Feb 25 08:24:51 server sshd\[29111\]: Invalid user speech-dispatcher from 92.222.92.128
Feb 25 08:24:51 server sshd\[29111\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.ip-92-222-92.eu 
Feb 25 08:24:53 server sshd\[29111\]: Failed password for invalid user speech-dispatcher from 92.222.92.128 port 43436 ssh2
Feb 25 08:33:08 server sshd\[30798\]: Invalid user appldev from 92.222.92.128
Feb 25 08:33:08 server sshd\[30798\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.ip-92-222-92.eu 
...

Honeypot attack, port: 445, PTR: FAST-INTERNET-103-206-255-66.solnet.net.id.

Unauthorized connection attempt detected from IP address 112.186.3.67 to port 23 [J]

Honeypot attack, port: 5555, PTR: PTR record not found

Feb 25 01:15:35 localhost sshd\[24599\]: Invalid user lixx from 145.239.78.59
Feb 25 01:15:35 localhost sshd\[24599\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=145.239.78.59
Feb 25 01:15:37 localhost sshd\[24599\]: Failed password for invalid user lixx from 145.239.78.59 port 35898 ssh2
Feb 25 01:18:56 localhost sshd\[24686\]: Invalid user doctor from 145.239.78.59
Feb 25 01:18:56 localhost sshd\[24686\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=145.239.78.59
...

2020-02-25 05:50:31 dovecot_login authenticator failed for \(User\) \[45.142.195.6\]: 535 Incorrect authentication data \(set_id=zachary@no-server.de\)
2020-02-25 05:50:34 dovecot_login authenticator failed for \(User\) \[45.142.195.6\]: 535 Incorrect authentication data \(set_id=zachary@no-server.de\)
2020-02-25 05:50:42 dovecot_login authenticator failed for \(User\) \[45.142.195.6\]: 535 Incorrect authentication data \(set_id=zachary@no-server.de\)
2020-02-25 05:50:47 dovecot_login authenticator failed for \(User\) \[45.142.195.6\]: 535 Incorrect authentication data \(set_id=zack@no-server.de\)
2020-02-25 05:51:07 dovecot_login authenticator failed for \(User\) \[45.142.195.6\]: 535 Incorrect authentication data \(set_id=zack@no-server.de\)
2020-02-25 05:51:07 dovecot_login authenticator failed for \(User\) \[45.142.195.6\]: 535 Incorrect authentication data \(set_id=zack@no-server.de\)
...

Unauthorized connection attempt detected from IP address 150.109.170.49 to port 8333 [J]

SSH brute force

Feb 25 00:30:21 plusreed sshd[7253]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=163.44.171.72  user=root
Feb 25 00:30:23 plusreed sshd[7253]: Failed password for root from 163.44.171.72 port 41824 ssh2
...

25.02.2020 05:58:26 SSH access blocked by firewall

Feb 25 06:28:30 vps647732 sshd[1708]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.249.21.132
Feb 25 06:28:32 vps647732 sshd[1708]: Failed password for invalid user musicbot from 60.249.21.132 port 56798 ssh2
...

Feb 25 00:20:11 grey postfix/smtpd\[28391\]: NOQUEUE: reject: RCPT from unknown\[114.234.216.187\]: 554 5.7.1 Service unavailable\; Client host \[114.234.216.187\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[114.234.216.187\]\; from=\ to=\ proto=ESMTP helo=\
...

firewall-block, port(s): 1433/tcp

2020-02-05T05:49:23.533881suse-nuc sshd[2454]: Invalid user roupen from 62.234.186.27 port 43948
...

2020-01-28T13:07:12.822277suse-nuc sshd[3151]: Invalid user nabhanyu from 94.177.240.4 port 33308
...