SSH Authentication Attempts Exceeded

Apr 16 06:07:21 ncomp sshd[14372]: Invalid user student05 from 123.207.142.208
Apr 16 06:07:21 ncomp sshd[14372]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.207.142.208
Apr 16 06:07:21 ncomp sshd[14372]: Invalid user student05 from 123.207.142.208
Apr 16 06:07:23 ncomp sshd[14372]: Failed password for invalid user student05 from 123.207.142.208 port 59384 ssh2

Apr 16 05:56:17 pornomens sshd\[3358\]: Invalid user zero from 106.13.93.91 port 43604
Apr 16 05:56:17 pornomens sshd\[3358\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.93.91
Apr 16 05:56:19 pornomens sshd\[3358\]: Failed password for invalid user zero from 106.13.93.91 port 43604 ssh2
...

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Apr 16 06:44:36 * sshd[10195]: Failed password for root from 222.186.175.182 port 26864 ssh2
Apr 16 06:44:52 * sshd[10195]: error: maximum authentication attempts exceeded for root from 222.186.175.182 port 26864 ssh2 [preauth]

Apr 16 05:26:06 mail.srvfarm.net postfix/smtpd[2662910]: NOQUEUE: reject: RCPT from unknown[217.112.142.92]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 16 05:29:14 mail.srvfarm.net postfix/smtpd[2643682]: NOQUEUE: reject: RCPT from unknown[217.112.142.92]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 16 05:31:33 mail.srvfarm.net postfix/smtpd[2661115]: NOQUEUE: reject: RCPT from unknown[217.112.142.92]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 16 05:32:20 mail.srvfarm.net postfix/smtpd[2662916]: NOQUEUE: reject: RCPT from unknown[217.1

2020-04-16 07:43:00 dovecot_login authenticator failed for \(User\) \[45.142.195.2\]: 535 Incorrect authentication data \(set_id=ready@org.ua\)2020-04-16 07:43:50 dovecot_login authenticator failed for \(User\) \[45.142.195.2\]: 535 Incorrect authentication data \(set_id=refunds@org.ua\)2020-04-16 07:44:40 dovecot_login authenticator failed for \(User\) \[45.142.195.2\]: 535 Incorrect authentication data \(set_id=remix@org.ua\)
...

Apr 16 06:26:43 ns381471 sshd[23850]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=210.227.113.18
Apr 16 06:26:45 ns381471 sshd[23850]: Failed password for invalid user fling from 210.227.113.18 port 59442 ssh2

Port scan: Attack repeated for 24 hours

2020-04-16T05:51:08.698480sd-86998 sshd[30000]: Invalid user flexit from 175.24.135.91 port 33696
2020-04-16T05:51:08.703905sd-86998 sshd[30000]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.24.135.91
2020-04-16T05:51:08.698480sd-86998 sshd[30000]: Invalid user flexit from 175.24.135.91 port 33696
2020-04-16T05:51:10.325708sd-86998 sshd[30000]: Failed password for invalid user flexit from 175.24.135.91 port 33696 ssh2
2020-04-16T05:56:13.730017sd-86998 sshd[30393]: Invalid user lex from 175.24.135.91 port 43420
...

Apr 16 05:51:55 minden010 sshd[28265]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.150.228
Apr 16 05:51:56 minden010 sshd[28265]: Failed password for invalid user albert from 128.199.150.228 port 59642 ssh2
Apr 16 05:55:53 minden010 sshd[29527]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.150.228
...

Apr 16 06:37:36 localhost sshd\[10673\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.255.173.70  user=root
Apr 16 06:37:38 localhost sshd\[10673\]: Failed password for root from 51.255.173.70 port 44460 ssh2
Apr 16 06:41:10 localhost sshd\[10927\]: Invalid user bkpuser from 51.255.173.70
Apr 16 06:41:10 localhost sshd\[10927\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.255.173.70
Apr 16 06:41:12 localhost sshd\[10927\]: Failed password for invalid user bkpuser from 51.255.173.70 port 51160 ssh2
...

2020-04-16T05:55:10.545001vps773228.ovh.net sshd[3932]: Invalid user postgres from 118.89.231.109 port 56515
2020-04-16T05:55:10.553308vps773228.ovh.net sshd[3932]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.89.231.109
2020-04-16T05:55:10.545001vps773228.ovh.net sshd[3932]: Invalid user postgres from 118.89.231.109 port 56515
2020-04-16T05:55:12.063600vps773228.ovh.net sshd[3932]: Failed password for invalid user postgres from 118.89.231.109 port 56515 ssh2
2020-04-16T05:56:59.532159vps773228.ovh.net sshd[4684]: Invalid user buero from 118.89.231.109 port 39877
...

Apr 16 06:30:36 web01.agentur-b-2.de postfix/smtps/smtpd[472760]: lost connection after CONNECT from unknown[78.128.113.75]
Apr 16 06:30:55 web01.agentur-b-2.de postfix/smtps/smtpd[472787]: lost connection after CONNECT from unknown[78.128.113.75]
Apr 16 06:31:00 web01.agentur-b-2.de postfix/smtps/smtpd[472760]: lost connection after CONNECT from unknown[78.128.113.75]
Apr 16 06:31:00 web01.agentur-b-2.de postfix/smtps/smtpd[472792]: lost connection after CONNECT from unknown[78.128.113.75]
Apr 16 06:31:02 web01.agentur-b-2.de postfix/smtps/smtpd[472787]: lost connection after CONNECT from unknown[78.128.113.75]

Wordpress Admin Login attack