(pop3d) Failed POP3 login from 37.49.230.161 (NL/Netherlands/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Apr 13 21:44:06 ir1 dovecot[566034]: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=, method=PLAIN, rip=37.49.230.161, lip=5.63.12.44, session=

Bible

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

2020-10-13T06:44:21.356144news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
2020-10-13T06:44:25.395781news0 dovecot[21131]: pop3-login: Aborted login (auth failed, 1 attempts in 4 secs): user=, method=PLAIN, rip=37.49.230.238, lip=95.111.246.42, session=
2020-10-13T06:44:28.401407news0 auth[956]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=admin rhost=37.49.230.238
...

Dovecot Invalid User Login Attempt.

"AmooT";tag=3533393765393339313363340132313832313335333935

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.624+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffea08d88",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="096f171f",ReceivedChallenge="096f171f",ReceivedHash="b099bdfad5869da4ae2114a56a2b4299"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.759+0200",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f0ffeab8148",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.230.126/5862",Challenge="233a417c",ReceivedChallenge="233a417c",ReceivedHash="0017581d14759d4b5ad3a404ed924131"
\[2020-10-02 15:01:13\] SECURITY\[6939\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-10-02T15:01:13.783+0200",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

[N1.H1.VM1] Port Scanner Detected Blocked by UFW

SIP Server BruteForce Attack

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

[2020-09-30 18:00:12] NOTICE[1159][C-0000421d] chan_sip.c: Call from '' (37.49.230.201:64644) to extension '12526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:12] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:12.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="12526890745",SessionID="0x7fcaa045f8f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/64644",ACLName="no_extension_match"
[2020-09-30 18:00:26] NOTICE[1159][C-0000421f] chan_sip.c: Call from '' (37.49.230.201:57391) to extension '712526890745' rejected because extension not found in context 'public'.
[2020-09-30 18:00:26] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-30T18:00:26.237-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="712526890745",SessionID="0x7fcaa04d8d08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.201/
...

Hellooo

Hellooo

Sep 28 15:49:19 : SSH login attempts with invalid user

<6 unauthorized SSH connections

2020-03-2204:48:341jFrbF-00049l-Nn\<=info@whatsup2013.chH=\(localhost\)[123.20.177.61]:56980P=esmtpsaX=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:info@whatsup2013.chS=3734id=1E1BADFEF5210FBC60652C9450E07493@whatsup2013.chT="iamChristina"forianpineda88@yahoo.cajamesrollins3211@gmail.com2020-03-2204:47:581jFraf-00047Y-BS\<=info@whatsup2013.chH=96-1-110-75-staticipwest.wireless.telus.com\(localhost\)[96.1.110.75]:41620P=esmtpsaX=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:info@whatsup2013.chS=3783id=D5D066353EEAC477ABAEE75F9BDA099D@whatsup2013.chT="iamChristina"forshit_ice_man@hotmail.co.uktwistedimage19@gmail.com2020-03-2204:49:521jFrcW-0004ED-3K\<=info@whatsup2013.chH=\(localhost\)[113.172.229.99]:42146P=esmtpsaX=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:info@whatsup2013.chS=3685id=5055E3B0BB6F41F22E2B62DA1E8FB0B0@whatsup2013.chT="iamChristina"forgerardovazquez2772@gmail.comstephenercolino@yahoo.com2020-03-2204:48:501jFrbV-0004AR-NP\<=info@whatsup2013.chH=\

2020-03-22T09:20:45.114027rocketchat.forhosting.nl sshd[10120]: Invalid user zg from 165.227.55.56 port 54448
2020-03-22T09:20:46.846370rocketchat.forhosting.nl sshd[10120]: Failed password for invalid user zg from 165.227.55.56 port 54448 ssh2
2020-03-22T09:21:50.468789rocketchat.forhosting.nl sshd[10132]: Invalid user ronjones from 165.227.55.56 port 40684
...

