Oct  4 18:35:37 mail.srvfarm.net postfix/smtpd[1082720]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed: 
Oct  4 18:35:38 mail.srvfarm.net postfix/smtpd[1082720]: lost connection after AUTH from unknown[187.87.13.63]
Oct  4 18:35:55 mail.srvfarm.net postfix/smtpd[1067205]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed: 
Oct  4 18:35:56 mail.srvfarm.net postfix/smtpd[1067205]: lost connection after AUTH from unknown[187.87.13.63]
Oct  4 18:39:57 mail.srvfarm.net postfix/smtpd[1082720]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed:

Oct  3 22:21:00 mail.srvfarm.net postfix/smtpd[661689]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed: 
Oct  3 22:21:00 mail.srvfarm.net postfix/smtpd[661689]: lost connection after AUTH from unknown[187.87.13.63]
Oct  3 22:29:09 mail.srvfarm.net postfix/smtps/smtpd[659335]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed: 
Oct  3 22:29:09 mail.srvfarm.net postfix/smtps/smtpd[659335]: lost connection after AUTH from unknown[187.87.13.63]
Oct  3 22:30:11 mail.srvfarm.net postfix/smtpd[661689]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed:

Oct  3 22:21:00 mail.srvfarm.net postfix/smtpd[661689]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed: 
Oct  3 22:21:00 mail.srvfarm.net postfix/smtpd[661689]: lost connection after AUTH from unknown[187.87.13.63]
Oct  3 22:29:09 mail.srvfarm.net postfix/smtps/smtpd[659335]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed: 
Oct  3 22:29:09 mail.srvfarm.net postfix/smtps/smtpd[659335]: lost connection after AUTH from unknown[187.87.13.63]
Oct  3 22:30:11 mail.srvfarm.net postfix/smtpd[661689]: warning: unknown[187.87.13.63]: SASL PLAIN authentication failed:

(BR/Brazil/-) SMTP Bruteforcing attempts

(BR/Brazil/-) SMTP Bruteforcing attempts

Sep 23 18:50:56 mail.srvfarm.net postfix/smtps/smtpd[192843]: warning: 187-87-13-242.provedorm4net.com.br[187.87.13.242]: SASL PLAIN authentication failed: 
Sep 23 18:50:56 mail.srvfarm.net postfix/smtps/smtpd[192843]: lost connection after AUTH from 187-87-13-242.provedorm4net.com.br[187.87.13.242]
Sep 23 18:59:21 mail.srvfarm.net postfix/smtps/smtpd[198180]: warning: 187-87-13-242.provedorm4net.com.br[187.87.13.242]: SASL PLAIN authentication failed: 
Sep 23 18:59:21 mail.srvfarm.net postfix/smtps/smtpd[198180]: lost connection after AUTH from 187-87-13-242.provedorm4net.com.br[187.87.13.242]
Sep 23 19:00:30 mail.srvfarm.net postfix/smtpd[194154]: warning: unknown[187.87.13.242]: SASL PLAIN authentication failed:

Sep 17 18:17:08 mail.srvfarm.net postfix/smtps/smtpd[140754]: warning: 187-87-13-17.provedorm4net.com.br[187.87.13.17]: SASL PLAIN authentication failed: 
Sep 17 18:17:09 mail.srvfarm.net postfix/smtps/smtpd[140754]: lost connection after AUTH from 187-87-13-17.provedorm4net.com.br[187.87.13.17]
Sep 17 18:22:53 mail.srvfarm.net postfix/smtpd[143203]: warning: unknown[187.87.13.17]: SASL PLAIN authentication failed: 
Sep 17 18:22:53 mail.srvfarm.net postfix/smtpd[143203]: lost connection after AUTH from unknown[187.87.13.17]
Sep 17 18:26:32 mail.srvfarm.net postfix/smtpd[143204]: warning: unknown[187.87.13.17]: SASL PLAIN authentication failed:

