\[2019-10-02 10:31:35\] SECURITY\[1715\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2019-10-02T10:31:35.137+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="\",SessionID="569253123-542477898-1895812680",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/158.69.226.6/57442",Challenge="1570005095/ab027d4bbef7adef4c76f623da31c90c",Response="d010c9bc7b0b6170a63983f369576d3a",ExpectedResponse=""
\[2019-10-02 10:31:35\] SECURITY\[1715\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2019-10-02T10:31:35.431+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="\",SessionID="569253123-542477898-1895812680",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/158.69.226.6/57442",Challenge="1570005095/ab027d4bbef7adef4c76f623da31c90c",Response="f8a2ebb6d3a41456a0eaad17005ed6cc",ExpectedResponse=""
\[2019-10-02 10:31:35\] SECURITY\[1715\] res_security_log.c: SecurityEvent="ChallengeResponse

\[2019-09-11 23:58:17\] SECURITY\[1849\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-09-11T23:58:17.065-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="300011442922550329",SessionID="0x7fd9a86cbbd8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/158.69.226.6/50622",ACLName="no_extension_match"
\[2019-09-12 00:01:16\] SECURITY\[1849\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-09-12T00:01:16.838-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="200011442922550329",SessionID="0x7fd9a863a768",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/158.69.226.6/54856",ACLName="no_extension_match"
\[2019-09-12 00:04:00\] SECURITY\[1849\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-09-12T00:04:00.291-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="100011442922550329",SessionID="0x7fd9a863a768",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/158.69.226.6/61697",ACLName="

 TCP (SYN) 158.69.226.175:54004 -> port 27983, len 44

TCP port : 27983

 TCP (SYN) 158.69.226.175:54004 -> port 27983, len 44

Port scanning [2 denied]

Aug  2 15:40:37 debian-2gb-nbg1-2 kernel: \[18634112.539997\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=158.69.226.175 DST=195.201.40.59 LEN=40 TOS=0x18 PREC=0x00 TTL=239 ID=58485 PROTO=TCP SPT=46968 DPT=22222 WINDOW=1024 RES=0x00 SYN URGP=0

 TCP (SYN) 158.69.226.175:44819 -> port 25259, len 44

15013/tcp 27567/tcp 27275/tcp...
[2020-06-21/07-07]53pkt,19pt.(tcp)

portscan

Mar 13 11:12:52 aragorn sshd[20388]: Invalid user odoo from 158.69.226.107
Mar 13 11:12:53 aragorn sshd[20390]: Invalid user test from 158.69.226.107
Mar 13 11:12:53 aragorn sshd[20392]: User postgres from ns523267.ip-158-69-226.net not allowed because not listed in AllowUsers
Mar 13 11:12:53 aragorn sshd[20394]: Invalid user oracle from 158.69.226.107
...

Detected by Fail2Ban

Feb  8 07:55:28 server sshd\[5362\]: Invalid user rft from 158.69.226.175
Feb  8 07:55:28 server sshd\[5362\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns523335.ip-158-69-226.net 
Feb  8 07:55:30 server sshd\[5362\]: Failed password for invalid user rft from 158.69.226.175 port 55605 ssh2
Feb  8 07:58:37 server sshd\[5584\]: Invalid user rft from 158.69.226.175
Feb  8 07:58:37 server sshd\[5584\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns523335.ip-158-69-226.net 
...

Feb  7 17:25:31 tuxlinux sshd[38070]: Invalid user ezk from 158.69.226.175 port 46869
Feb  7 17:25:31 tuxlinux sshd[38070]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=158.69.226.175 
Feb  7 17:25:31 tuxlinux sshd[38070]: Invalid user ezk from 158.69.226.175 port 46869
Feb  7 17:25:31 tuxlinux sshd[38070]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=158.69.226.175 
Feb  7 17:25:31 tuxlinux sshd[38070]: Invalid user ezk from 158.69.226.175 port 46869
Feb  7 17:25:31 tuxlinux sshd[38070]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=158.69.226.175 
Feb  7 17:25:33 tuxlinux sshd[38070]: Failed password for invalid user ezk from 158.69.226.175 port 46869 ssh2
...

