Excessive Port-Scanning

Excessive Port-Scanning

04.02.2020 05:06:04 Connection to port 5060 blocked by firewall

\[2020-01-21 14:50:52\] SECURITY\[2093\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-01-21T14:50:52.446+0100",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f241b0d0f98",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.229.173/6315",Challenge="064a2a3d",ReceivedChallenge="064a2a3d",ReceivedHash="85df6811b6cee7d1fd75417c4ffd0089"
\[2020-01-21 14:50:52\] SECURITY\[2093\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-01-21T14:50:52.795+0100",Severity="Error",Service="SIP",EventVersion="2",AccountID="100",SessionID="0x7f241af64478",LocalAddress="IPV4/UDP/204.8.216.89/5060",RemoteAddress="IPV4/UDP/37.49.229.173/6315",Challenge="54977e73",ReceivedChallenge="54977e73",ReceivedHash="72935d5eae4ab9d1c49c4fc4a94eff01"
\[2020-01-21 14:50:52\] SECURITY\[2093\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-01-21T14:50:52.860+0100",Severity="Error",Service="SIP",EventVersion="2",Accoun
...

[2020-01-20 08:08:28] NOTICE[1148][C-000002f1] chan_sip.c: Call from '' (37.49.229.173:6192) to extension '288667113' rejected because extension not found in context 'public'.
[2020-01-20 08:08:28] SECURITY[1163] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-01-20T08:08:28.841-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="288667113",SessionID="0x7fd82c144298",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.229.173/6192",ACLName="no_extension_match"
[2020-01-20 08:08:29] NOTICE[1148][C-000002f2] chan_sip.c: Call from '' (37.49.229.173:6192) to extension '64900' rejected because extension not found in context 'public'.
[2020-01-20 08:08:29] SECURITY[1163] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-01-20T08:08:29.276-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="64900",SessionID="0x7fd82c1014f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.229.173/6192",ACLName="no_ext
...

[2020-09-13 15:33:10] NOTICE[1239][C-00003220] chan_sip.c: Call from '' (37.49.229.237:25327) to extension '0035348323395006' rejected because extension not found in context 'public'.
[2020-09-13 15:33:10] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-13T15:33:10.019-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0035348323395006",SessionID="0x7f4d481353f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.229.237/5060",ACLName="no_extension_match"
[2020-09-13 15:34:47] NOTICE[1239][C-00003227] chan_sip.c: Call from '' (37.49.229.237:36081) to extension '0035448323395006' rejected because extension not found in context 'public'.
[2020-09-13 15:34:47] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-13T15:34:47.785-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0035448323395006",SessionID="0x7f4d480d6c18",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/U
...

ET CINS Active Threat Intelligence Poor Reputation IP group 17 - port: 5060 proto: sip cat: Misc Attackbytes: 438

[2020-09-04 02:24:04] NOTICE[1194][C-0000032d] chan_sip.c: Call from '' (37.49.229.237:7410) to extension '00447537174009' rejected because extension not found in context 'public'.
[2020-09-04 02:24:04] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-04T02:24:04.219-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00447537174009",SessionID="0x7f2ddc0e4da8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.229.237/7410",ACLName="no_extension_match"
[2020-09-04 02:29:24] NOTICE[1194][C-00000334] chan_sip.c: Call from '' (37.49.229.237:5956) to extension '00447537174009' rejected because extension not found in context 'public'.
[2020-09-04 02:29:24] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-04T02:29:24.955-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00447537174009",SessionID="0x7f2ddc0bf9a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.2
...

[2020-09-03 18:47:54] NOTICE[1194][C-000000cc] chan_sip.c: Call from '' (37.49.229.237:5412) to extension '00447537174009' rejected because extension not found in context 'public'.
[2020-09-03 18:47:54] SECURITY[1233] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-03T18:47:54.364-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="00447537174009",SessionID="0x7f2ddc38f978",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.229.237/5412",ACLName="no_extension_match"
[2020-09-03 18:53:04] NOTICE[1194][C-000000d0] chan_sip.c: Call from '' (37.49.229.237:7260) to extension '00447537174009' rejected because extension not found in context 'public'.
...

VOIP hacking

SIP portscan/brute-force

Port scan denied

*Port Scan* detected from 37.49.229.237 (NL/Netherlands/Drenthe/Meppel/-). 4 hits in the last 205 seconds

[2020-08-31 10:16:15] NOTICE[1185][C-00008e3e] chan_sip.c: Call from '' (37.49.229.237:23220) to extension '447441399590' rejected because extension not found in context 'public'.
[2020-08-31 10:16:15] SECURITY[1203] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-31T10:16:15.989-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="447441399590",SessionID="0x7f10c459e698",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.229.237/5060",ACLName="no_extension_match"
[2020-08-31 10:18:29] NOTICE[1185][C-00008e40] chan_sip.c: Call from '' (37.49.229.237:20798) to extension '000447441399590' rejected because extension not found in context 'public'.
[2020-08-31 10:18:29] SECURITY[1203] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-31T10:18:29.846-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="000447441399590",SessionID="0x7f10c416cce8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.2
...

