Jun 22 13:59:57 inter-technics sshd[26682]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.82  user=root
Jun 22 13:59:59 inter-technics sshd[26682]: Failed password for root from 120.31.138.82 port 36486 ssh2
Jun 22 14:03:34 inter-technics sshd[26925]: Invalid user alex from 120.31.138.82 port 33842
Jun 22 14:03:34 inter-technics sshd[26925]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.82
Jun 22 14:03:34 inter-technics sshd[26925]: Invalid user alex from 120.31.138.82 port 33842
Jun 22 14:03:36 inter-technics sshd[26925]: Failed password for invalid user alex from 120.31.138.82 port 33842 ssh2
...

Brute force SMTP login attempted.
...

(sshd) Failed SSH login from 120.31.138.82 (CN/China/ns1.eflydns.net): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: May 21 04:43:34 host sshd[20611]: Invalid user niv from 120.31.138.82 port 38802

20 attempts against mh-ssh on install-test

21 attempts against mh-ssh on cloud

2020-05-11T09:07:27.9494401495-001 sshd[22550]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.82  user=dbus
2020-05-11T09:07:30.3064401495-001 sshd[22550]: Failed password for dbus from 120.31.138.82 port 45575 ssh2
2020-05-11T09:11:31.0564981495-001 sshd[22742]: Invalid user mike from 120.31.138.82 port 41075
2020-05-11T09:11:31.0644321495-001 sshd[22742]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.82
2020-05-11T09:11:31.0564981495-001 sshd[22742]: Invalid user mike from 120.31.138.82 port 41075
2020-05-11T09:11:32.5835381495-001 sshd[22742]: Failed password for invalid user mike from 120.31.138.82 port 41075 ssh2
...

Brute-force attempt banned

May  2 18:16:36 host sshd[2907]: Address 120.31.138.82 maps to nxxxxxxx.eflydns.net, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
May  2 18:16:36 host sshd[2907]: Invalid user speedtest from 120.31.138.82
May  2 18:16:36 host sshd[2907]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.82 
May  2 18:16:38 host sshd[2907]: Failed password for invalid user speedtest from 120.31.138.82 port 56699 ssh2
May  2 18:16:38 host sshd[2907]: Received disconnect from 120.31.138.82: 11: Bye Bye [preauth]
May  2 18:25:52 host sshd[28803]: Address 120.31.138.82 maps to nxxxxxxx.eflydns.net, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
May  2 18:25:52 host sshd[28803]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.82  user=r.r
May  2 18:25:54 host sshd[28803]: Failed password for r.r from 120.31.138.82 port 44342 ssh2
May  2 18:25:54........
-------------------------------

SSH brute-force attack detected from [120.31.138.79]

(sshd) Failed SSH login from 120.31.138.79 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Oct  9 04:43:11 server2 sshd[5269]: Invalid user prueba1 from 120.31.138.79
Oct  9 04:43:11 server2 sshd[5269]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.79 
Oct  9 04:43:13 server2 sshd[5269]: Failed password for invalid user prueba1 from 120.31.138.79 port 55590 ssh2
Oct  9 04:57:26 server2 sshd[12920]: Invalid user sales1 from 120.31.138.79
Oct  9 04:57:26 server2 sshd[12920]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.79

$f2bV_matches

Sep 28 12:15:07 Tower sshd[27278]: Connection from 120.31.138.70 port 52092 on 192.168.10.220 port 22 rdomain ""
Sep 28 12:15:10 Tower sshd[27278]: Invalid user pradeep from 120.31.138.70 port 52092
Sep 28 12:15:10 Tower sshd[27278]: error: Could not get shadow information for NOUSER
Sep 28 12:15:10 Tower sshd[27278]: Failed password for invalid user pradeep from 120.31.138.70 port 52092 ssh2
Sep 28 12:15:13 Tower sshd[27278]: Received disconnect from 120.31.138.70 port 52092:11: Bye Bye [preauth]
Sep 28 12:15:13 Tower sshd[27278]: Disconnected from invalid user pradeep 120.31.138.70 port 52092 [preauth]

$f2bV_matches

Sep 18 18:54:41 prox sshd[4371]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.70 
Sep 18 18:54:43 prox sshd[4371]: Failed password for invalid user app-ohras from 120.31.138.70 port 45194 ssh2

Sep 18 07:30:47 inter-technics sshd[17768]: Invalid user al23 from 120.31.138.70 port 57150
Sep 18 07:30:47 inter-technics sshd[17768]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.70
Sep 18 07:30:47 inter-technics sshd[17768]: Invalid user al23 from 120.31.138.70 port 57150
Sep 18 07:30:49 inter-technics sshd[17768]: Failed password for invalid user al23 from 120.31.138.70 port 57150 ssh2
Sep 18 07:34:38 inter-technics sshd[17924]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.70  user=root
Sep 18 07:34:41 inter-technics sshd[17924]: Failed password for root from 120.31.138.70 port 49806 ssh2
...

Sep 14 07:06:38 srv-ubuntu-dev3 sshd[16363]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.79  user=root
Sep 14 07:06:40 srv-ubuntu-dev3 sshd[16363]: Failed password for root from 120.31.138.79 port 59588 ssh2
Sep 14 07:08:21 srv-ubuntu-dev3 sshd[16541]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.79  user=root
Sep 14 07:08:23 srv-ubuntu-dev3 sshd[16541]: Failed password for root from 120.31.138.79 port 48234 ssh2
Sep 14 07:09:59 srv-ubuntu-dev3 sshd[16713]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.79  user=root
Sep 14 07:10:01 srv-ubuntu-dev3 sshd[16713]: Failed password for root from 120.31.138.79 port 36882 ssh2
Sep 14 07:13:25 srv-ubuntu-dev3 sshd[17077]: Invalid user ping from 120.31.138.79
Sep 14 07:13:25 srv-ubuntu-dev3 sshd[17077]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rh
...

