May  4 13:09:33 mercury smtpd[1321]: ca90ab18da1735d0 smtp event=failed-command address=45.143.223.148 host=45.143.223.148 command="RCPT to:" result="550 Invalid recipient"
...

Feb 13 10:26:00 vbuntu postfix/smtpd[10117]: connect from unknown[45.143.223.148]
Feb 13 10:26:00 vbuntu postfix/smtpd[10117]: NOQUEUE: reject: RCPT from unknown[45.143.223.148]: 504 5.5.2 : Helo command rejected: need fully-qualified hostname; from=x@x helo=
Feb 13 10:26:00 vbuntu postfix/smtpd[10117]: disconnect from unknown[45.143.223.148]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=45.143.223.148

Attempting fraudulent international toll traffic

Attempting fraudulent international toll traffic

[2020-09-27 16:45:30] NOTICE[1159][C-000027e8] chan_sip.c: Call from '' (45.143.223.118:51541) to extension '0046462607543' rejected because extension not found in context 'public'.
[2020-09-27 16:45:30] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-27T16:45:30.003-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0046462607543",SessionID="0x7fcaa02d7a38",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.118/51541",ACLName="no_extension_match"
[2020-09-27 16:46:06] NOTICE[1159][C-000027e9] chan_sip.c: Call from '' (45.143.223.118:54795) to extension '01146462607543' rejected because extension not found in context 'public'.
[2020-09-27 16:46:06] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-27T16:46:06.926-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="01146462607543",SessionID="0x7fcaa02d7a38",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.
...

[2020-09-27 09:07:56] NOTICE[1159][C-000025df] chan_sip.c: Call from '' (45.143.223.118:55272) to extension '0046462607543' rejected because extension not found in context 'public'.
[2020-09-27 09:07:56] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-27T09:07:56.441-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0046462607543",SessionID="0x7fcaa00dd368",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.118/55272",ACLName="no_extension_match"
[2020-09-27 09:08:34] NOTICE[1159][C-000025e0] chan_sip.c: Call from '' (45.143.223.118:58549) to extension '01146462607543' rejected because extension not found in context 'public'.
[2020-09-27 09:08:34] SECURITY[1198] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-27T09:08:34.285-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="01146462607543",SessionID="0x7fcaa0022038",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.
...

[2020-09-10 07:51:32] NOTICE[1239][C-00000b7d] chan_sip.c: Call from '' (45.143.223.11:58071) to extension '009441904911034' rejected because extension not found in context 'public'.
[2020-09-10 07:51:32] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-10T07:51:32.925-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="009441904911034",SessionID="0x7f4d4804ac88",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.11/58071",ACLName="no_extension_match"
[2020-09-10 07:51:43] NOTICE[1239][C-00000b7e] chan_sip.c: Call from '' (45.143.223.11:63544) to extension '010441904911034' rejected because extension not found in context 'public'.
...

[2020-09-09 23:58:04] NOTICE[1239][C-00000965] chan_sip.c: Call from '' (45.143.223.11:57996) to extension '0011441904911034' rejected because extension not found in context 'public'.
[2020-09-09 23:58:04] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-09T23:58:04.578-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0011441904911034",SessionID="0x7f4d48115e28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.11/57996",ACLName="no_extension_match"
[2020-09-09 23:58:15] NOTICE[1239][C-00000966] chan_sip.c: Call from '' (45.143.223.11:63471) to extension '900441904911034' rejected because extension not found in context 'public'.
[2020-09-09 23:58:15] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-09T23:58:15.386-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="900441904911034",SessionID="0x7f4d480d6c18",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UD
...

[2020-09-09 14:41:54] NOTICE[1239][C-00000585] chan_sip.c: Call from '' (45.143.223.11:62604) to extension '9011441904911034' rejected because extension not found in context 'public'.
[2020-09-09 14:41:54] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-09T14:41:54.648-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9011441904911034",SessionID="0x7f4d4804ac88",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.11/62604",ACLName="no_extension_match"
[2020-09-09 14:42:05] NOTICE[1239][C-00000586] chan_sip.c: Call from '' (45.143.223.11:51694) to extension '000441904911034' rejected because extension not found in context 'public'.
[2020-09-09 14:42:05] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-09T14:42:05.604-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000441904911034",SessionID="0x7f4d480d6c18",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UD
...

