[2020-07-25 19:51:19] NOTICE[1248][C-00000429] chan_sip.c: Call from '' (156.96.155.3:49928) to extension '00441235619357' rejected because extension not found in context 'public'.
[2020-07-25 19:51:19] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-25T19:51:19.125-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441235619357",SessionID="0x7f272004f2e8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.155.3/49928",ACLName="no_extension_match"
[2020-07-25 19:54:36] NOTICE[1248][C-00000430] chan_sip.c: Call from '' (156.96.155.3:54814) to extension '00441235619357' rejected because extension not found in context 'public'.
[2020-07-25 19:54:36] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-25T19:54:36.509-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441235619357",SessionID="0x7f27200369e8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.
...

[2020-07-25 16:02:02] NOTICE[1248][C-00000280] chan_sip.c: Call from '' (156.96.155.3:65232) to extension '00441235619357' rejected because extension not found in context 'public'.
[2020-07-25 16:02:02] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-25T16:02:02.713-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441235619357",SessionID="0x7f27200369e8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.155.3/65232",ACLName="no_extension_match"
[2020-07-25 16:05:32] NOTICE[1248][C-00000289] chan_sip.c: Call from '' (156.96.155.3:63543) to extension '00441235619357' rejected because extension not found in context 'public'.
[2020-07-25 16:05:32] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-25T16:05:32.883-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441235619357",SessionID="0x7f2720090aa8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.
...

[2020-07-25 05:00:32] NOTICE[1277][C-00003103] chan_sip.c: Call from '' (156.96.155.3:59556) to extension '00441235619357' rejected because extension not found in context 'public'.
[2020-07-25 05:00:32] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-25T05:00:32.709-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441235619357",SessionID="0x7f17545b1d48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.155.3/59556",ACLName="no_extension_match"
[2020-07-25 05:03:44] NOTICE[1277][C-00003107] chan_sip.c: Call from '' (156.96.155.3:60414) to extension '00441235619357' rejected because extension not found in context 'public'.
[2020-07-25 05:03:44] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-25T05:03:44.460-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441235619357",SessionID="0x7f1754742008",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.
...

[2020-07-09 11:20:26] NOTICE[1150][C-00001217] chan_sip.c: Call from '' (156.96.155.3:60729) to extension '01146313113292' rejected because extension not found in context 'public'.
[2020-07-09 11:20:26] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-09T11:20:26.145-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="01146313113292",SessionID="0x7fcb4c07a778",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.155.3/60729",ACLName="no_extension_match"
[2020-07-09 11:23:24] NOTICE[1150][C-0000121b] chan_sip.c: Call from '' (156.96.155.3:49729) to extension '901146313113292' rejected because extension not found in context 'public'.
[2020-07-09 11:23:24] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-09T11:23:24.602-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="901146313113292",SessionID="0x7fcb4c03b8a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.9
...

[2020-07-09 07:07:34] NOTICE[1150][C-00001090] chan_sip.c: Call from '' (156.96.155.3:59092) to extension '990046313113292' rejected because extension not found in context 'public'.
[2020-07-09 07:07:34] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-09T07:07:34.825-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="990046313113292",SessionID="0x7fcb4c0dfe08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156.96.155.3/59092",ACLName="no_extension_match"
[2020-07-09 07:10:21] NOTICE[1150][C-00001094] chan_sip.c: Call from '' (156.96.155.3:57186) to extension '000046313113292' rejected because extension not found in context 'public'.
[2020-07-09 07:10:21] SECURITY[1167] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-09T07:10:21.351-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000046313113292",SessionID="0x7fcb4c07a778",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/156
...

General vulnerability scan.

Fraudulent SIP

156.96.155.243 - - [22/Jun/2020:14:03:37 +0200] "GET /phpmyadmin/ HTTP/1.1" 301 162 "http://77.73.69.240/" "Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1"
156.96.155.243 - - [22/Jun/2020:14:03:57 +0200] "GET /PMA/ HTTP/1.1" 301 162 "http://77.73.69.240/" "Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1"
...

 TCP (SYN) 156.96.155.230:54807 -> port 11211, len 44

ET DROP Spamhaus DROP Listed Traffic Inbound group 12 - port: 123 proto: UDP cat: Misc Attack

Port Scan detected!
...

Honeypot hit.