Sep 17 18:17:08 mail.srvfarm.net postfix/smtps/smtpd[140754]: warning: 187-87-13-17.provedorm4net.com.br[187.87.13.17]: SASL PLAIN authentication failed: 
Sep 17 18:17:09 mail.srvfarm.net postfix/smtps/smtpd[140754]: lost connection after AUTH from 187-87-13-17.provedorm4net.com.br[187.87.13.17]
Sep 17 18:22:53 mail.srvfarm.net postfix/smtpd[143203]: warning: unknown[187.87.13.17]: SASL PLAIN authentication failed: 
Sep 17 18:22:53 mail.srvfarm.net postfix/smtpd[143203]: lost connection after AUTH from unknown[187.87.13.17]
Sep 17 18:26:32 mail.srvfarm.net postfix/smtpd[143204]: warning: unknown[187.87.13.17]: SASL PLAIN authentication failed:

Sep 17 18:17:08 mail.srvfarm.net postfix/smtps/smtpd[140754]: warning: 187-87-13-17.provedorm4net.com.br[187.87.13.17]: SASL PLAIN authentication failed: 
Sep 17 18:17:09 mail.srvfarm.net postfix/smtps/smtpd[140754]: lost connection after AUTH from 187-87-13-17.provedorm4net.com.br[187.87.13.17]
Sep 17 18:22:53 mail.srvfarm.net postfix/smtpd[143203]: warning: unknown[187.87.13.17]: SASL PLAIN authentication failed: 
Sep 17 18:22:53 mail.srvfarm.net postfix/smtpd[143203]: lost connection after AUTH from unknown[187.87.13.17]
Sep 17 18:26:32 mail.srvfarm.net postfix/smtpd[143204]: warning: unknown[187.87.13.17]: SASL PLAIN authentication failed:

Jun 22 23:21:29 vps sshd[3404]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=controller.surfixtelecom.com.br
Jun 22 23:21:31 vps sshd[3404]: Failed password for invalid user ww from 187.87.138.252 port 47720 ssh2
Jun 22 23:27:20 vps sshd[31348]: Invalid user admin from 187.87.138.252 port 47586
Jun 22 23:27:20 vps sshd[31348]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=controller.surfixtelecom.com.br
Jun 22 23:27:22 vps sshd[31348]: Failed password for invalid user admin from 187.87.138.252 port 47586 ssh2
...

DATE:2020-06-14 09:16:49, IP:187.87.138.252, PORT:ssh SSH brute force auth (docker-dc)

2020-06-13T04:09:17.047671Z ecca5da21a72 New connection: 187.87.138.252:55572 (172.17.0.3:2222) [session: ecca5da21a72]
2020-06-13T04:17:48.217929Z f1212aada29b New connection: 187.87.138.252:41236 (172.17.0.3:2222) [session: f1212aada29b]

Jun  9 06:01:20 vserver sshd\[31011\]: Invalid user monitor from 187.87.138.252Jun  9 06:01:23 vserver sshd\[31011\]: Failed password for invalid user monitor from 187.87.138.252 port 52648 ssh2Jun  9 06:05:06 vserver sshd\[31051\]: Invalid user bren123 from 187.87.138.252Jun  9 06:05:08 vserver sshd\[31051\]: Failed password for invalid user bren123 from 187.87.138.252 port 55244 ssh2
...

Invalid user admin from 187.87.138.252 port 47224

2020-04-27T14:07:57.105751vps773228.ovh.net sshd[3020]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=controller.surfixtelecom.com.br
2020-04-27T14:07:57.095782vps773228.ovh.net sshd[3020]: Invalid user testftp from 187.87.138.252 port 49726
2020-04-27T14:07:59.029056vps773228.ovh.net sshd[3020]: Failed password for invalid user testftp from 187.87.138.252 port 49726 ssh2
2020-04-27T14:12:34.725125vps773228.ovh.net sshd[3041]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=controller.surfixtelecom.com.br  user=root
2020-04-27T14:12:36.673516vps773228.ovh.net sshd[3041]: Failed password for root from 187.87.138.252 port 35184 ssh2
...

