Dec  5 22:43:37 ns41 sshd[8591]: Failed password for root from 83.52.139.230 port 54264 ssh2
Dec  5 22:43:37 ns41 sshd[8591]: Failed password for root from 83.52.139.230 port 54264 ssh2

Dec  5 22:03:34 grey postfix/smtpd\[12163\]: NOQUEUE: reject: RCPT from weigh.swingthelamp.com\[69.94.158.94\]: 554 5.7.1 Service unavailable\; Client host \[69.94.158.94\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[69.94.158.94\]\; from=\ to=\ proto=ESMTP helo=\
...

firewall-block, port(s): 6380/tcp

Dec  5 23:06:39 grey postfix/smtpd\[30311\]: NOQUEUE: reject: RCPT from mail1.powermta.tk\[167.71.141.32\]: 554 5.7.1 Service unavailable\; Client host \[167.71.141.32\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[167.71.141.32\]\; from=\ to=\ proto=ESMTP helo=\
...

Dec  5 22:40:32 legacy sshd[5229]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.78.240.10
Dec  5 22:40:34 legacy sshd[5229]: Failed password for invalid user hisae from 101.78.240.10 port 59114 ssh2
Dec  5 22:47:53 legacy sshd[5516]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.78.240.10
...

Dec  5 22:03:23 pornomens sshd\[20004\]: Invalid user changeme from 89.212.77.12 port 41330
Dec  5 22:03:23 pornomens sshd\[20004\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.212.77.12
Dec  5 22:03:26 pornomens sshd\[20004\]: Failed password for invalid user changeme from 89.212.77.12 port 41330 ssh2
...

Dec  5 22:37:27 markkoudstaal sshd[9623]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.162.108
Dec  5 22:37:29 markkoudstaal sshd[9623]: Failed password for invalid user x from 128.199.162.108 port 40538 ssh2
Dec  5 22:43:54 markkoudstaal sshd[10425]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.162.108

Dec  6 03:29:35 areeb-Workstation sshd[18368]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=176.115.100.201 
Dec  6 03:29:37 areeb-Workstation sshd[18368]: Failed password for invalid user dejade from 176.115.100.201 port 35454 ssh2
...

2019-12-05T21:58:33.620623abusebot-6.cloudsearch.cf sshd\[31491\]: Invalid user ib from 51.254.37.192 port 49490

$f2bV_matches

2019-12-05T22:53:24.290488vps751288.ovh.net sshd\[13535\]: Invalid user radio from 94.191.50.57 port 41414
2019-12-05T22:53:24.299579vps751288.ovh.net sshd\[13535\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.50.57
2019-12-05T22:53:26.549039vps751288.ovh.net sshd\[13535\]: Failed password for invalid user radio from 94.191.50.57 port 41414 ssh2
2019-12-05T23:01:06.569177vps751288.ovh.net sshd\[13619\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.50.57  user=root
2019-12-05T23:01:08.909060vps751288.ovh.net sshd\[13619\]: Failed password for root from 94.191.50.57 port 51292 ssh2

Dec  6 07:23:05 our-server-hostname postfix/smtpd[10710]: connect from unknown[46.36.153.248]
Dec x@x
Dec x@x
Dec x@x
Dec x@x
Dec x@x
Dec x@x
Dec x@x
Dec x@x
Dec x@x
Dec x@x


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=46.36.153.248

Dec  5 17:15:44 TORMINT sshd\[20536\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.180  user=root
Dec  5 17:15:46 TORMINT sshd\[20536\]: Failed password for root from 222.186.173.180 port 60372 ssh2
Dec  5 17:15:49 TORMINT sshd\[20536\]: Failed password for root from 222.186.173.180 port 60372 ssh2
...

k+ssh-bruteforce

Telnet/23 MH Probe, BF, Hack -