[Mon Jun 22 19:06:20.935786 2020] [:error] [pid 7026:tid 140048192575232] [client 69.171.251.4:60286] [client 69.171.251.4] ModSecurity: Access denied with code 403 (phase 2). Match of "eq 0" against "&REQUEST_HEADERS:Transfer-Encoding" required. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "202"] [id "920171"] [msg "GET or HEAD Request with Transfer-Encoding."] [data "1"] [severity "CRITICAL"] [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/INVALID_HREQ"] [tag "CAPEC-272"] [hostname "karangploso.jatim.bmkg.go.id"] [uri "/index.php/prakiraan-iklim/prakiraan-dasarian/prakiraan-deterministik-curah-hujan-dasarian-provinsi-jawa-timur/555558112-prakiraan-dasarian-deterministik-curah-hujan-dasarian-iii-juni-iii-juli-tahun-2020-tanggal-21-juni-31-juli-2020-di-provinsi-jawa-timur-update-20-juni-2020"] [unique_id 
...

Jun 22 21:18:48 webhost01 sshd[1066]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.25.27.67
Jun 22 21:18:50 webhost01 sshd[1066]: Failed password for invalid user phoebe from 118.25.27.67 port 37690 ssh2
...

Jun 22 15:57:32 vpn01 sshd[5320]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.91.145
Jun 22 15:57:34 vpn01 sshd[5320]: Failed password for invalid user hws from 49.235.91.145 port 49636 ssh2
...

Jun 22 15:56:26 srv-ubuntu-dev3 sshd[129569]: Invalid user tester from 52.166.130.112
Jun 22 15:56:26 srv-ubuntu-dev3 sshd[129569]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.166.130.112
Jun 22 15:56:26 srv-ubuntu-dev3 sshd[129569]: Invalid user tester from 52.166.130.112
Jun 22 15:56:28 srv-ubuntu-dev3 sshd[129569]: Failed password for invalid user tester from 52.166.130.112 port 48784 ssh2
Jun 22 16:00:23 srv-ubuntu-dev3 sshd[130203]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.166.130.112  user=sys
Jun 22 16:00:26 srv-ubuntu-dev3 sshd[130203]: Failed password for sys from 52.166.130.112 port 51344 ssh2
Jun 22 16:04:18 srv-ubuntu-dev3 sshd[130783]: Invalid user tzy from 52.166.130.112
Jun 22 16:04:18 srv-ubuntu-dev3 sshd[130783]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.166.130.112
Jun 22 16:04:18 srv-ubuntu-dev3 sshd[130783]: Invalid user t
...

Automated report (2020-06-22T20:06:24+08:00). Probe detected.

Lines containing failures of 138.99.194.19
Jun 22 13:43:43 keyhelp sshd[12049]: Invalid user admin from 138.99.194.19 port 54273
Jun 22 13:43:43 keyhelp sshd[12049]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.99.194.19
Jun 22 13:43:45 keyhelp sshd[12049]: Failed password for invalid user admin from 138.99.194.19 port 54273 ssh2
Jun 22 13:43:45 keyhelp sshd[12049]: Connection closed by invalid user admin 138.99.194.19 port 54273 [preauth]


........
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https://www.blocklist.de/en/view.html?ip=138.99.194.19

IP-8-35.dataclub.eu 185.29.8.35  spf:ticino.com:195.190.171.114 Customer Care Unit 

 TCP (SYN) 46.101.223.54:56200 -> port 11576, len 44

Jun 22 16:40:03 pve1 sshd[13324]: Failed password for root from 222.186.175.216 port 45528 ssh2
Jun 22 16:40:08 pve1 sshd[13324]: Failed password for root from 222.186.175.216 port 45528 ssh2
...

[2020-06-22 10:02:45] NOTICE[1273][C-00003b1f] chan_sip.c: Call from '' (195.154.53.237:65226) to extension '743011972592277524' rejected because extension not found in context 'public'.
[2020-06-22 10:02:45] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-22T10:02:45.187-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="743011972592277524",SessionID="0x7f31c02ff098",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/195.154.53.237/65226",ACLName="no_extension_match"
[2020-06-22 10:07:07] NOTICE[1273][C-00003b24] chan_sip.c: Call from '' (195.154.53.237:65147) to extension '987011972592277524' rejected because extension not found in context 'public'.
[2020-06-22 10:07:07] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-22T10:07:07.843-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="987011972592277524",SessionID="0x7f31c02ff098",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAdd
...

(sshd) Failed SSH login from 45.82.137.35 (IR/Iran/-): 12 in the last 3600 secs

[2020-06-22 10:08:16] NOTICE[1273] chan_sip.c: Registration from '' failed for '104.42.126.249:62692' - Wrong password
[2020-06-22 10:08:16] SECURITY[1288] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-22T10:08:16.777-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="qwerty1234",SessionID="0x7f31c02ff098",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/104.42.126.249/62692",Challenge="1da7a42e",ReceivedChallenge="1da7a42e",ReceivedHash="d411429833e27710a85d651fc7024e56"
[2020-06-22 10:10:23] NOTICE[1273] chan_sip.c: Registration from '' failed for '104.42.126.249:65365' - Wrong password
[2020-06-22 10:10:23] SECURITY[1288] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-22T10:10:23.362-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="qwerty12345",SessionID="0x7f31c04ccc48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAd
...

SSH Attack

Jun 22 15:19:15 gestao sshd[28564]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.37.213 
Jun 22 15:19:17 gestao sshd[28564]: Failed password for invalid user qyl from 106.13.37.213 port 54600 ssh2
Jun 22 15:23:15 gestao sshd[28680]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.37.213 
...

Port probing on unauthorized port 993