$f2bV_matches

Mar 22 08:13:08 cdc sshd[23779]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=151.69.170.146 
Mar 22 08:13:09 cdc sshd[23779]: Failed password for invalid user aileen from 151.69.170.146 port 47640 ssh2

2020-03-22T10:59:59.229720shield sshd\[31907\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.151  user=root
2020-03-22T11:00:01.223435shield sshd\[31907\]: Failed password for root from 222.186.175.151 port 33604 ssh2
2020-03-22T11:00:04.554487shield sshd\[31907\]: Failed password for root from 222.186.175.151 port 33604 ssh2
2020-03-22T11:00:08.300675shield sshd\[31907\]: Failed password for root from 222.186.175.151 port 33604 ssh2
2020-03-22T11:00:11.595547shield sshd\[31907\]: Failed password for root from 222.186.175.151 port 33604 ssh2

Scanning

Mar 21 02:43:29 zn008 sshd[11164]: Address 91.215.176.237 maps to ip237-pool176-bb.flynet.by, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Mar 21 02:43:29 zn008 sshd[11164]: Invalid user re from 91.215.176.237
Mar 21 02:43:29 zn008 sshd[11164]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.215.176.237 
Mar 21 02:43:32 zn008 sshd[11164]: Failed password for invalid user re from 91.215.176.237 port 30010 ssh2
Mar 21 02:43:32 zn008 sshd[11164]: Received disconnect from 91.215.176.237: 11: Bye Bye [preauth]
Mar 21 02:51:50 zn008 sshd[12324]: Address 91.215.176.237 maps to ip237-pool176-bb.flynet.by, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Mar 21 02:51:50 zn008 sshd[12324]: Invalid user za from 91.215.176.237
Mar 21 02:51:50 zn008 sshd[12324]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.215.176.237 
Mar 21 02:51:52 zn008 sshd[12........
-------------------------------

Mar 22 11:07:16 cloud sshd[2139]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=35.207.98.222 
Mar 22 11:07:18 cloud sshd[2139]: Failed password for invalid user kevin from 35.207.98.222 port 44330 ssh2

2020-03-22T12:11:23.469071ns386461 sshd\[4245\]: Invalid user zb from 111.67.194.84 port 41018
2020-03-22T12:11:23.473523ns386461 sshd\[4245\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.67.194.84
2020-03-22T12:11:25.366484ns386461 sshd\[4245\]: Failed password for invalid user zb from 111.67.194.84 port 41018 ssh2
2020-03-22T12:21:59.435453ns386461 sshd\[13618\]: Invalid user xk from 111.67.194.84 port 42302
2020-03-22T12:21:59.440089ns386461 sshd\[13618\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.67.194.84
...

Mar 22 11:34:56 silence02 sshd[5245]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=133.242.53.108
Mar 22 11:34:59 silence02 sshd[5245]: Failed password for invalid user nas from 133.242.53.108 port 33998 ssh2
Mar 22 11:38:00 silence02 sshd[5412]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=133.242.53.108

Mar 22 09:07:18 hosting180 sshd[15361]: Invalid user keli from 163.172.191.141 port 40338
...

Invalid user user from 120.92.35.5 port 36168

Mar 22 11:46:22 dcd-gentoo sshd[7893]: User root from 222.186.15.91 not allowed because none of user's groups are listed in AllowGroups
Mar 22 11:46:26 dcd-gentoo sshd[7893]: error: PAM: Authentication failure for illegal user root from 222.186.15.91
Mar 22 11:46:22 dcd-gentoo sshd[7893]: User root from 222.186.15.91 not allowed because none of user's groups are listed in AllowGroups
Mar 22 11:46:26 dcd-gentoo sshd[7893]: error: PAM: Authentication failure for illegal user root from 222.186.15.91
Mar 22 11:46:22 dcd-gentoo sshd[7893]: User root from 222.186.15.91 not allowed because none of user's groups are listed in AllowGroups
Mar 22 11:46:26 dcd-gentoo sshd[7893]: error: PAM: Authentication failure for illegal user root from 222.186.15.91
Mar 22 11:46:26 dcd-gentoo sshd[7893]: Failed keyboard-interactive/pam for invalid user root from 222.186.15.91 port 14335 ssh2
...

Brute force attempt