2020-02-06T08:32:12.6921761495-001 sshd[37707]: Invalid user uwf from 158.69.226.175 port 43727
2020-02-06T08:32:12.7045611495-001 sshd[37707]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns523335.ip-158-69-226.net
2020-02-06T08:32:12.6921761495-001 sshd[37707]: Invalid user uwf from 158.69.226.175 port 43727
2020-02-06T08:32:14.1958071495-001 sshd[37707]: Failed password for invalid user uwf from 158.69.226.175 port 43727 ssh2
2020-02-06T08:44:11.4685801495-001 sshd[38399]: Invalid user jzk from 158.69.226.175 port 34271
2020-02-06T08:44:11.4783661495-001 sshd[38399]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns523335.ip-158-69-226.net
2020-02-06T08:44:11.4685801495-001 sshd[38399]: Invalid user jzk from 158.69.226.175 port 34271
2020-02-06T08:44:13.6839741495-001 sshd[38399]: Failed password for invalid user jzk from 158.69.226.175 port 34271 ssh2
2020-02-06T08:48:15.2886381495-001 sshd[38622]: 
...

Feb  3 14:38:32 legacy sshd[10148]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=158.69.226.175
Feb  3 14:38:34 legacy sshd[10148]: Failed password for invalid user venus from 158.69.226.175 port 34845 ssh2
Feb  3 14:41:16 legacy sshd[10322]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=158.69.226.175
...

Jan 13 01:38:30 mout sshd[7743]: Invalid user c from 158.69.226.175 port 48698

SSH bruteforce

SSH Invalid Login

$f2bV_matches

DATE:2020-10-06 20:45:50, IP:59.144.139.18, PORT:ssh SSH brute force auth (docker-dc)

Oct  6 21:43:44 amit sshd\[11263\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=176.122.169.95  user=root
Oct  6 21:43:46 amit sshd\[11263\]: Failed password for root from 176.122.169.95 port 33002 ssh2
Oct  6 21:52:18 amit sshd\[10817\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=176.122.169.95  user=root
...

[N3.H3.VM3] Port Scanner Detected Blocked by UFW

2020-10-06T23:01:08.396952abusebot-2.cloudsearch.cf sshd[25498]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.57  user=root
2020-10-06T23:01:10.747605abusebot-2.cloudsearch.cf sshd[25498]: Failed password for root from 222.186.30.57 port 34666 ssh2
2020-10-06T23:01:12.783703abusebot-2.cloudsearch.cf sshd[25498]: Failed password for root from 222.186.30.57 port 34666 ssh2
2020-10-06T23:01:08.396952abusebot-2.cloudsearch.cf sshd[25498]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.57  user=root
2020-10-06T23:01:10.747605abusebot-2.cloudsearch.cf sshd[25498]: Failed password for root from 222.186.30.57 port 34666 ssh2
2020-10-06T23:01:12.783703abusebot-2.cloudsearch.cf sshd[25498]: Failed password for root from 222.186.30.57 port 34666 ssh2
2020-10-06T23:01:08.396952abusebot-2.cloudsearch.cf sshd[25498]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruse
...

Oct  6 09:17:19 ajax sshd[29654]: Failed password for root from 3.134.160.205 port 46890 ssh2

Oct  6 22:33:34 s2 sshd[29233]: Failed password for root from 112.13.200.154 port 5040 ssh2
Oct  6 22:56:07 s2 sshd[30500]: Failed password for root from 112.13.200.154 port 5043 ssh2

2020-10-07T02:07:42.153079lavrinenko.info sshd[12140]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.76  user=root
2020-10-07T02:07:44.593850lavrinenko.info sshd[12140]: Failed password for root from 222.186.30.76 port 40526 ssh2
2020-10-07T02:07:42.153079lavrinenko.info sshd[12140]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.76  user=root
2020-10-07T02:07:44.593850lavrinenko.info sshd[12140]: Failed password for root from 222.186.30.76 port 40526 ssh2
2020-10-07T02:07:48.363148lavrinenko.info sshd[12140]: Failed password for root from 222.186.30.76 port 40526 ssh2
...

