srvr2: (mod_security) mod_security (id:920350) triggered by 106.75.118.223 (CN/-/-): 1 in the last 600 secs; Ports: *; Direction: inout; Trigger: LF_MODSEC; Logs: 2020/08/21 22:23:24 [error] 751673#0: *794349 [client 106.75.118.223] ModSecurity: Access denied with code 406 (phase 2). Matched "Operator `Rx' with parameter `^[\d.:]+$' against variable `REQUEST_HEADERS:Host'  [redacted] [file "/etc/modsecurity.d/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "718"] [id "920350"] [rev ""] [msg "Host header is a numeric IP address"] [redacted] [severity "4"] [ver "OWASP_CRS/3.3.0"] [maturity "0"] [accuracy "0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "paranoia-level/1"] [tag "OWASP_CRS"] [tag "capec/1000/210/272"] [tag "PCI/6.5.10"] [redacted] [uri "/"] [unique_id "159804140468.061763"] [ref "o0,13v21,13"], client: 106.75.118.223, [redacted] request: "GET / HTTP/1.1" [redacted]

port

SSH bruteforce

Unauthorized connection attempt detected from IP address 106.75.118.145 to port 2220 [J]

Unauthorized connection attempt detected from IP address 106.75.118.145 to port 2220 [J]

Jan  4 09:09:58 server sshd\[3870\]: Invalid user minecraft from 106.75.118.145
Jan  4 09:09:58 server sshd\[3870\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145 
Jan  4 09:10:00 server sshd\[3870\]: Failed password for invalid user minecraft from 106.75.118.145 port 56646 ssh2
Jan  4 09:24:22 server sshd\[7178\]: Invalid user duckie from 106.75.118.145
Jan  4 09:24:22 server sshd\[7178\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145 
...

Dec 23 05:54:41 gw1 sshd[21418]: Failed password for root from 106.75.118.145 port 40030 ssh2
...

Dec 19 06:47:22 localhost sshd\[5717\]: Invalid user mrooding from 106.75.118.145 port 52666
Dec 19 06:47:22 localhost sshd\[5717\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145
Dec 19 06:47:24 localhost sshd\[5717\]: Failed password for invalid user mrooding from 106.75.118.145 port 52666 ssh2

Nov 24 15:49:06 DAAP sshd[19610]: Invalid user projet_spc2004 from 106.75.118.145 port 37572
...

2019-11-23T16:55:51.067231hub.schaetter.us sshd\[22778\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145  user=root
2019-11-23T16:55:52.492915hub.schaetter.us sshd\[22778\]: Failed password for root from 106.75.118.145 port 43414 ssh2
2019-11-23T17:00:37.864989hub.schaetter.us sshd\[22805\]: Invalid user tinkle from 106.75.118.145 port 59148
2019-11-23T17:00:37.875670hub.schaetter.us sshd\[22805\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145
2019-11-23T17:00:39.898270hub.schaetter.us sshd\[22805\]: Failed password for invalid user tinkle from 106.75.118.145 port 59148 ssh2
...

Nov 19 14:00:56 vps691689 sshd[9617]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145
Nov 19 14:00:58 vps691689 sshd[9617]: Failed password for invalid user bartek from 106.75.118.145 port 44694 ssh2
...

Nov  4 23:37:41 h2177944 sshd\[28128\]: Invalid user rafael123 from 106.75.118.145 port 48122
Nov  4 23:37:41 h2177944 sshd\[28128\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145
Nov  4 23:37:43 h2177944 sshd\[28128\]: Failed password for invalid user rafael123 from 106.75.118.145 port 48122 ssh2
Nov  4 23:41:29 h2177944 sshd\[28348\]: Invalid user password from 106.75.118.145 port 56574
...

Nov  2 19:51:04 sauna sshd[182247]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145
Nov  2 19:51:07 sauna sshd[182247]: Failed password for invalid user bestbusca from 106.75.118.145 port 34014 ssh2
...

Oct 30 21:23:56 MainVPS sshd[20952]: Invalid user test from 106.75.118.145 port 43588
Oct 30 21:23:56 MainVPS sshd[20952]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145
Oct 30 21:23:56 MainVPS sshd[20952]: Invalid user test from 106.75.118.145 port 43588
Oct 30 21:23:57 MainVPS sshd[20952]: Failed password for invalid user test from 106.75.118.145 port 43588 ssh2
Oct 30 21:27:55 MainVPS sshd[21232]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145  user=root
Oct 30 21:27:57 MainVPS sshd[21232]: Failed password for root from 106.75.118.145 port 53348 ssh2
...

Oct 22 16:39:15 odroid64 sshd\[21021\]: Invalid user test from 106.75.118.145
Oct 22 16:39:15 odroid64 sshd\[21021\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.75.118.145
Oct 22 16:39:17 odroid64 sshd\[21021\]: Failed password for invalid user test from 106.75.118.145 port 35372 ssh2
...

May  2 11:35:56 webhost01 sshd[17276]: Failed password for root from 222.186.42.155 port 23786 ssh2
...