[2020-09-06 16:00:05] NOTICE[1194][C-000015a7] chan_sip.c: Call from '' (45.143.223.106:51116) to extension '00441904911024' rejected because extension not found in context 'public'.
[2020-09-06 16:00:05] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-06T16:00:05.852-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441904911024",SessionID="0x7f2ddc04e988",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.106/51116",ACLName="no_extension_match"
[2020-09-06 16:00:42] NOTICE[1194][C-000015a8] chan_sip.c: Call from '' (45.143.223.106:53143) to extension '011441904911024' rejected because extension not found in context 'public'.
[2020-09-06 16:00:42] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-06T16:00:42.278-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="011441904911024",SessionID="0x7f2ddc04e988",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP
...

[2020-09-06 09:07:45] NOTICE[1194][C-000013a5] chan_sip.c: Call from '' (45.143.223.106:60777) to extension '011441904911024' rejected because extension not found in context 'public'.
[2020-09-06 09:07:45] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-06T09:07:45.327-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="011441904911024",SessionID="0x7f2ddc04e988",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.106/60777",ACLName="no_extension_match"
[2020-09-06 09:08:19] NOTICE[1194][C-000013a8] chan_sip.c: Call from '' (45.143.223.106:62934) to extension '000441904911024' rejected because extension not found in context 'public'.
[2020-09-06 09:08:19] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-06T09:08:19.381-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000441904911024",SessionID="0x7f2ddc04e988",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/U
...

[2020-09-06 00:47:40] NOTICE[1194][C-00001191] chan_sip.c: Call from '' (45.143.223.106:64777) to extension '900441904911024' rejected because extension not found in context 'public'.
[2020-09-06 00:47:40] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-06T00:47:40.089-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="900441904911024",SessionID="0x7f2ddc1b7848",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.106/64777",ACLName="no_extension_match"
[2020-09-06 00:48:13] NOTICE[1194][C-00001192] chan_sip.c: Call from '' (45.143.223.106:50505) to extension '009441904911024' rejected because extension not found in context 'public'.
[2020-09-06 00:48:13] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-06T00:48:13.737-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="009441904911024",SessionID="0x7f2ddc1b7848",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/U
...

[2020-09-05 17:13:14] NOTICE[1194][C-00000f3f] chan_sip.c: Call from '' (45.143.223.106:63929) to extension '00441904911024' rejected because extension not found in context 'public'.
[2020-09-05 17:13:14] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-05T17:13:14.866-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00441904911024",SessionID="0x7f2ddc0f4e48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.106/63929",ACLName="no_extension_match"
[2020-09-05 17:13:47] NOTICE[1194][C-00000f41] chan_sip.c: Call from '' (45.143.223.106:49698) to extension '011441904911024' rejected because extension not found in context 'public'.
[2020-09-05 17:13:47] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-05T17:13:47.677-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="011441904911024",SessionID="0x7f2ddc1b7848",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP
...

Rude login attack (4 tries in 1d)

Rude login attack (4 tries in 1d)

[2020-09-03 04:10:37] NOTICE[1185][C-0000a796] chan_sip.c: Call from '' (45.143.223.6:58995) to extension '219946903433909' rejected because extension not found in context 'public'.
[2020-09-03 04:10:37] SECURITY[1203] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-03T04:10:37.376-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="219946903433909",SessionID="0x7f10c4989438",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.6/58995",ACLName="no_extension_match"
[2020-09-03 04:11:08] NOTICE[1185][C-0000a798] chan_sip.c: Call from '' (45.143.223.6:63814) to extension '580846903433909' rejected because extension not found in context 'public'.
[2020-09-03 04:11:08] SECURITY[1203] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-03T04:11:08.548-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="580846903433909",SessionID="0x7f10c42761e8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.
...

[2020-09-02 23:57:02] NOTICE[1185][C-0000a62c] chan_sip.c: Call from '' (45.143.223.6:52869) to extension '936546903433909' rejected because extension not found in context 'public'.
[2020-09-02 23:57:02] SECURITY[1203] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-02T23:57:02.501-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="936546903433909",SessionID="0x7f10c4539a48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.143.223.6/52869",ACLName="no_extension_match"
[2020-09-02 23:57:40] NOTICE[1185][C-0000a62e] chan_sip.c: Call from '' (45.143.223.6:49622) to extension '361946903433909' rejected because extension not found in context 'public'.
[2020-09-02 23:57:40] SECURITY[1203] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-02T23:57:40.980-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="361946903433909",SessionID="0x7f10c42761e8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.
...

