Fail2Ban Ban Triggered (2)

 TCP (SYN) 37.49.230.60:38496 -> port 22, len 44

\[2019-11-30 03:34:04\] SECURITY\[2765\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-30T03:34:04.898-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="68490048422069121",SessionID="0x7f26c4a72ee8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.60/59828",ACLName="no_extension_match"
\[2019-11-30 03:34:12\] SECURITY\[2765\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-30T03:34:12.751-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="55170048422069124",SessionID="0x7f26c4566d68",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.60/59724",ACLName="no_extension_match"
\[2019-11-30 03:34:21\] SECURITY\[2765\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-30T03:34:21.869-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="61430048422069122",SessionID="0x7f26c445f668",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.230.60/50931",ACLName="no_

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

Dec 22 11:24:19 host proftpd[17450]: 0.0.0.0 (223.150.88.171[223.150.88.171]) - USER anonymous: no such user found from 223.150.88.171 [223.150.88.171] to 62.210.151.217:21
...

Dec 22 10:52:39 microserver sshd[26043]: Invalid user admin from 134.209.50.169 port 47390
Dec 22 10:52:39 microserver sshd[26043]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.50.169
Dec 22 10:52:42 microserver sshd[26043]: Failed password for invalid user admin from 134.209.50.169 port 47390 ssh2
Dec 22 10:57:48 microserver sshd[26792]: Invalid user deploy1 from 134.209.50.169 port 51772
Dec 22 10:57:48 microserver sshd[26792]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.50.169
Dec 22 11:07:58 microserver sshd[28332]: Invalid user ikehara from 134.209.50.169 port 60530
Dec 22 11:07:58 microserver sshd[28332]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.50.169
Dec 22 11:08:00 microserver sshd[28332]: Failed password for invalid user ikehara from 134.209.50.169 port 60530 ssh2
Dec 22 11:13:05 microserver sshd[29126]: Invalid user postgres from 134.209.50.16

2019-12-22T01:21:21.638929ns547587 sshd\[2917\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.90.102.240  user=root
2019-12-22T01:21:23.292431ns547587 sshd\[2917\]: Failed password for root from 218.90.102.240 port 55238 ssh2
2019-12-22T01:21:41.925153ns547587 sshd\[3455\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.90.102.240  user=root
2019-12-22T01:21:43.323846ns547587 sshd\[3455\]: Failed password for root from 218.90.102.240 port 55732 ssh2
...

Dec 22 13:18:01 server sshd\[25715\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.246.124.36  user=root
Dec 22 13:18:03 server sshd\[25715\]: Failed password for root from 140.246.124.36 port 43606 ssh2
Dec 22 13:37:42 server sshd\[30766\]: Invalid user wolder from 140.246.124.36
Dec 22 13:37:42 server sshd\[30766\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.246.124.36 
Dec 22 13:37:45 server sshd\[30766\]: Failed password for invalid user wolder from 140.246.124.36 port 37224 ssh2
...

sshd jail - ssh hack attempt

$f2bV_matches_ltvn

Dec 22 16:16:03 server sshd\[8158\]: Invalid user bahia from 72.94.181.219
Dec 22 16:16:03 server sshd\[8158\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=static-72-94-181-219.phlapa.fios.verizon.net 
Dec 22 16:16:05 server sshd\[8158\]: Failed password for invalid user bahia from 72.94.181.219 port 9246 ssh2
Dec 22 16:22:56 server sshd\[11056\]: Invalid user ie from 72.94.181.219
Dec 22 16:22:56 server sshd\[11056\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=static-72-94-181-219.phlapa.fios.verizon.net 
...

firewall-block, port(s): 54386/tcp, 55574/tcp, 55611/tcp, 55627/tcp, 55670/tcp, 55738/tcp, 55817/tcp, 55895/tcp, 63532/tcp, 64724/tcp, 64970/tcp, 64973/tcp, 64975/tcp, 64976/tcp

abuseConfidenceScore blocked for 12h

\[Sun Dec 22 08:12:57.507165 2019\] \[access_compat:error\] \[pid 77787\] \[client 68.183.81.82:40014\] AH01797: client denied by server configuration: /usr/share/phpmyadmin/
\[Sun Dec 22 08:12:57.881849 2019\] \[access_compat:error\] \[pid 77473\] \[client 68.183.81.82:40094\] AH01797: client denied by server configuration: /usr/share/phpmyadmin/index.php
\[Sun Dec 22 08:22:05.730050 2019\] \[access_compat:error\] \[pid 78666\] \[client 68.183.81.82:45312\] AH01797: client denied by server configuration: /usr/share/phpmyadmin/
...

$f2bV_matches

Brute force SMTP login attempts.

Triggered by Fail2Ban at Vostok web server

Dec 22 15:32:45 sso sshd[9656]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.30.133.241
Dec 22 15:32:47 sso sshd[9656]: Failed password for invalid user xbmc from 112.30.133.241 port 52778 ssh2
...

$f2bV_matches