[2020-08-06 03:31:41] NOTICE[1248][C-00004397] chan_sip.c: Call from '' (62.173.138.147:55000) to extension '3290901148122518017' rejected because extension not found in context 'public'.
[2020-08-06 03:31:41] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-06T03:31:41.691-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="3290901148122518017",SessionID="0x7f27203d4058",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.173.138.147/55000",ACLName="no_extension_match"
[2020-08-06 03:32:10] NOTICE[1248][C-00004398] chan_sip.c: Call from '' (62.173.138.147:50638) to extension '32090901148122518017' rejected because extension not found in context 'public'.
[2020-08-06 03:32:10] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-06T03:32:10.871-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="32090901148122518017",SessionID="0x7f27200a09d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",Rem
...

[2020-08-05 12:31:32] NOTICE[1248][C-0000412e] chan_sip.c: Call from '' (62.173.138.147:55951) to extension '16330901148122518017' rejected because extension not found in context 'public'.
[2020-08-05 12:31:32] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-05T12:31:32.461-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="16330901148122518017",SessionID="0x7f27205a5c28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.173.138.147/55951",ACLName="no_extension_match"
[2020-08-05 12:31:57] NOTICE[1248][C-0000412f] chan_sip.c: Call from '' (62.173.138.147:60071) to extension '16430901148122518017' rejected because extension not found in context 'public'.
[2020-08-05 12:31:57] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-05T12:31:57.875-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="16430901148122518017",SessionID="0x7f2720178398",LocalAddress="IPV4/UDP/192.168.244.6/5060",R
...

[2020-08-05 04:41:10] NOTICE[1248][C-0000401c] chan_sip.c: Call from '' (62.173.138.147:52565) to extension '0-010901148122518017' rejected because extension not found in context 'public'.
[2020-08-05 04:41:10] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-05T04:41:10.417-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0-010901148122518017",SessionID="0x7f27200a09d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.173.138.147/52565",ACLName="no_extension_match"
[2020-08-05 04:41:42] NOTICE[1248][C-0000401d] chan_sip.c: Call from '' (62.173.138.147:60527) to extension '0-10901148122518017' rejected because extension not found in context 'public'.
[2020-08-05 04:41:42] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-05T04:41:42.545-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0-10901148122518017",SessionID="0x7f27200a09d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",Rem
...

[2020-08-04 19:12:02] NOTICE[1248][C-00003e33] chan_sip.c: Call from '' (62.173.138.147:58075) to extension '17011*48122518017' rejected because extension not found in context 'public'.
[2020-08-04 19:12:02] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-04T19:12:02.582-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="17011*48122518017",SessionID="0x7f272012c148",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.173.138.147/58075",ACLName="no_extension_match"
[2020-08-04 19:12:30] NOTICE[1248][C-00003e34] chan_sip.c: Call from '' (62.173.138.147:64455) to extension '170011*48122518017' rejected because extension not found in context 'public'.
[2020-08-04 19:12:30] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-04T19:12:30.591-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="170011*48122518017",SessionID="0x7f27200a09d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddre
...

[2020-08-04 11:03:53] NOTICE[1248][C-00003c65] chan_sip.c: Call from '' (62.173.138.147:57330) to extension '0-0101148122518017' rejected because extension not found in context 'public'.
[2020-08-04 11:03:53] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-04T11:03:53.217-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0-0101148122518017",SessionID="0x7f27205a5c28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.173.138.147/57330",ACLName="no_extension_match"
[2020-08-04 11:04:17] NOTICE[1248][C-00003c66] chan_sip.c: Call from '' (62.173.138.147:61285) to extension '1230101148122518017' rejected because extension not found in context 'public'.
[2020-08-04 11:04:17] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-04T11:04:17.852-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="1230101148122518017",SessionID="0x7f272007c5b8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteA
...

[2020-08-04 02:50:47] NOTICE[1248][C-00003a6d] chan_sip.c: Call from '' (62.173.138.147:64620) to extension '1110901148122518017' rejected because extension not found in context 'public'.
[2020-08-04 02:50:47] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-04T02:50:47.932-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="1110901148122518017",SessionID="0x7f272024a178",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.173.138.147/64620",ACLName="no_extension_match"
[2020-08-04 02:51:20] NOTICE[1248][C-00003a6e] chan_sip.c: Call from '' (62.173.138.147:64503) to extension '2220901148122518017' rejected because extension not found in context 'public'.
[2020-08-04 02:51:20] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-04T02:51:20.489-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="2220901148122518017",SessionID="0x7f272024a178",LocalAddress="IPV4/UDP/192.168.244.6/5060",Remot
...