2020-10-06T20:16:13.845549server.espacesoutien.com sshd[4029]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=64.227.94.175  user=root
2020-10-06T20:16:15.117722server.espacesoutien.com sshd[4029]: Failed password for root from 64.227.94.175 port 50204 ssh2
2020-10-06T20:19:27.806123server.espacesoutien.com sshd[4134]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=64.227.94.175  user=root
2020-10-06T20:19:30.378859server.espacesoutien.com sshd[4134]: Failed password for root from 64.227.94.175 port 55814 ssh2
...

Honeypot hit.

Lines containing failures of 51.38.159.166
Oct  4 06:41:31 penfold postfix/smtpd[22846]: connect from ip166.ip-51-38-159.eu[51.38.159.166]
Oct  4 06:41:32 penfold postfix/smtpd[22846]: Anonymous TLS connection established from ip166.ip-51-38-159.eu[51.38.159.166]: TLSv1.2 whostnameh cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bhostnames)
Oct  4 06:41:32 penfold postfix/smtpd[22846]: CD7DB20D19: client=ip166.ip-51-38-159.eu[51.38.159.166]
Oct  4 06:41:34 penfold opendkim[23058]: CD7DB20D19: ip166.ip-51-38-159.eu [51.38.159.166] not internal
Oct  4 06:41:38 penfold postfix/smtpd[22846]: disconnect from ip166.ip-51-38-159.eu[51.38.159.166] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quhostname=1 commands=7
Oct  5 15:52:21 penfold postfix/smtpd[17861]: connect from ip166.ip-51-38-159.eu[51.38.159.166]
Oct  5 15:52:21 penfold postfix/smtpd[17861]: Anonymous TLS connection established from ip166.ip-51-38-159.eu[51.38.159.166]: TLSv1.2 whostnameh cipher ECDHE-RSA-AES256-GCM-SHA384 (........
------------------------------

Oct 5 22:41:05 *hidden* kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:3f:fd:58:00:08:e3:ff:fd:90:08:00 SRC=172.69.63.40 DST=79.143.186.54 LEN=52 TOS=0x00 PREC=0x00 TTL=59 ID=8645 DF PROTO=TCP SPT=23302 DPT=80 WINDOW=65535 RES=0x00 SYN URGP=0 Oct 5 22:41:06 *hidden* kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:3f:fd:58:00:08:e3:ff:fd:90:08:00 SRC=172.69.63.40 DST=79.143.186.54 LEN=52 TOS=0x00 PREC=0x00 TTL=59 ID=8646 DF PROTO=TCP SPT=23302 DPT=80 WINDOW=65535 RES=0x00 SYN URGP=0 Oct 5 22:41:08 *hidden* kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:3f:fd:58:00:08:e3:ff:fd:90:08:00 SRC=172.69.63.40 DST=79.143.186.54 LEN=52 TOS=0x00 PREC=0x00 TTL=59 ID=8647 DF PROTO=TCP SPT=23302 DPT=80 WINDOW=65535 RES=0x00 SYN URGP=0

Oct  6 19:10:26 h2646465 sshd[7849]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.79.156.248  user=root
Oct  6 19:10:28 h2646465 sshd[7849]: Failed password for root from 51.79.156.248 port 44990 ssh2
Oct  6 19:44:13 h2646465 sshd[11634]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.79.156.248  user=root
Oct  6 19:44:15 h2646465 sshd[11634]: Failed password for root from 51.79.156.248 port 59914 ssh2
Oct  6 19:45:48 h2646465 sshd[12134]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.79.156.248  user=root
Oct  6 19:45:50 h2646465 sshd[12134]: Failed password for root from 51.79.156.248 port 43726 ssh2
Oct  6 19:47:26 h2646465 sshd[12188]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.79.156.248  user=root
Oct  6 19:47:28 h2646465 sshd[12188]: Failed password for root from 51.79.156.248 port 55768 ssh2
Oct  6 19:49:00 h2646465 sshd[