2020-04-30T22:52:20.879718+02:00 lumpi kernel: [13569678.341696] INPUT:DROP:SPAMHAUS_DROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=156.96.155.246 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=242 ID=54321 PROTO=TCP SPT=49301 DPT=389 WINDOW=65535 RES=0x00 SYN URGP=0 
...

2020-04-30T23:05:25.704667+02:00 lumpi kernel: [13570463.154698] INPUT:DROP:SPAMHAUS_DROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=156.96.155.61 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=241 ID=9474 PROTO=TCP SPT=55505 DPT=5038 WINDOW=1024 RES=0x00 SYN URGP=0 
...

detected by Fail2Ban

Apr 27 17:29:26 haigwepa sshd[4335]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=156.96.155.248 
Apr 27 17:29:28 haigwepa sshd[4335]: Failed password for invalid user admin from 156.96.155.248 port 2495 ssh2
...

2020-04-18T22:28:13.186228+02:00 lumpi kernel: [12531446.418281] INPUT:DROP:SPAMHAUS_DROP:IN=eth0 OUT= MAC=52:54:a2:01:a5:04:d2:74:7f:6e:37:e3:08:00 SRC=156.96.155.246 DST=78.46.199.189 LEN=40 TOS=0x00 PREC=0x00 TTL=242 ID=54321 PROTO=TCP SPT=41760 DPT=389 WINDOW=65535 RES=0x00 SYN URGP=0 
...

[portscan] udp/1900 [ssdp]
*(RWIN=-)(04161050)

Port Scanning Detected

ET DROP Spamhaus DROP Listed Traffic Inbound group 13 - port: 123 proto: UDP cat: Misc Attack

Nov 11 01:49:17 itv-usvr-01 sshd[15181]: Invalid user web from 181.30.27.11
Nov 11 01:49:17 itv-usvr-01 sshd[15181]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=181.30.27.11
Nov 11 01:49:17 itv-usvr-01 sshd[15181]: Invalid user web from 181.30.27.11
Nov 11 01:49:19 itv-usvr-01 sshd[15181]: Failed password for invalid user web from 181.30.27.11 port 47039 ssh2

Nov 16 06:07:28 MK-Soft-Root2 sshd[28865]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=43.224.227.236 
Nov 16 06:07:30 MK-Soft-Root2 sshd[28865]: Failed password for invalid user lieselotte from 43.224.227.236 port 42115 ssh2
...

Nov 15 00:37:15 pl3server sshd[32133]: Invalid user yoo from 204.48.17.136
Nov 15 00:37:17 pl3server sshd[32133]: Failed password for invalid user yoo from 204.48.17.136 port 52770 ssh2
Nov 15 00:37:17 pl3server sshd[32133]: Received disconnect from 204.48.17.136: 11: Bye Bye [preauth]
Nov 15 00:46:05 pl3server sshd[5837]: Invalid user edvard from 204.48.17.136


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=204.48.17.136

Lines containing failures of 183.62.139.167
Nov 14 12:11:31 nxxxxxxx sshd[7334]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.62.139.167  user=r.r
Nov 14 12:11:33 nxxxxxxx sshd[7334]: Failed password for r.r from 183.62.139.167 port 34384 ssh2
Nov 14 12:11:33 nxxxxxxx sshd[7334]: Received disconnect from 183.62.139.167 port 34384:11: Bye Bye [preauth]
Nov 14 12:11:33 nxxxxxxx sshd[7334]: Disconnected from authenticating user r.r 183.62.139.167 port 34384 [preauth]
Nov 14 12:35:59 nxxxxxxx sshd[10379]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.62.139.167  user=r.r
Nov 14 12:36:01 nxxxxxxx sshd[10379]: Failed password for r.r from 183.62.139.167 port 41656 ssh2
Nov 14 12:36:01 nxxxxxxx sshd[10379]: Received disconnect from 183.62.139.167 port 41656:11: Bye Bye [preauth]
Nov 14 12:36:01 nxxxxxxx sshd[10379]: Disconnected from authenticating user r.r 183.62.139.167 port 41656 [pr........
------------------------------

Port scan: Attack repeated for 24 hours

Nov 11 17:11:06 itv-usvr-01 sshd[21804]: Invalid user schedule from 185.74.4.189
Nov 11 17:11:06 itv-usvr-01 sshd[21804]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.74.4.189
Nov 11 17:11:06 itv-usvr-01 sshd[21804]: Invalid user schedule from 185.74.4.189
Nov 11 17:11:08 itv-usvr-01 sshd[21804]: Failed password for invalid user schedule from 185.74.4.189 port 42004 ssh2
Nov 11 17:15:08 itv-usvr-01 sshd[21964]: Invalid user ftp from 185.74.4.189

