye [preauth]
Mar  9 21:23:55 neweola sshd[........
------------------------------

2020-03-10T12:53:43.383483host3.slimhost.com.ua sshd[2095795]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=67.ip-167-114-2.net
2020-03-10T12:53:43.377745host3.slimhost.com.ua sshd[2095795]: Invalid user admin from 167.114.2.67 port 42424
2020-03-10T12:53:45.396405host3.slimhost.com.ua sshd[2095795]: Failed password for invalid user admin from 167.114.2.67 port 42424 ssh2
2020-03-10T12:53:46.384089host3.slimhost.com.ua sshd[2095844]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=67.ip-167-114-2.net  user=root
2020-03-10T12:53:48.138260host3.slimhost.com.ua sshd[2095844]: Failed password for root from 167.114.2.67 port 45388 ssh2
...

Mar 10 01:52:32 tdfoods sshd\[20654\]: Invalid user plex from 202.144.128.7
Mar 10 01:52:32 tdfoods sshd\[20654\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.144.128.7
Mar 10 01:52:34 tdfoods sshd\[20654\]: Failed password for invalid user plex from 202.144.128.7 port 44461 ssh2
Mar 10 01:58:21 tdfoods sshd\[21133\]: Invalid user student1 from 202.144.128.7
Mar 10 01:58:21 tdfoods sshd\[21133\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.144.128.7

2020-03-10T05:40:38.939451homeassistant sshd[28358]: Failed password for root from 222.186.15.166 port 42008 ssh2
2020-03-10T11:39:32.922031homeassistant sshd[6732]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.15.166  user=root
...

Mar 10 12:49:00 localhost sshd\[22914\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=220.133.36.112  user=root
Mar 10 12:49:01 localhost sshd\[22914\]: Failed password for root from 220.133.36.112 port 51336 ssh2
Mar 10 12:55:33 localhost sshd\[23688\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=220.133.36.112  user=root

TCP Port Scanning

2020-03-09 UTC: (30x) - 123456,R00tAdmin1,ai-tsung,artem123,co,hadoop,robi,root(18x),rootaron,test123,testnet,user2,www1

(imapd) Failed IMAP login from 178.91.44.177 (KZ/Kazakhstan/178.91.44.177.megaline.telecom.kz): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Mar 10 12:55:30 ir1 dovecot[4133960]: imap-login: Disconnected (auth failed, 1 attempts in 3 secs): user=, method=PLAIN, rip=178.91.44.177, lip=5.63.12.44, TLS: Connection closed, session=<4BBHs3ygJeqyWyyx>

Mar 10 13:01:44 santamaria sshd\[8135\]: Invalid user tom from 116.247.81.99
Mar 10 13:01:44 santamaria sshd\[8135\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=116.247.81.99
Mar 10 13:01:46 santamaria sshd\[8135\]: Failed password for invalid user tom from 116.247.81.99 port 34205 ssh2
...

TCP Port: 25      invalid blocked  spam-sorbs also justspam and s5h-net           (228)

failed_logins

Mar 10 06:59:27 vps46666688 sshd[10463]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.147.216.19
Mar 10 06:59:29 vps46666688 sshd[10463]: Failed password for invalid user qwerty from 211.147.216.19 port 43566 ssh2
...