MAIL: User Login Brute Force Attempt

Failed password for invalid user from 37.49.229.213 port 41428 ssh2

[portscan] tcp/22 [SSH]
[portscan] tcp/23 [TELNET]
[scan/connect: 2 time(s)]
in blocklist.de:'listed [*unkn*]'
*(RWIN=1024)(08110942)

[2020-08-08 08:02:02] NOTICE[1248][C-00004d6e] chan_sip.c: Call from '' (37.49.229.207:7069) to extension '01148323395006' rejected because extension not found in context 'public'.
[2020-08-08 08:02:02] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-08T08:02:02.441-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="01148323395006",SessionID="0x7f27203df9b8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49.229.207/7069",ACLName="no_extension_match"
[2020-08-08 08:11:44] NOTICE[1248][C-00004d75] chan_sip.c: Call from '' (37.49.229.207:9255) to extension '901148323395006' rejected because extension not found in context 'public'.
[2020-08-08 08:11:44] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-08T08:11:44.490-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="901148323395006",SessionID="0x7f27204f0348",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/37.49
...

Port scan denied

TCP Port Scanning

leo_www

Brute-force attempt banned

Aug 11 23:07:13 srv01 postfix/smtpd\[25746\]: warning: unknown\[212.70.149.82\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 11 23:07:21 srv01 postfix/smtpd\[31948\]: warning: unknown\[212.70.149.82\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 11 23:07:22 srv01 postfix/smtpd\[31956\]: warning: unknown\[212.70.149.82\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 11 23:07:22 srv01 postfix/smtpd\[31955\]: warning: unknown\[212.70.149.82\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 11 23:07:41 srv01 postfix/smtpd\[31948\]: warning: unknown\[212.70.149.82\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

Aug 11 23:14:10 piServer sshd[11360]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.182.25.146 
Aug 11 23:14:11 piServer sshd[11360]: Failed password for invalid user gmjiadianhenhao from 107.182.25.146 port 35534 ssh2
Aug 11 23:20:59 piServer sshd[12265]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.182.25.146 
...

Aug 11 22:34:10 nextcloud sshd\[25770\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=97.74.236.154  user=root
Aug 11 22:34:11 nextcloud sshd\[25770\]: Failed password for root from 97.74.236.154 port 54286 ssh2
Aug 11 22:37:12 nextcloud sshd\[29302\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=97.74.236.154  user=root

2020-08-11T20:33:14.573341randservbullet-proofcloud-66.localdomain sshd[31336]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.32.78.219  user=root
2020-08-11T20:33:16.625012randservbullet-proofcloud-66.localdomain sshd[31336]: Failed password for root from 213.32.78.219 port 55632 ssh2
2020-08-11T20:36:47.838322randservbullet-proofcloud-66.localdomain sshd[31343]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.32.78.219  user=root
2020-08-11T20:36:49.799387randservbullet-proofcloud-66.localdomain sshd[31343]: Failed password for root from 213.32.78.219 port 55336 ssh2
...

Having lots of probing attacks from IP 128.116.65.xxx

Aug 11 23:33:52 ns37 sshd[19284]: Failed password for root from 114.112.96.30 port 55084 ssh2
Aug 11 23:33:52 ns37 sshd[19284]: Failed password for root from 114.112.96.30 port 55084 ssh2

Aug 11 23:39:12 vps639187 sshd\[17719\]: Invalid user odoo from 173.212.197.48 port 42388
Aug 11 23:39:12 vps639187 sshd\[17719\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=173.212.197.48
Aug 11 23:39:14 vps639187 sshd\[17719\]: Failed password for invalid user odoo from 173.212.197.48 port 42388 ssh2
...

sshd jail - ssh hack attempt

Telnetd brute force attack detected by fail2ban

2020-08-11T20:48:05.478807shield sshd\[17356\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=217.182.94.110  user=root
2020-08-11T20:48:06.847123shield sshd\[17356\]: Failed password for root from 217.182.94.110 port 35712 ssh2
2020-08-11T20:51:55.994885shield sshd\[17649\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=217.182.94.110  user=root
2020-08-11T20:51:57.941209shield sshd\[17649\]: Failed password for root from 217.182.94.110 port 46290 ssh2
2020-08-11T20:55:34.758028shield sshd\[17963\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=217.182.94.110  user=root

Aug 11 22:31:39 serwer sshd\[2452\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=1.71.129.108  user=root
Aug 11 22:31:42 serwer sshd\[2452\]: Failed password for root from 1.71.129.108 port 45231 ssh2
Aug 11 22:36:38 serwer sshd\[2976\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=1.71.129.108  user=root
...

Aug 11 22:31:50 vpn01 sshd[11988]: Failed password for root from 203.130.255.2 port 49158 ssh2
...

Failed password for invalid user from 222.186.42.7 port 27766 ssh2