Aug  9 23:26:02 vtv3 sshd\[12516\]: Invalid user ftpuser from 222.180.162.8 port 40264
Aug  9 23:26:02 vtv3 sshd\[12516\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.180.162.8
Aug  9 23:26:04 vtv3 sshd\[12516\]: Failed password for invalid user ftpuser from 222.180.162.8 port 40264 ssh2
Aug  9 23:30:33 vtv3 sshd\[15028\]: Invalid user crichard from 222.180.162.8 port 44218
Aug  9 23:30:33 vtv3 sshd\[15028\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.180.162.8
Aug  9 23:42:51 vtv3 sshd\[20995\]: Invalid user ali from 222.180.162.8 port 34875
Aug  9 23:42:51 vtv3 sshd\[20995\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.180.162.8
Aug  9 23:42:53 vtv3 sshd\[20995\]: Failed password for invalid user ali from 222.180.162.8 port 34875 ssh2
Aug  9 23:46:57 vtv3 sshd\[22951\]: Invalid user zorro from 222.180.162.8 port 59672
Aug  9 23:46:57 vtv3 sshd\[22951\]: pa

Unauthorised access (Oct 31) SRC=109.237.94.12 LEN=40 TTL=248 ID=59350 TCP DPT=1433 WINDOW=1024 SYN

Nov  1 03:16:41 gw1 sshd[4365]: Failed password for root from 222.186.180.9 port 51418 ssh2
Nov  1 03:16:53 gw1 sshd[4365]: Failed password for root from 222.186.180.9 port 51418 ssh2
...

WordPress XMLRPC scan :: 194.36.96.129 0.264 - [31/Oct/2019:20:12:13  0000] www.[censored_1] "POST /xmlrpc.php HTTP/1.1" 200 194 "https://www.[censored_1]/" "PHP/6.3.88" "HTTP/1.1"

3389BruteforceFW21

2019-10-31T22:46:25.281391abusebot-5.cloudsearch.cf sshd\[5359\]: Invalid user lxm from 37.59.114.113 port 34518

" "

port scan and connect, tcp 22 (ssh)

Oct 31 23:13:56 minden010 sshd[13523]: Failed password for root from 222.186.3.249 port 51821 ssh2
Oct 31 23:14:52 minden010 sshd[13831]: Failed password for root from 222.186.3.249 port 40321 ssh2
...

proto=tcp  .  spt=36677  .  dpt=25  .     (Found on   Blocklist de  Oct 31)     (758)

Oct 31 19:12:51 server sshd\[1706\]: Failed password for root from 222.186.173.142 port 42104 ssh2
Nov  1 01:32:00 server sshd\[23189\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.142  user=root
Nov  1 01:32:02 server sshd\[23189\]: Failed password for root from 222.186.173.142 port 25282 ssh2
Nov  1 01:32:07 server sshd\[23189\]: Failed password for root from 222.186.173.142 port 25282 ssh2
Nov  1 01:32:11 server sshd\[23189\]: Failed password for root from 222.186.173.142 port 25282 ssh2
...

31.10.2019 20:18:59 Connection to port 2160 blocked by firewall

www.goldgier.de 35.240.182.126 \[31/Oct/2019:21:12:40 +0100\] "POST /wp-login.php HTTP/1.1" 200 8727 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
goldgier.de 35.240.182.126 \[31/Oct/2019:21:12:41 +0100\] "POST /xmlrpc.php HTTP/1.1" 301 4183 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"

proto=tcp  .  spt=52924  .  dpt=3389  .  src=108.183.170.108  .  dst=xx.xx.4.1  .     (Found on   Alienvault Oct 31)     (760)

Oct 31 23:20:45 SilenceServices sshd[23991]: Failed password for root from 51.68.192.106 port 59664 ssh2
Oct 31 23:24:29 SilenceServices sshd[26426]: Failed password for root from 51.68.192.106 port 53388 ssh2