May  2 06:06:17 relay postfix/smtpd\[857\]: warning: unknown\[185.50.149.25\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:06:35 relay postfix/smtpd\[6407\]: warning: unknown\[185.50.149.25\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:07:31 relay postfix/smtpd\[1910\]: warning: unknown\[185.50.149.25\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:07:37 relay postfix/smtpd\[10281\]: warning: unknown\[185.50.149.25\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:14:46 relay postfix/smtpd\[1910\]: warning: unknown\[185.50.149.25\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

2020-05-02T05:51:38.908670sd-86998 sshd[12230]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.27.213  user=root
2020-05-02T05:51:41.092466sd-86998 sshd[12230]: Failed password for root from 106.12.27.213 port 34670 ssh2
2020-05-02T05:54:43.573006sd-86998 sshd[12466]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.27.213  user=root
2020-05-02T05:54:45.486458sd-86998 sshd[12466]: Failed password for root from 106.12.27.213 port 43322 ssh2
2020-05-02T05:57:52.251031sd-86998 sshd[12728]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.27.213  user=root
2020-05-02T05:57:54.445748sd-86998 sshd[12728]: Failed password for root from 106.12.27.213 port 51988 ssh2
...

May  2 06:42:50 eventyay sshd[8179]: Failed password for root from 222.186.180.147 port 17942 ssh2
May  2 06:43:05 eventyay sshd[8179]: error: maximum authentication attempts exceeded for root from 222.186.180.147 port 17942 ssh2 [preauth]
May  2 06:43:11 eventyay sshd[8184]: Failed password for root from 222.186.180.147 port 30026 ssh2
...

May  1 12:49:46 ntop sshd[4737]: Did not receive identification string from 169.38.96.39 port 44906
May  1 12:51:48 ntop sshd[5687]: User r.r from 169.38.96.39 not allowed because not listed in AllowUsers
May  1 12:51:48 ntop sshd[5687]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=169.38.96.39  user=r.r
May  1 12:51:50 ntop sshd[5687]: Failed password for invalid user r.r from 169.38.96.39 port 59478 ssh2
May  1 12:51:51 ntop sshd[5687]: Received disconnect from 169.38.96.39 port 59478:11: Normal Shutdown, Thank you for playing [preauth]
May  1 12:51:51 ntop sshd[5687]: Disconnected from invalid user r.r 169.38.96.39 port 59478 [preauth]
May  1 12:54:51 ntop sshd[7443]: User r.r from 169.38.96.39 not allowed because not listed in AllowUsers
May  1 12:54:51 ntop sshd[7443]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=169.38.96.39  user=r.r
May  1 12:54:53 ntop sshd[7443]: Failed passw........
-------------------------------

Port probing on unauthorized port 1433

May  2 00:28:21 NPSTNNYC01T sshd[8548]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.132.21.180
May  2 00:28:22 NPSTNNYC01T sshd[8548]: Failed password for invalid user ocadmin from 51.132.21.180 port 56908 ssh2
May  2 00:32:30 NPSTNNYC01T sshd[8836]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.132.21.180
...

$f2bV_matches

May  2 06:32:23 meumeu sshd[10464]: Failed password for root from 222.186.173.215 port 63100 ssh2
May  2 06:32:27 meumeu sshd[10464]: Failed password for root from 222.186.173.215 port 63100 ssh2
May  2 06:32:31 meumeu sshd[10464]: Failed password for root from 222.186.173.215 port 63100 ssh2
May  2 06:32:40 meumeu sshd[10464]: error: maximum authentication attempts exceeded for root from 222.186.173.215 port 63100 ssh2 [preauth]
...

May  1 18:20:16 php1 sshd\[9417\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.232.129.191  user=root
May  1 18:20:18 php1 sshd\[9417\]: Failed password for root from 49.232.129.191 port 43774 ssh2
May  1 18:21:53 php1 sshd\[9512\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.232.129.191  user=root
May  1 18:21:55 php1 sshd\[9512\]: Failed password for root from 49.232.129.191 port 60468 ssh2
May  1 18:28:14 php1 sshd\[10040\]: Invalid user ching from 49.232.129.191

May  2 05:36:19 mail.srvfarm.net postfix/smtpd[1714259]: NOQUEUE: reject: RCPT from unknown[81.28.100.167]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  2 05:36:25 mail.srvfarm.net postfix/smtpd[1729306]: NOQUEUE: reject: RCPT from unknown[81.28.100.167]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  2 05:38:09 mail.srvfarm.net postfix/smtpd[1730758]: NOQUEUE: reject: RCPT from unknown[81.28.100.167]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  2 05:40:04 mail.srvfarm.net

Invalid user bk from 140.143.183.71 port 57082

$f2bV_matches

May  2 06:11:37 relay postfix/smtpd\[10891\]: warning: unknown\[185.50.149.12\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:12:08 relay postfix/smtpd\[6407\]: warning: unknown\[185.50.149.12\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:12:27 relay postfix/smtpd\[6378\]: warning: unknown\[185.50.149.12\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:13:46 relay postfix/smtpd\[6378\]: warning: unknown\[185.50.149.12\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  2 06:14:09 relay postfix/smtpd\[6407\]: warning: unknown\[185.50.149.12\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

May  2 05:34:03 mail.srvfarm.net postfix/smtpd[1729306]: NOQUEUE: reject: RCPT from unknown[217.112.142.102]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  2 05:34:56 mail.srvfarm.net postfix/smtpd[1729306]: NOQUEUE: reject: RCPT from unknown[217.112.142.102]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  2 05:35:28 mail.srvfarm.net postfix/smtpd[1714259]: NOQUEUE: reject: RCPT from unknown[217.112.142.102]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  2 05:36:42 mail.srvfarm.net po