Jul 18 07:36:52 ubuntu-2gb-nbg1-dc3-1 sshd[14382]: Failed password for root from 222.124.146.18 port 35835 ssh2
Jul 18 07:42:34 ubuntu-2gb-nbg1-dc3-1 sshd[14739]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.124.146.18
...

port scan and connect, tcp 6379 (redis)

Honeypot attack, port: 445, PTR: PTR record not found

Jul 18 06:08:05 mail postfix/smtpd\[19319\]: warning: unknown\[193.169.252.18\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Jul 18 06:33:07 mail postfix/smtpd\[20367\]: warning: unknown\[193.169.252.18\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Jul 18 07:23:23 mail postfix/smtpd\[22105\]: warning: unknown\[193.169.252.18\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Jul 18 07:48:34 mail postfix/smtpd\[23729\]: warning: unknown\[193.169.252.18\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\

Jul 18 07:31:50 ubuntu-2gb-nbg1-dc3-1 sshd[14048]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=23.94.16.72
Jul 18 07:31:52 ubuntu-2gb-nbg1-dc3-1 sshd[14048]: Failed password for invalid user pbsdata from 23.94.16.72 port 60150 ssh2
...

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Jul 18 03:20:17 ubuntu-2gb-nbg1-dc3-1 sshd[28112]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=197.214.68.47
Jul 18 03:20:19 ubuntu-2gb-nbg1-dc3-1 sshd[28112]: Failed password for invalid user mailtest from 197.214.68.47 port 48152 ssh2
...

Jul 18 05:49:44 animalibera sshd[4180]: Invalid user lolo from 164.132.38.167 port 33620
...

2019-07-18T05:52:42.605876abusebot-2.cloudsearch.cf sshd\[6660\]: Invalid user marius from 121.141.5.199 port 42530

Helo

Honeypot attack, port: 23, PTR: PTR record not found

Automatic report - Port Scan Attack

Jul 18 03:20:19 server postfix/smtpd[19367]: NOQUEUE: reject: RCPT from fixed-187-189-212-247.totalplay.net[187.189.212.247]: 554 5.7.1 Service unavailable; Client host [187.189.212.247] blocked using zen.spamhaus.org; https://www.spamhaus.org/query/ip/187.189.212.247; from= to= proto=ESMTP helo=

Rude login attack (38 tries in 1d)

firewall-block, port(s): 2519/tcp