2019-12-17 02:27:37 server sshd[25454]: Failed password for invalid user server from 130.162.66.198 port 63454 ssh2

2019-12-17 08:38:55 H=(timallencpa.com) [46.36.132.68]:55904 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.3, 127.0.0.11, 127.0.0.4) (https://www.spamhaus.org/sbl/query/SBLCSS)
2019-12-17 08:38:57 H=(tomdunncpa.com) [46.36.132.68]:56416 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.3, 127.0.0.4, 127.0.0.11) (https://www.spamhaus.org/sbl/query/SBLCSS)
2019-12-17 08:38:58 H=(timallencpa.com) [46.36.132.68]:55904 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.4, 127.0.0.3, 127.0.0.11) (https://www.spamhaus.org/query/ip/46.36.132.68)
2019-12-17 08:38:58 H=(tomdunncpa.com) [46.36.132.68]:56416 I=[192.147.25.65]:25 F= rejected RCPT 

Dec 17 13:42:36 server sshd\[5948\]: Failed password for invalid user ftpuser from 189.59.110.124 port 59710 ssh2
Dec 17 19:54:22 server sshd\[13550\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.59.110.124.dynamic.adsl.gvt.net.br  user=root
Dec 17 19:54:23 server sshd\[13550\]: Failed password for root from 189.59.110.124 port 36805 ssh2
Dec 17 20:03:40 server sshd\[15945\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.59.110.124.dynamic.adsl.gvt.net.br  user=root
Dec 17 20:03:47 server sshd\[15945\]: Failed password for root from 189.59.110.124 port 42137 ssh2
...

RDP brute forcing (d)

Dangerous Phishing scapmmers

Dec 17 07:03:00 kapalua sshd\[15538\]: Invalid user koike from 110.5.46.249
Dec 17 07:03:00 kapalua sshd\[15538\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=aa046249.ppp.asahi-net.or.jp
Dec 17 07:03:02 kapalua sshd\[15538\]: Failed password for invalid user koike from 110.5.46.249 port 63579 ssh2
Dec 17 07:09:57 kapalua sshd\[16495\]: Invalid user passwd0000 from 110.5.46.249
Dec 17 07:09:57 kapalua sshd\[16495\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=aa046249.ppp.asahi-net.or.jp

Brute-force attempt banned

Lines containing failures of 76.80.1.2
Dec 17 05:16:37 supported sshd[17919]: Invalid user rin from 76.80.1.2 port 47363
Dec 17 05:16:37 supported sshd[17919]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=76.80.1.2 
Dec 17 05:16:39 supported sshd[17919]: Failed password for invalid user rin from 76.80.1.2 port 47363 ssh2
Dec 17 05:16:39 supported sshd[17919]: Received disconnect from 76.80.1.2 port 47363:11: Bye Bye [preauth]
Dec 17 05:16:39 supported sshd[17919]: Disconnected from invalid user rin 76.80.1.2 port 47363 [preauth]
Dec 17 05:33:57 supported sshd[19928]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=76.80.1.2  user=r.r
Dec 17 05:33:58 supported sshd[19928]: Failed password for r.r from 76.80.1.2 port 36023 ssh2
Dec 17 05:33:59 supported sshd[19928]: Received disconnect from 76.80.1.2 port 36023:11: Bye Bye [preauth]
Dec 17 05:33:59 supported sshd[19928]: Disconnected from au........
------------------------------

Dec 17 06:23:26 php1 sshd\[5659\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.89.180  user=root
Dec 17 06:23:28 php1 sshd\[5659\]: Failed password for root from 94.191.89.180 port 39515 ssh2
Dec 17 06:32:07 php1 sshd\[9587\]: Invalid user dv from 94.191.89.180
Dec 17 06:32:07 php1 sshd\[9587\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.89.180
Dec 17 06:32:09 php1 sshd\[9587\]: Failed password for invalid user dv from 94.191.89.180 port 33684 ssh2

Dec 17 17:31:31 nextcloud sshd\[18124\]: Invalid user passwd12345 from 185.47.187.180
Dec 17 17:31:31 nextcloud sshd\[18124\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.47.187.180
Dec 17 17:31:33 nextcloud sshd\[18124\]: Failed password for invalid user passwd12345 from 185.47.187.180 port 47762 ssh2
...

Invalid user admin from 180.76.171.53 port 45396

$f2bV_matches

Dec 17 23:47:04 webhost01 sshd[4209]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.204.91.168
Dec 17 23:47:06 webhost01 sshd[4209]: Failed password for invalid user pass123 from 175.204.91.168 port 57342 ssh2
...

Dec 17 18:21:55 vps647732 sshd[12355]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.33.210.236
Dec 17 18:21:58 vps647732 sshd[12355]: Failed password for invalid user calvin from 114.33.210.236 port 37076 ssh2
...

TCP Port Scanning