May 11 20:17:36 gw1 sshd[29479]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.193
May 11 20:17:38 gw1 sshd[29479]: Failed password for invalid user administrator from 165.22.49.193 port 54288 ssh2
...

Invalid user lupdate from 165.22.49.42 port 32810

Oct 12 10:04:58 abendstille sshd\[19540\]: Invalid user durai from 165.22.49.42
Oct 12 10:04:58 abendstille sshd\[19540\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42
Oct 12 10:05:01 abendstille sshd\[19540\]: Failed password for invalid user durai from 165.22.49.42 port 43038 ssh2
Oct 12 10:07:06 abendstille sshd\[22080\]: Invalid user administracao from 165.22.49.42
Oct 12 10:07:06 abendstille sshd\[22080\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42
...

Banned for a week because repeated abuses, for example SSH, but not only

2020-10-08T16:49:59.538154hostname sshd[10485]: Failed password for root from 165.22.49.42 port 32980 ssh2
2020-10-08T16:53:50.811664hostname sshd[12011]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42  user=root
2020-10-08T16:53:53.308876hostname sshd[12011]: Failed password for root from 165.22.49.42 port 35762 ssh2
...

2020-09-09T05:00:16.807067suse-nuc sshd[28705]: User root from 165.22.49.219 not allowed because listed in DenyUsers
...

...

Repeated brute force against a port

Sep  7 18:15:14 ovpn sshd\[6970\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.205  user=root
Sep  7 18:15:17 ovpn sshd\[6970\]: Failed password for root from 165.22.49.205 port 49044 ssh2
Sep  7 18:24:39 ovpn sshd\[9261\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.205  user=root
Sep  7 18:24:41 ovpn sshd\[9261\]: Failed password for root from 165.22.49.205 port 49030 ssh2
Sep  7 18:28:52 ovpn sshd\[10302\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.205  user=root

2020-09-07T05:50:36.1384161495-001 sshd[59011]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.205  user=mysql
2020-09-07T05:50:37.9940741495-001 sshd[59011]: Failed password for mysql from 165.22.49.205 port 42060 ssh2
2020-09-07T05:53:11.7968251495-001 sshd[59234]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.205  user=root
2020-09-07T05:53:13.5973421495-001 sshd[59234]: Failed password for root from 165.22.49.205 port 49810 ssh2
2020-09-07T05:55:53.9024311495-001 sshd[59430]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.205  user=root
2020-09-07T05:55:55.9437711495-001 sshd[59430]: Failed password for root from 165.22.49.205 port 57554 ssh2
...

$f2bV_matches

Aug 29 11:45:45 ns3164893 sshd[22762]: Failed password for root from 165.22.49.205 port 48586 ssh2
Aug 29 11:50:12 ns3164893 sshd[22888]: Invalid user transfer from 165.22.49.205 port 56454
...

(sshd) Failed SSH login from 165.22.49.42 (SG/Singapore/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Aug 28 19:30:57 grace sshd[12438]: Invalid user ia from 165.22.49.42 port 53192
Aug 28 19:30:58 grace sshd[12438]: Failed password for invalid user ia from 165.22.49.42 port 53192 ssh2
Aug 28 19:43:02 grace sshd[13700]: Invalid user lcm from 165.22.49.42 port 52488
Aug 28 19:43:04 grace sshd[13700]: Failed password for invalid user lcm from 165.22.49.42 port 52488 ssh2
Aug 28 19:46:36 grace sshd[14137]: Invalid user developer from 165.22.49.42 port 49976

