2020-08-10T10:11:36.874466centos sshd[2838]: Failed password for root from 192.144.234.204 port 51974 ssh2
2020-08-10T10:14:08.137274centos sshd[3304]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.144.234.204  user=root
2020-08-10T10:14:10.039561centos sshd[3304]: Failed password for root from 192.144.234.204 port 60070 ssh2
...

Bruteforce detected by fail2ban

159.89.183.168 - - [10/Aug/2020:09:33:01 +0100] "POST /wp-login.php HTTP/1.1" 200 1875 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
159.89.183.168 - - [10/Aug/2020:09:33:02 +0100] "POST /wp-login.php HTTP/1.1" 200 1860 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
159.89.183.168 - - [10/Aug/2020:09:33:03 +0100] "POST /xmlrpc.php HTTP/1.1" 403 219 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...

Fail2Ban

2020-08-10T11:36:19.569658centos sshd[16378]: Failed password for root from 222.186.180.17 port 12002 ssh2
2020-08-10T11:36:22.976043centos sshd[16378]: Failed password for root from 222.186.180.17 port 12002 ssh2
2020-08-10T11:36:26.514037centos sshd[16378]: Failed password for root from 222.186.180.17 port 12002 ssh2
...

2020-08-10T05:49:12.516437centos sshd[18757]: Failed password for root from 117.107.213.245 port 56830 ssh2
2020-08-10T05:51:10.387597centos sshd[19086]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.107.213.245  user=root
2020-08-10T05:51:12.246432centos sshd[19086]: Failed password for root from 117.107.213.245 port 35020 ssh2
...

2020-08-10T06:04:19.826070centos sshd[21365]: Failed password for root from 106.54.16.96 port 36668 ssh2
2020-08-10T06:06:48.200318centos sshd[21745]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.54.16.96  user=root
2020-08-10T06:06:50.164036centos sshd[21745]: Failed password for root from 106.54.16.96 port 44908 ssh2
...

Aug 10 11:13:49 jane sshd[20358]: Failed password for root from 61.177.172.168 port 39259 ssh2
Aug 10 11:13:53 jane sshd[20358]: Failed password for root from 61.177.172.168 port 39259 ssh2
...

(eximsyntax) Exim syntax errors from 143.137.87.116 (BR/Brazil/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-08-10 08:20:50 SMTP call from [143.137.87.116] dropped: too many syntax or protocol errors (last command was "?\034?\032?\027?\031?\034?\033?\030?\032?\026?\016?\r?\v?\f?	?")

1597031466 - 08/10/2020 05:51:06 Host: 183.82.247.78/183.82.247.78 Port: 445 TCP Blocked
...

2020-08-10T07:16:01.442583abusebot-8.cloudsearch.cf sshd[30341]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=43.225.151.142  user=root
2020-08-10T07:16:03.309954abusebot-8.cloudsearch.cf sshd[30341]: Failed password for root from 43.225.151.142 port 47937 ssh2
2020-08-10T07:21:21.809840abusebot-8.cloudsearch.cf sshd[30376]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=43.225.151.142  user=root
2020-08-10T07:21:23.606860abusebot-8.cloudsearch.cf sshd[30376]: Failed password for root from 43.225.151.142 port 50633 ssh2
2020-08-10T07:22:59.330156abusebot-8.cloudsearch.cf sshd[30389]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=43.225.151.142  user=root
2020-08-10T07:23:01.247572abusebot-8.cloudsearch.cf sshd[30389]: Failed password for root from 43.225.151.142 port 33780 ssh2
2020-08-10T07:24:42.768145abusebot-8.cloudsearch.cf sshd[30402]: pam_unix(sshd:auth):
...

 TCP (SYN) 104.211.215.114:29114 -> port 23, len 44

Aug 10 05:29:29 ws22vmsma01 sshd[168839]: Failed password for root from 202.154.184.148 port 47618 ssh2
...

1597031446 - 08/10/2020 05:50:46 Host: 1.55.251.232/1.55.251.232 Port: 445 TCP Blocked

1597031437 - 08/10/2020 05:50:37 Host: 180.242.181.217/180.242.181.217 Port: 445 TCP Blocked