$f2bV_matches

2020-09-09T13:38:47.687610mail.broermann.family sshd[9137]: Failed password for root from 120.31.138.70 port 47012 ssh2
2020-09-09T13:43:08.157726mail.broermann.family sshd[9286]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.70  user=root
2020-09-09T13:43:10.708953mail.broermann.family sshd[9286]: Failed password for root from 120.31.138.70 port 42840 ssh2
2020-09-09T13:47:09.520651mail.broermann.family sshd[9415]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.70  user=root
2020-09-09T13:47:11.489818mail.broermann.family sshd[9415]: Failed password for root from 120.31.138.70 port 38670 ssh2
...

Invalid user run from 120.31.138.70 port 37102

Sep  8 19:06:10 abendstille sshd\[11908\]: Invalid user admin from 120.31.138.70
Sep  8 19:06:10 abendstille sshd\[11908\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.70
Sep  8 19:06:12 abendstille sshd\[11908\]: Failed password for invalid user admin from 120.31.138.70 port 57322 ssh2
Sep  8 19:10:15 abendstille sshd\[16677\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.70  user=root
Sep  8 19:10:17 abendstille sshd\[16677\]: Failed password for root from 120.31.138.70 port 46478 ssh2
...

Aug 29 14:33:57 vps639187 sshd\[3217\]: Invalid user admin from 120.31.138.79 port 40096
Aug 29 14:33:57 vps639187 sshd\[3217\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.79
Aug 29 14:33:59 vps639187 sshd\[3217\]: Failed password for invalid user admin from 120.31.138.79 port 40096 ssh2
...

Aug 25 18:18:05 gw1 sshd[18653]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.31.138.79
Aug 25 18:18:07 gw1 sshd[18653]: Failed password for invalid user serv from 120.31.138.79 port 55488 ssh2
...

Invalid user sinusbot from 120.31.138.70 port 34008

Bruteforce detected by fail2ban

Fail2Ban Ban Triggered (2)

2020-10-11T19:09:14.862578mail.broermann.family sshd[14614]: Failed password for invalid user liz from 37.57.169.85 port 55622 ssh2
2020-10-11T19:12:42.074738mail.broermann.family sshd[14909]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.57.169.85  user=root
2020-10-11T19:12:44.468324mail.broermann.family sshd[14909]: Failed password for root from 37.57.169.85 port 59152 ssh2
2020-10-11T19:16:12.224366mail.broermann.family sshd[15195]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.57.169.85  user=root
2020-10-11T19:16:14.449572mail.broermann.family sshd[15195]: Failed password for root from 37.57.169.85 port 34428 ssh2
...

Oct 11 21:41:50 vm0 sshd[3369]: Failed password for root from 114.67.95.188 port 54834 ssh2
...

Unauthorized connection attempt detected from IP address 31.168.219.28 to port 81

SSH bruteforce

Fail2Ban

Oct 11 21:35:23 onepixel sshd[2293424]: Invalid user web from 69.55.49.187 port 55880
Oct 11 21:35:23 onepixel sshd[2293424]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.55.49.187 
Oct 11 21:35:23 onepixel sshd[2293424]: Invalid user web from 69.55.49.187 port 55880
Oct 11 21:35:25 onepixel sshd[2293424]: Failed password for invalid user web from 69.55.49.187 port 55880 ssh2
Oct 11 21:38:51 onepixel sshd[2293978]: Invalid user deena from 69.55.49.187 port 33894

Brute-force attempt banned

Fail2Ban Ban Triggered

Oct 11 16:28:33 lanister sshd[12222]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.229.85.222
Oct 11 16:28:33 lanister sshd[12222]: Invalid user bunny from 111.229.85.222
Oct 11 16:28:35 lanister sshd[12222]: Failed password for invalid user bunny from 111.229.85.222 port 36960 ssh2
Oct 11 16:30:43 lanister sshd[12237]: Invalid user virtue from 111.229.85.222

2020-10-10 17:43:32.803569-0500  localhost smtpd[56735]: NOQUEUE: reject: RCPT from unknown[51.68.171.14]: 450 4.7.25 Client host rejected: cannot find your hostname, [51.68.171.14]; from= to= proto=ESMTP helo=

Oct 11 23:44:03 minden010 sshd[30845]: Failed password for root from 112.85.42.85 port 32838 ssh2
Oct 11 23:44:06 minden010 sshd[30845]: Failed password for root from 112.85.42.85 port 32838 ssh2
Oct 11 23:44:09 minden010 sshd[30845]: Failed password for root from 112.85.42.85 port 32838 ssh2
Oct 11 23:44:15 minden010 sshd[30845]: error: maximum authentication attempts exceeded for root from 112.85.42.85 port 32838 ssh2 [preauth]
...

(sshd) Failed SSH login from 58.87.120.53 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Oct 11 16:52:57 optimus sshd[9239]: Invalid user system from 58.87.120.53
Oct 11 16:52:57 optimus sshd[9239]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=58.87.120.53 
Oct 11 16:52:58 optimus sshd[9239]: Failed password for invalid user system from 58.87.120.53 port 36622 ssh2
Oct 11 16:56:51 optimus sshd[10844]: Invalid user josh from 58.87.120.53
Oct 11 16:56:51 optimus sshd[10844]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=58.87.120.53

10.10.2020 22:47:50 - RDP Login Fail Detected by 
https://www.elinox.de/RDP-Wächter