srvr3: (mod_security) mod_security (id:920350) triggered by 37.49.230.164 (NL/-/circlepole.xyz): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_MODSEC; Logs: 2020/09/26 22:39:25 [error] 324565#0: *1391 [client 37.49.230.164] 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 "160115276567.272105"] [ref "o0,14v21,14"], client: 37.49.230.164, [redacted] request: "GET / HTTP/1.1" [redacted]

srvr3: (mod_security) mod_security (id:920350) triggered by 37.49.230.164 (NL/-/circlepole.xyz): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_MODSEC; Logs: 2020/09/26 22:39:25 [error] 324565#0: *1391 [client 37.49.230.164] 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 "160115276567.272105"] [ref "o0,14v21,14"], client: 37.49.230.164, [redacted] request: "GET / HTTP/1.1" [redacted]

srvr3: (mod_security) mod_security (id:920350) triggered by 37.49.230.164 (NL/-/circlepole.xyz): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_MODSEC; Logs: 2020/09/26 22:39:25 [error] 324565#0: *1391 [client 37.49.230.164] 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 "160115276567.272105"] [ref "o0,14v21,14"], client: 37.49.230.164, [redacted] request: "GET / HTTP/1.1" [redacted]

Unauthorized connection attempt detected from IP address 37.49.230.164 to port 22

Failed password for invalid user from 37.49.230.164 port 59414 ssh2

2020-06-27T00:15:34.969437h2857900.stratoserver.net sshd[26874]: Invalid user fake from 37.49.230.164 port 40698
2020-06-27T00:15:35.205306h2857900.stratoserver.net sshd[26876]: Invalid user admin from 37.49.230.164 port 40982
...

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 16 09:48:25 debian-2gb-nbg1-2 kernel: \[138890.535478\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=92.118.37.86 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=11144 PROTO=TCP SPT=51439 DPT=35302 WINDOW=1024 RES=0x00 SYN URGP=0

1576477658 - 12/16/2019 07:27:38 Host: 114.43.75.222/114.43.75.222 Port: 445 TCP Blocked

Dec 16 08:38:50 sd-53420 sshd\[7955\]: Invalid user 1q2w3e from 134.209.178.109
Dec 16 08:38:50 sd-53420 sshd\[7955\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.178.109
Dec 16 08:38:52 sd-53420 sshd\[7955\]: Failed password for invalid user 1q2w3e from 134.209.178.109 port 54348 ssh2
Dec 16 08:43:31 sd-53420 sshd\[9775\]: Invalid user www from 134.209.178.109
Dec 16 08:43:31 sd-53420 sshd\[9775\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.178.109
...

Dec 16 09:41:50 vps647732 sshd[10437]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=87.101.72.81
Dec 16 09:41:52 vps647732 sshd[10437]: Failed password for invalid user guitar from 87.101.72.81 port 59278 ssh2
...

Unauthorized connection attempt detected from IP address 113.161.95.15 to port 445

Dec 16 09:52:31 OPSO sshd\[14098\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=191.232.189.227  user=bin
Dec 16 09:52:32 OPSO sshd\[14098\]: Failed password for bin from 191.232.189.227 port 48854 ssh2
Dec 16 09:59:58 OPSO sshd\[15712\]: Invalid user linter from 191.232.189.227 port 58866
Dec 16 09:59:58 OPSO sshd\[15712\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=191.232.189.227
Dec 16 10:00:01 OPSO sshd\[15712\]: Failed password for invalid user linter from 191.232.189.227 port 58866 ssh2

Dec 16 09:37:38 debian-2gb-nbg1-2 kernel: \[138243.860969\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=79.124.62.27 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=11526 PROTO=TCP SPT=55922 DPT=19391 WINDOW=1024 RES=0x00 SYN URGP=0

Dec 15 22:34:28 hanapaa sshd\[22218\]: Invalid user romonda from 51.38.49.140
Dec 15 22:34:28 hanapaa sshd\[22218\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.ip-51-38-49.eu
Dec 15 22:34:30 hanapaa sshd\[22218\]: Failed password for invalid user romonda from 51.38.49.140 port 58032 ssh2
Dec 15 22:39:21 hanapaa sshd\[22809\]: Invalid user pakiana from 51.38.49.140
Dec 15 22:39:21 hanapaa sshd\[22809\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.ip-51-38-49.eu

1576477687 - 12/16/2019 07:28:07 Host: 117.107.209.66/117.107.209.66 Port: 445 TCP Blocked

Dec 16 08:20:24 l02a sshd[2303]: Invalid user user from 202.93.229.229
Dec 16 08:20:24 l02a sshd[2303]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.93.229.229 
Dec 16 08:20:24 l02a sshd[2303]: Invalid user user from 202.93.229.229
Dec 16 08:20:25 l02a sshd[2303]: Failed password for invalid user user from 202.93.229.229 port 51785 ssh2

Dec 16 08:42:07 zeus sshd[5088]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.38.234.54 
Dec 16 08:42:08 zeus sshd[5088]: Failed password for invalid user kx from 51.38.234.54 port 33520 ssh2
Dec 16 08:46:52 zeus sshd[5218]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.38.234.54 
Dec 16 08:46:54 zeus sshd[5218]: Failed password for invalid user cloud from 51.38.234.54 port 39082 ssh2

Dec 16 03:47:21 linuxvps sshd\[55934\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.106.169  user=root
Dec 16 03:47:23 linuxvps sshd\[55934\]: Failed password for root from 128.199.106.169 port 36292 ssh2
Dec 16 03:53:28 linuxvps sshd\[59928\]: Invalid user goza from 128.199.106.169
Dec 16 03:53:28 linuxvps sshd\[59928\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.106.169
Dec 16 03:53:30 linuxvps sshd\[59928\]: Failed password for invalid user goza from 128.199.106.169 port 42452 ssh2

Dec 16 10:42:19 sauna sshd[172219]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=209.126.103.12
Dec 16 10:42:21 sauna sshd[172219]: Failed password for invalid user admin from 209.126.103.12 port 35084 ssh2
...

Dec 16 08:36:23 hcbbdb sshd\[3715\]: Invalid user rpc from 54.36.183.33
Dec 16 08:36:23 hcbbdb sshd\[3715\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=33.ip-54-36-183.eu
Dec 16 08:36:25 hcbbdb sshd\[3715\]: Failed password for invalid user rpc from 54.36.183.33 port 50650 ssh2
Dec 16 08:41:19 hcbbdb sshd\[4287\]: Invalid user system from 54.36.183.33
Dec 16 08:41:19 hcbbdb sshd\[4287\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=33.ip-54-36-183.eu

\[2019-12-16 03:57:46\] NOTICE\[2839\] chan_sip.c: Registration from '\' failed for '176.67.81.10:50576' - Wrong password
\[2019-12-16 03:57:46\] SECURITY\[2857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-12-16T03:57:46.297-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="97353",SessionID="0x7f0fb47c90d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/176.67.81.10/50576",Challenge="7328569e",ReceivedChallenge="7328569e",ReceivedHash="3418c9d55524f1d5555ae730d7c35d98"
\[2019-12-16 03:58:06\] NOTICE\[2839\] chan_sip.c: Registration from '\' failed for '176.67.81.10:62945' - Wrong password
\[2019-12-16 03:58:06\] SECURITY\[2857\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-12-16T03:58:06.137-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="84109",SessionID="0x7f0fb49cc118",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/176.67.8