[Mon Mar 23 12:37:29.103889 2020] [:error] [pid 11438:tid 140082381903616] [client 141.8.183.63:43135] [client 141.8.183.63] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XnhLGaN5UnZzmNRGTSXzBQAAAhw"]
...

[Wed Mar 18 01:19:02.093774 2020] [:error] [pid 3390:tid 140291809994496] [client 141.8.183.63:61033] [client 141.8.183.63] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XnEUltmai5v8-DxfrxthxAAAAUw"]
...

[Fri Mar 06 14:23:56.304877 2020] [:error] [pid 16916:tid 140037601617664] [client 141.8.183.63:44237] [client 141.8.183.63] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XmH6jJNz2TgPD0DjwKXs9QAAAUs"]
...

[Thu Apr 02 19:44:22.728381 2020] [:error] [pid 5800:tid 140149912323840] [client 141.8.183.90:55215] [client 141.8.183.90] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XoXeJpA21zJ4xSE@kVtqMQAAAC0"]
...

[Thu Apr 02 04:14:51.054478 2020] [:error] [pid 28682:tid 139905002895104] [client 141.8.183.105:58577] [client 141.8.183.105] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XoUESzjurpzq@vKpKHoD6QAAAng"]
...

[Mon Mar 30 04:32:23.081654 2020] [:error] [pid 3445:tid 140228534728448] [client 141.8.183.105:65031] [client 141.8.183.105] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XoET54VMKAKBsm84E51syQAAAWg"]
...

[Mon Mar 30 04:32:40.721011 2020] [:error] [pid 3443:tid 140228517943040] [client 141.8.183.107:47579] [client 141.8.183.107] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XoET@KbajUV@spDZmiyI9wAAARA"]
...

[Tue Mar 24 10:59:25.158642 2020] [:error] [pid 1202:tid 139752675202816] [client 141.8.183.105:63711] [client 141.8.183.105] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XnmFndrAlgUVOjKqiZRlsgAAAcQ"]
...

[Mon Mar 23 22:42:53.617600 2020] [:error] [pid 25293:tid 140519768332032] [client 141.8.183.102:51411] [client 141.8.183.102] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XnjY-bdSec56q6n39A6CCwAAAqM"]
...

[Mon Mar 23 22:45:10.601907 2020] [:error] [pid 25293:tid 140519768332032] [client 141.8.183.90:39169] [client 141.8.183.90] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XnjZhrdSec56q6n39A6CPwAAAqM"]
...

[Fri Mar 20 04:54:23.144502 2020] [:error] [pid 26247:tid 140596796794624] [client 141.8.183.102:52393] [client 141.8.183.102] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "XnPqDwDHKyRZYePqYJvIXgAAAC4"]
...

[Sat Jan 25 08:02:17.923031 2020] [access_compat:error] [pid 12503] [client 141.8.183.213:42955] AH01797: client denied by server configuration: /home/webtools/euweb/www/ngbc/robots.txt
[Sat Jan 25 08:02:21.603096 2020] [access_compat:error] [pid 12503] [client 141.8.183.213:42955] AH01797: client denied by server configuration: /home/webtools/euweb/www/ngbc/forums
[Sat Jan 25 18:10:51.821022 2020] [access_compat:error] [pid 26221] [client 141.8.183.213:52093] AH01797: client denied by server configuration: /home/webtools/euweb/www/ngbc/robots.txt
[Sat Jan 25 18:10:55.482620 2020] [access_compat:error] [pid 26221] [client 141.8.183.213:52093] AH01797: client denied by server configuration: /home/webtools/euweb/www/ngbc/forums
[Sat Jan 25 22:12:03.128085 2020] [access_compat:error] [pid 28855] [client 141.8.183.213:43189] AH01797: client denied by server configuration: /home/webtools/euweb/www/ngbc/robots.txt

Dec  8 09:35:50 cvbnet sshd[22935]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.254.0.182 
Dec  8 09:35:51 cvbnet sshd[22935]: Failed password for invalid user osix. from 188.254.0.182 port 35820 ssh2
...

