2020-10-09T08:11:25.344757shield sshd\[16648\]: Invalid user Jessa from 128.199.76.76 port 2242
2020-10-09T08:11:25.354291shield sshd\[16648\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.76.76
2020-10-09T08:11:27.459332shield sshd\[16648\]: Failed password for invalid user Jessa from 128.199.76.76 port 2242 ssh2
2020-10-09T08:15:05.537047shield sshd\[16961\]: Invalid user Elgie from 128.199.76.76 port 43356
2020-10-09T08:15:05.545200shield sshd\[16961\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.76.76

(sshd) Failed SSH login from 191.25.103.85 (BR/Brazil/191-25-103-85.user.vivozap.com.br): 3 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Oct  8 16:44:39 internal2 sshd[2486]: Invalid user ubnt from 191.25.103.85 port 56063
Oct  8 16:45:33 internal2 sshd[2968]: Invalid user admin from 191.25.103.85 port 56090
Oct  8 16:45:35 internal2 sshd[2974]: Invalid user admin from 191.25.103.85 port 56091

" "

(sshd) Failed SSH login from 188.131.142.176 (CN/China/Beijing/Haidian (Haidian Qu)/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Oct  9 16:38:46 atlas sshd[1314]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.131.142.176  user=root
Oct  9 16:38:48 atlas sshd[1314]: Failed password for root from 188.131.142.176 port 57322 ssh2
Oct  9 16:39:37 atlas sshd[1603]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.131.142.176  user=root
Oct  9 16:39:40 atlas sshd[1603]: Failed password for root from 188.131.142.176 port 35698 ssh2
Oct  9 16:40:11 atlas sshd[1810]: Invalid user public from 188.131.142.176 port 41336

WordPress brute force

2020-10-10 02:08:19 auth_plain authenticator failed for (User) [94.102.56.238]: 535 Incorrect authentication data (set_id=test@lavrinenko.info,)
2020-10-10 02:08:19 SMTP call from (User) [94.102.56.238] dropped: too many nonmail commands (last was "RSET")
...

Web scan/attack: detected 1 distinct attempts within a 12-hour window (GPON (CVE-2018-10561))

2020-10-10T03:09:16.915858abusebot-3.cloudsearch.cf sshd[29735]: Invalid user adam from 91.64.205.239 port 59690
2020-10-10T03:09:16.921342abusebot-3.cloudsearch.cf sshd[29735]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip5b40cdef.dynamic.kabel-deutschland.de
2020-10-10T03:09:16.915858abusebot-3.cloudsearch.cf sshd[29735]: Invalid user adam from 91.64.205.239 port 59690
2020-10-10T03:09:19.115918abusebot-3.cloudsearch.cf sshd[29735]: Failed password for invalid user adam from 91.64.205.239 port 59690 ssh2
2020-10-10T03:15:36.357158abusebot-3.cloudsearch.cf sshd[29852]: Invalid user proba from 91.64.205.239 port 33954
2020-10-10T03:15:36.361207abusebot-3.cloudsearch.cf sshd[29852]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip5b40cdef.dynamic.kabel-deutschland.de
2020-10-10T03:15:36.357158abusebot-3.cloudsearch.cf sshd[29852]: Invalid user proba from 91.64.205.239 port 33954
2020-10-10T03:15:38.39
...

Oct  9 21:19:41 mail sshd[28124]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=95.78.251.116 
Oct  9 21:19:43 mail sshd[28124]: Failed password for invalid user pass from 95.78.251.116 port 42186 ssh2
...

SSH Brute-Force reported by Fail2Ban

Oct 10 03:01:47 piServer sshd[4285]: Failed password for root from 51.83.139.56 port 38301 ssh2
Oct 10 03:01:50 piServer sshd[4285]: Failed password for root from 51.83.139.56 port 38301 ssh2
Oct 10 03:01:54 piServer sshd[4285]: Failed password for root from 51.83.139.56 port 38301 ssh2
Oct 10 03:01:58 piServer sshd[4285]: Failed password for root from 51.83.139.56 port 38301 ssh2
...

$f2bV_matches

SSH Brute Force

SSH login attempts.

 TCP (SYN) 45.148.122.173:55294 -> port 22, len 44