Nov 14 16:52:26 itv-usvr-01 sshd[10932]: Invalid user orstadvik from 183.82.123.102
Nov 14 16:52:26 itv-usvr-01 sshd[10932]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.82.123.102
Nov 14 16:52:26 itv-usvr-01 sshd[10932]: Invalid user orstadvik from 183.82.123.102
Nov 14 16:52:28 itv-usvr-01 sshd[10932]: Failed password for invalid user orstadvik from 183.82.123.102 port 44238 ssh2
Nov 14 16:56:24 itv-usvr-01 sshd[11059]: Invalid user bread from 183.82.123.102

Nov 16 02:25:18 vtv3 sshd\[737\]: Invalid user lclin from 5.196.29.194 port 36021
Nov 16 02:25:18 vtv3 sshd\[737\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.196.29.194
Nov 16 02:25:20 vtv3 sshd\[737\]: Failed password for invalid user lclin from 5.196.29.194 port 36021 ssh2
Nov 16 02:29:55 vtv3 sshd\[2016\]: Invalid user jx from 5.196.29.194 port 45079
Nov 16 02:29:55 vtv3 sshd\[2016\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.196.29.194
Nov 16 02:43:04 vtv3 sshd\[6834\]: Invalid user di from 5.196.29.194 port 43007
Nov 16 02:43:04 vtv3 sshd\[6834\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.196.29.194
Nov 16 02:43:05 vtv3 sshd\[6834\]: Failed password for invalid user di from 5.196.29.194 port 43007 ssh2
Nov 16 02:47:20 vtv3 sshd\[8364\]: Invalid user yoyo from 5.196.29.194 port 50402
Nov 16 02:47:20 vtv3 sshd\[8364\]: pam_unix\(sshd:auth\): authentication

2019-11-16 H=170-247-43-142.westlink.net.br \[170.247.43.142\] sender verify fail for \: Unrouteable address
2019-11-16 H=170-247-43-142.westlink.net.br \[170.247.43.142\] F=\ rejected RCPT \: Sender verify failed
2019-11-16 H=170-247-43-142.westlink.net.br \[170.247.43.142\] F=\ rejected RCPT \: Sender verify failed

Nov 16 05:52:57 SilenceServices sshd[12342]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.233.163
Nov 16 05:52:59 SilenceServices sshd[12342]: Failed password for invalid user home from 54.37.233.163 port 42868 ssh2
Nov 16 05:56:42 SilenceServices sshd[13614]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.233.163

Nov 15 18:50:43 web1 sshd\[15631\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.157.129.158  user=bin
Nov 15 18:50:44 web1 sshd\[15631\]: Failed password for bin from 42.157.129.158 port 45574 ssh2
Nov 15 18:56:25 web1 sshd\[16099\]: Invalid user students from 42.157.129.158
Nov 15 18:56:25 web1 sshd\[16099\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.157.129.158
Nov 15 18:56:26 web1 sshd\[16099\]: Failed password for invalid user students from 42.157.129.158 port 54118 ssh2

Too many connections or unauthorized access detected from Arctic banned ip

Nov 16 05:56:35 cvbnet sshd[11254]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.114.174.124 
Nov 16 05:56:37 cvbnet sshd[11254]: Failed password for invalid user admin from 37.114.174.124 port 47197 ssh2
...

Nov 14 22:05:00 itv-usvr-01 sshd[23353]: Invalid user nidzieko from 181.48.58.162
Nov 14 22:05:00 itv-usvr-01 sshd[23353]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=181.48.58.162
Nov 14 22:05:00 itv-usvr-01 sshd[23353]: Invalid user nidzieko from 181.48.58.162
Nov 14 22:05:02 itv-usvr-01 sshd[23353]: Failed password for invalid user nidzieko from 181.48.58.162 port 43578 ssh2
Nov 14 22:10:30 itv-usvr-01 sshd[23677]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=181.48.58.162  user=root
Nov 14 22:10:32 itv-usvr-01 sshd[23677]: Failed password for root from 181.48.58.162 port 34321 ssh2

7547/tcp 873/tcp 6379/tcp...
[2019-09-15/11-15]47pkt,15pt.(tcp),1pt.(udp)