Aug 27 22:51:59 xxx sshd[27485]: Failed password for r.r from 165.22.49.205 port 51866 ssh2
Aug 27 22:52:00 xxx sshd[27485]: Received disconnect from 165.22.49.205 port 51866:11: Bye Bye [preauth]
Aug 27 22:52:00 xxx sshd[27485]: Disconnected from 165.22.49.205 port 51866 [preauth]
Aug 27 23:07:18 xxx sshd[30446]: Invalid user king from 165.22.49.205 port 39910
Aug 27 23:07:18 xxx sshd[30446]: Failed password for invalid user king from 165.22.49.205 port 39910 ssh2
Aug 27 23:07:18 xxx sshd[30446]: Received disconnect from 165.22.49.205 port 39910:11: Bye Bye [preauth]
Aug 27 23:07:18 xxx sshd[30446]: Disconnected from 165.22.49.205 port 39910 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=165.22.49.205

Time:     Sun Aug 23 22:51:37 2020 +0000
IP:       165.22.49.42 (SG/Singapore/-)
Failures: 5 (sshd)
Interval: 3600 seconds
Blocked:  Permanent Block [LF_SSHD]

Log entries:

Aug 23 22:47:16 ca-1-ams1 sshd[20470]: Invalid user abc123 from 165.22.49.42 port 37280
Aug 23 22:47:18 ca-1-ams1 sshd[20470]: Failed password for invalid user abc123 from 165.22.49.42 port 37280 ssh2
Aug 23 22:50:28 ca-1-ams1 sshd[20557]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42  user=root
Aug 23 22:50:30 ca-1-ams1 sshd[20557]: Failed password for root from 165.22.49.42 port 46150 ssh2
Aug 23 22:51:36 ca-1-ams1 sshd[20593]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42  user=root

Aug  3 23:50:26 journals sshd\[89278\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42  user=root
Aug  3 23:50:28 journals sshd\[89278\]: Failed password for root from 165.22.49.42 port 58752 ssh2
Aug  3 23:54:39 journals sshd\[89730\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42  user=root
Aug  3 23:54:40 journals sshd\[89730\]: Failed password for root from 165.22.49.42 port 43574 ssh2
Aug  3 23:58:59 journals sshd\[90176\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.49.42  user=root
...

webserver:80 [01/Oct/2019]  "GET /shell?busybox HTTP/1.1" 400 0 "-" "Mozilla/5.0"

2019-10-0114:17:201iFH5j-000056-Q8\<=info@imsuisse-sa.chH=\(imsuisse-sa.ch\)[157.44.231.123]:5566P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_plain:info@imsuisse-sa.chS=3015id=6774F757-F525-46E6-BEFE-BCB9CAA503B4@imsuisse-sa.chT=""forlua1@cox.netlureescott@aol.comlworrall@jdusd.netlynes95@cox.netcharmainemalone@integrity.commarcene@sdcrs.comramonandmarian@cox.netMbocciball@aol.com2019-10-0114:17:211iFH5k-0008Vv-Cf\<=info@imsuisse-sa.chH=\(imsuisse-sa.ch\)[177.248.200.46]:38551P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_plain:info@imsuisse-sa.chS=1905id=2A05BE77-4D4F-4450-BF5C-3CBC79BCF2BF@imsuisse-sa.chT="Bryan"forbryan.gudusky@cooledgelighting.combsadow@scilucent.combsilvay@afhoa.netburly@visa.comcab2326@aol.comca.kyhkwade@verizon.net2019-10-0114:17:111iFH5a-0008Sv-Hg\<=info@imsuisse-sa.chH=\(imsuisse-sa.ch\)[27.63.167.126]:45692P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_plain:info@imsuisse-sa.chS=2748id=A36E4757-15B2-49AD-B918-84D7396F0ABC@i

Attempt to attack host OS, exploiting network vulnerabilities, on 01-10-2019 04:45:16.