[2020-07-05 00:37:53] NOTICE[1197][C-000019e5] chan_sip.c: Call from '' (62.173.138.117:49752) to extension '27011101117178199140' rejected because extension not found in context 'public'.
[2020-07-05 00:37:53] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-05T00:37:53.345-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="27011101117178199140",SessionID="0x7f6d288c4af8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.173.138.117/49752",ACLName="no_extension_match"
[2020-07-05 00:38:17] NOTICE[1197][C-000019e6] chan_sip.c: Call from '' (62.173.138.117:64732) to extension '280101117178199140' rejected because extension not found in context 'public'.
[2020-07-05 00:38:17] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-05T00:38:17.437-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="280101117178199140",SessionID="0x7f6d2806bc78",LocalAddress="IPV4/UDP/192.168.244.6/5060",Remot
...

Scanning random ports - tries to find possible vulnerable services

fail2ban honeypot

Dec 20 12:10:18 debian-2gb-nbg1-2 kernel: \[492980.813178\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=62.173.138.66 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=25418 DF PROTO=TCP SPT=20004 DPT=8189 WINDOW=512 RES=0x00 SYN URGP=0

Dec 19 21:36:55 debian-2gb-nbg1-2 kernel: \[440581.593190\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=62.173.138.66 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=34646 DF PROTO=TCP SPT=20005 DPT=5443 WINDOW=512 RES=0x00 SYN URGP=0

Multiport scan : 12 ports scanned 42 1234 2121 2132 2211 3333 5555 8759 9013 9070 9875 14464

MultiHost/MultiPort Probe, Scan, Hack -

fail2ban honeypot

fail2ban honeypot

port scan and connect, tcp 23 (telnet)

445/tcp 1433/tcp...
[2019-12-13/2020-02-09]6pkt,2pt.(tcp)

2020-02-09T06:37:14.804528-07:00 suse-nuc sshd[15786]: Invalid user gsj from 128.199.142.148 port 35247
...

Feb  9 14:59:08 vps691689 sshd[2654]: Failed password for root from 222.186.3.249 port 20332 ssh2
Feb  9 15:00:14 vps691689 sshd[2663]: Failed password for root from 222.186.3.249 port 29490 ssh2
...

Failed password for invalid user puy from 36.7.82.157 port 38436 ssh2
Invalid user egl from 36.7.82.157 port 34870
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.7.82.157
Failed password for invalid user egl from 36.7.82.157 port 34870 ssh2
Invalid user gdc from 36.7.82.157 port 59542

Feb  9 14:37:28 grey postfix/smtpd\[12675\]: NOQUEUE: reject: RCPT from data2-81-100.cgates.lt\[77.221.81.100\]: 554 5.7.1 Service unavailable\; Client host \[77.221.81.100\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[77.221.81.100\]\; from=\ to=\ proto=ESMTP helo=\
...

Feb  9 14:37:39 jane sshd[30788]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.198.5.79 
Feb  9 14:37:41 jane sshd[30788]: Failed password for invalid user ajz from 139.198.5.79 port 34280 ssh2
...

Feb  9 15:01:21 legacy sshd[31987]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.99.75.141
Feb  9 15:01:23 legacy sshd[31987]: Failed password for invalid user ayo from 167.99.75.141 port 41608 ssh2
Feb  9 15:04:52 legacy sshd[32190]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.99.75.141
...

Brute forcing email accounts

Feb  9 15:35:40 site3 sshd\[43666\]: Invalid user eke from 36.226.99.74
Feb  9 15:35:40 site3 sshd\[43666\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.226.99.74
Feb  9 15:35:42 site3 sshd\[43666\]: Failed password for invalid user eke from 36.226.99.74 port 44826 ssh2
Feb  9 15:37:37 site3 sshd\[43674\]: Invalid user rdc from 36.226.99.74
Feb  9 15:37:37 site3 sshd\[43674\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.226.99.74
...

Feb  9 03:34:30 auw2 sshd\[4019\]: Invalid user mdd from 52.138.212.76
Feb  9 03:34:30 auw2 sshd\[4019\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.138.212.76
Feb  9 03:34:33 auw2 sshd\[4019\]: Failed password for invalid user mdd from 52.138.212.76 port 51722 ssh2
Feb  9 03:37:44 auw2 sshd\[4320\]: Invalid user tom from 52.138.212.76
Feb  9 03:37:44 auw2 sshd\[4320\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.138.212.76

1581255456 - 02/09/2020 14:37:36 Host: 86.108.14.215/86.108.14.215 Port: 445 TCP Blocked

Port probing on unauthorized port 23

port scan and connect, tcp 1433 (ms-sql-s)

Telnet Server BruteForce Attack