Sep 11 00:54:41 vps647732 sshd[26316]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=79.155.132.49
Sep 11 00:54:43 vps647732 sshd[26316]: Failed password for invalid user mcserver from 79.155.132.49 port 39252 ssh2
...

port 23 attempt blocked

Sep 11 02:23:16 www sshd\[231467\]: Invalid user admin from 81.183.253.86
Sep 11 02:23:16 www sshd\[231467\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.183.253.86
Sep 11 02:23:18 www sshd\[231467\]: Failed password for invalid user admin from 81.183.253.86 port 53581 ssh2
...

Sep 11 00:15:01 ncomp sshd[20223]: Invalid user christian from 140.246.207.140
Sep 11 00:15:01 ncomp sshd[20223]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.246.207.140
Sep 11 00:15:01 ncomp sshd[20223]: Invalid user christian from 140.246.207.140
Sep 11 00:15:03 ncomp sshd[20223]: Failed password for invalid user christian from 140.246.207.140 port 60570 ssh2

Sep 10 12:28:38 hpm sshd\[12291\]: Invalid user 123456 from 106.12.39.227
Sep 10 12:28:38 hpm sshd\[12291\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.39.227
Sep 10 12:28:40 hpm sshd\[12291\]: Failed password for invalid user 123456 from 106.12.39.227 port 41762 ssh2
Sep 10 12:33:09 hpm sshd\[12731\]: Invalid user znc-admin from 106.12.39.227
Sep 10 12:33:09 hpm sshd\[12731\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.39.227

Sep 11 00:15:11 ubuntu-2gb-nbg1-dc3-1 sshd[11663]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.145.31.68
Sep 11 00:15:14 ubuntu-2gb-nbg1-dc3-1 sshd[11663]: Failed password for invalid user git from 37.145.31.68 port 57974 ssh2
...

Sep 10 22:30:01 hb sshd\[25622\]: Invalid user uploader from 46.101.187.76
Sep 10 22:30:01 hb sshd\[25622\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ctrl.qa
Sep 10 22:30:03 hb sshd\[25622\]: Failed password for invalid user uploader from 46.101.187.76 port 35690 ssh2
Sep 10 22:35:00 hb sshd\[26121\]: Invalid user sinusbot from 46.101.187.76
Sep 10 22:35:00 hb sshd\[26121\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ctrl.qa

Sep 10 18:14:42 debian sshd\[29477\]: Invalid user scott from 220.92.16.82 port 46978
Sep 10 18:14:42 debian sshd\[29477\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=220.92.16.82
Sep 10 18:14:45 debian sshd\[29477\]: Failed password for invalid user scott from 220.92.16.82 port 46978 ssh2
...

2019-09-11T05:15:20.492943enmeeting.mahidol.ac.th sshd\[14521\]: Invalid user admin from 41.128.245.103 port 50242
2019-09-11T05:15:20.511054enmeeting.mahidol.ac.th sshd\[14521\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=41.128.245.103
2019-09-11T05:15:22.587215enmeeting.mahidol.ac.th sshd\[14521\]: Failed password for invalid user admin from 41.128.245.103 port 50242 ssh2
...

Fail2Ban Ban Triggered

\[2019-09-10 18:15:17\] NOTICE\[1827\] chan_sip.c: Registration from '"1009" \' failed for '77.247.110.216:6132' - Wrong password
\[2019-09-10 18:15:17\] SECURITY\[1849\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-09-10T18:15:17.476-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1009",SessionID="0x7fd9a80077d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.216/6132",Challenge="73695f36",ReceivedChallenge="73695f36",ReceivedHash="d595f358b2e5f0bd9da0dff44c230ad6"
\[2019-09-10 18:15:17\] NOTICE\[1827\] chan_sip.c: Registration from '"1009" \' failed for '77.247.110.216:6132' - Wrong password
\[2019-09-10 18:15:17\] SECURITY\[1849\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-09-10T18:15:17.570-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="1009",SessionID="0x7fd9a8a8c4f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4

Sep 10 13:07:41 aiointranet sshd\[5398\]: Invalid user teamspeak from 124.160.102.197
Sep 10 13:07:41 aiointranet sshd\[5398\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.160.102.197
Sep 10 13:07:43 aiointranet sshd\[5398\]: Failed password for invalid user teamspeak from 124.160.102.197 port 56478 ssh2
Sep 10 13:12:27 aiointranet sshd\[5829\]: Invalid user welcome from 124.160.102.197
Sep 10 13:12:27 aiointranet sshd\[5829\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.160.102.197

Sep 10 12:28:57 php1 sshd\[17416\]: Invalid user ftp from 150.242.99.190
Sep 10 12:28:57 php1 sshd\[17416\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=150.242.99.190
Sep 10 12:28:58 php1 sshd\[17416\]: Failed password for invalid user ftp from 150.242.99.190 port 52920 ssh2
Sep 10 12:35:45 php1 sshd\[18035\]: Invalid user teste from 150.242.99.190
Sep 10 12:35:45 php1 sshd\[18035\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=150.242.99.190

Sep 11 00:36:19 legacy sshd[24796]: Failed password for root from 1.52.166.239 port 30348 ssh2
Sep 11 00:37:01 legacy sshd[24836]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=1.52.166.239
Sep 11 00:37:03 legacy sshd[24836]: Failed password for invalid user user from 1.52.166.239 port 14666 ssh2
...

This IP address was blacklisted for the following reason:  /de/jobs/industriemechaniker-m-w/&%22%20or%20(1,2)=(select*from(select%20name_const(CHAR(111,78,69,75,117,76,116,86,103,101,104,75),1),name_const(CHAR(111,78,69,75,117,76,116,86,103,101,104,75),1))a)%20--%20%22x%22=%22x @ 2018-10-15T00:52:34+02:00.