(sshd) Failed SSH login from 58.254.132.239 (CN/China/-): 3 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Oct  1 09:04:33 andromeda sshd[4140]: Invalid user godreamz from 58.254.132.239 port 42645
Oct  1 09:04:35 andromeda sshd[4140]: Failed password for invalid user godreamz from 58.254.132.239 port 42645 ssh2
Oct  1 09:08:47 andromeda sshd[4612]: Invalid user anu from 58.254.132.239 port 42646

Automatic report - Port Scan Attack

2019-10-0114:17:291iFH5s-00007H-UX\<=info@imsuisse-sa.chH=\(imsuisse-sa.ch\)[189.199.60.177]:54346P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_plain:info@imsuisse-sa.chS=2119id=808417A4-602F-4E44-B206-5B8299257CFC@imsuisse-sa.chT="Kelly"forkconeill2@optonline.netKimberly.salo@slumberland.comkjerstimoline@aol.comkkniefel@prestagefoods.comkory@weightandwellness.comkristen@weightandwellness.comkristin.finberg@smiths-medical.comlaw@sheridanlaw.orgleseink@frontiernet.net2019-10-0114:17:301iFH5t-00006z-IW\<=info@imsuisse-sa.chH=\(imsuisse-sa.ch\)[185.103.88.14]:49390P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_plain:info@imsuisse-sa.chS=2434id=2E95D3F7-F0BD-4605-BAC4-DEBC699BB1C9@imsuisse-sa.chT=""forbarrie@copyaz.combbares@certcollision.comdrbeck@dcpracticetools.comdrkarenbecker@mercola.comVictoria@ExtraordinaryOutcomes.combethnbailee@yahoo.comElizabelle@aol.combevcurry1111@wbhsi.netbfuzie@farmersagent.combhk7825@aol.combigchuck56@hotmail.comBill.Kingman@hibu.comjess@bil

2019-09-30T23:48:22.6881471495-001 sshd\[39405\]: Invalid user alex from 77.232.128.87 port 40487
2019-09-30T23:48:22.6953041495-001 sshd\[39405\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=voip.bks-tv.ru
2019-09-30T23:48:25.0791041495-001 sshd\[39405\]: Failed password for invalid user alex from 77.232.128.87 port 40487 ssh2
2019-09-30T23:52:21.7553341495-001 sshd\[39709\]: Invalid user nnn from 77.232.128.87 port 60710
2019-09-30T23:52:21.7583621495-001 sshd\[39709\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=voip.bks-tv.ru
2019-09-30T23:52:23.4596971495-001 sshd\[39709\]: Failed password for invalid user nnn from 77.232.128.87 port 60710 ssh2
...

Oct  1 07:19:15 thevastnessof sshd[20893]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.151.30.141
...

Oct  1 15:15:03 hosting sshd[23761]: Invalid user elias from 177.68.148.10 port 41108
Oct  1 15:15:03 hosting sshd[23761]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.68.148.10
Oct  1 15:15:03 hosting sshd[23761]: Invalid user elias from 177.68.148.10 port 41108
Oct  1 15:15:04 hosting sshd[23761]: Failed password for invalid user elias from 177.68.148.10 port 41108 ssh2
Oct  1 15:29:22 hosting sshd[25119]: Invalid user malaga from 177.68.148.10 port 64284
...

Fail2Ban Ban Triggered

Oct  1 12:57:38 rotator sshd\[622\]: Failed password for root from 92.62.139.103 port 40700 ssh2Oct  1 12:57:40 rotator sshd\[622\]: Failed password for root from 92.62.139.103 port 40700 ssh2Oct  1 12:57:43 rotator sshd\[622\]: Failed password for root from 92.62.139.103 port 40700 ssh2Oct  1 12:57:46 rotator sshd\[622\]: Failed password for root from 92.62.139.103 port 40700 ssh2Oct  1 12:57:48 rotator sshd\[622\]: Failed password for root from 92.62.139.103 port 40700 ssh2Oct  1 12:57:50 rotator sshd\[622\]: Failed password for root from 92.62.139.103 port 40700 ssh2
...

Attempt to attack host OS, exploiting network vulnerabilities, on 01-10-2019 04:45:14.

Oct  1 14:12:38 vps647732 sshd[22418]: Failed password for root from 182.61.148.116 port 49830 ssh2
...

$f2bV_matches

Attempt to attack host OS, exploiting network vulnerabilities, on 01-10-2019 04:45:13.