Dec  8 08:53:55 SilenceServices sshd[11447]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.37.35
Dec  8 08:53:58 SilenceServices sshd[11447]: Failed password for invalid user asterisk from 182.61.37.35 port 42847 ssh2
Dec  8 09:00:43 SilenceServices sshd[13502]: Failed password for mail from 182.61.37.35 port 44545 ssh2

SSH invalid-user multiple login attempts

Too many connections or unauthorized access detected from Arctic banned ip

Dec  8 09:33:15 loxhost sshd\[7878\]: Invalid user test from 106.12.179.165 port 56754
Dec  8 09:33:15 loxhost sshd\[7878\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.179.165
Dec  8 09:33:17 loxhost sshd\[7878\]: Failed password for invalid user test from 106.12.179.165 port 56754 ssh2
Dec  8 09:40:50 loxhost sshd\[8166\]: Invalid user backups from 106.12.179.165 port 34008
Dec  8 09:40:50 loxhost sshd\[8166\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.179.165
...

Dec  8 09:52:46 server sshd\[22146\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=194.143.231.202  user=root
Dec  8 09:52:48 server sshd\[22146\]: Failed password for root from 194.143.231.202 port 55112 ssh2
Dec  8 10:03:32 server sshd\[25004\]: Invalid user admin from 194.143.231.202
Dec  8 10:03:32 server sshd\[25004\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=194.143.231.202 
Dec  8 10:03:35 server sshd\[25004\]: Failed password for invalid user admin from 194.143.231.202 port 37593 ssh2
...

Fail2Ban - SSH Bruteforce Attempt

Dec  8 10:17:58 MK-Soft-VM3 sshd[13269]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.94.204.156 
Dec  8 10:17:59 MK-Soft-VM3 sshd[13269]: Failed password for invalid user rh from 115.94.204.156 port 35526 ssh2
...

Dec  8 08:53:27 relay postfix/smtpd\[17890\]: NOQUEUE: reject: RCPT from unknown\[181.41.216.137\]: 554 5.7.1 \: Relay access denied\; from=\<5wydtaro97vz6vu6@sw-kuban.ru\> to=\ proto=ESMTP helo=\<\[181.41.216.131\]\>
Dec  8 08:53:27 relay postfix/smtpd\[17890\]: NOQUEUE: reject: RCPT from unknown\[181.41.216.137\]: 554 5.7.1 \: Relay access denied\; from=\<5wydtaro97vz6vu6@sw-kuban.ru\> to=\ proto=ESMTP helo=\<\[181.41.216.131\]\>
Dec  8 08:53:27 relay postfix/smtpd\[17890\]: NOQUEUE: reject: RCPT from unknown\[181.41.216.137\]: 554 5.7.1 \: Relay access denied\; from=\<5wydtaro97vz6vu6@sw-kuban.ru\> to=\ proto=ESMTP helo=\<\[181.41.216.131\]\>
Dec  8 08:53:27 relay postfix/smtpd\[17890\]: NOQUEUE: reject: RCPT from unknown\[181.41.216.137\]: 554 5.7.1 \: Relay access denied\; from=\<5wydtaro97vz6vu6@sw-kuban.ru\> to=
...

<6 unauthorized SSH connections

UTC: 2019-12-07 port: 23/tcp

Fail2Ban - SSH Bruteforce Attempt

Too many connections or unauthorized access detected from Arctic banned ip

Dec  8 08:42:46 thevastnessof sshd[27216]: Failed password for root from 218.92.0.180 port 48603 ssh2
...

2019-12-08T07:36:44.696915abusebot-4.cloudsearch.cf sshd\[10528\]: Invalid user pasword888 from 187.115.76.161 port 56418