Aug  4 03:57:57 dhoomketu sshd[2134058]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.89  user=root
Aug  4 03:57:59 dhoomketu sshd[2134058]: Failed password for root from 112.85.42.89 port 39968 ssh2
Aug  4 03:57:57 dhoomketu sshd[2134058]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.89  user=root
Aug  4 03:57:59 dhoomketu sshd[2134058]: Failed password for root from 112.85.42.89 port 39968 ssh2
Aug  4 03:58:02 dhoomketu sshd[2134058]: Failed password for root from 112.85.42.89 port 39968 ssh2
...

Brute-force attempt banned

Aug  3 22:02:21 ms-srv sshd[51903]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.206.95.191  user=root
Aug  3 22:02:23 ms-srv sshd[51903]: Failed password for invalid user root from 185.206.95.191 port 45286 ssh2

Aug  4 00:16:06 abendstille sshd\[16508\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.95.150.143  user=root
Aug  4 00:16:08 abendstille sshd\[16508\]: Failed password for root from 85.95.150.143 port 54096 ssh2
Aug  4 00:18:12 abendstille sshd\[18743\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.95.150.143  user=root
Aug  4 00:18:14 abendstille sshd\[18743\]: Failed password for root from 85.95.150.143 port 58340 ssh2
Aug  4 00:20:18 abendstille sshd\[20901\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.95.150.143  user=root
...

" "

[2020-08-03 17:59:29] NOTICE[1248][C-00003810] chan_sip.c: Call from '' (77.247.109.88:63691) to extension '901146812400621' rejected because extension not found in context 'public'.
[2020-08-03 17:59:29] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-03T17:59:29.015-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="901146812400621",SessionID="0x7f2720178398",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.109.88/63691",ACLName="no_extension_match"
[2020-08-03 17:59:30] NOTICE[1248][C-00003811] chan_sip.c: Call from '' (77.247.109.88:52843) to extension '011970597396447' rejected because extension not found in context 'public'.
[2020-08-03 17:59:30] SECURITY[1275] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-08-03T17:59:30.855-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="011970597396447",SessionID="0x7f2720676e38",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/
...

2020-08-03T16:05:58.4938211495-001 sshd[38647]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.93.10.213  user=root
2020-08-03T16:06:00.5649681495-001 sshd[38647]: Failed password for root from 111.93.10.213 port 51816 ssh2
2020-08-03T16:10:22.8290391495-001 sshd[38855]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.93.10.213  user=root
2020-08-03T16:10:24.8098401495-001 sshd[38855]: Failed password for root from 111.93.10.213 port 35270 ssh2
2020-08-03T16:14:45.3410251495-001 sshd[39055]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.93.10.213  user=root
2020-08-03T16:14:47.4272821495-001 sshd[39055]: Failed password for root from 111.93.10.213 port 46950 ssh2
...

Aug  3 22:35:25 host sshd[31375]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.153.103.113  user=root
Aug  3 22:35:27 host sshd[31375]: Failed password for root from 178.153.103.113 port 39462 ssh2
...

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

Aug  3 22:32:46 pornomens sshd\[21264\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.50.2.4  user=root
Aug  3 22:32:48 pornomens sshd\[21264\]: Failed password for root from 101.50.2.4 port 48098 ssh2
Aug  3 22:35:34 pornomens sshd\[21282\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.50.2.4  user=root
...

Brute-Force

Aug  3 22:09:56 game-panel sshd[23086]: Failed password for root from 211.193.58.225 port 9442 ssh2
Aug  3 22:12:38 game-panel sshd[23204]: Failed password for root from 211.193.58.225 port 47193 ssh2

Aug  3 22:30:52 sshgateway sshd\[1875\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.82.194  user=root
Aug  3 22:30:54 sshgateway sshd\[1875\]: Failed password for root from 138.68.82.194 port 34182 ssh2
Aug  3 22:35:27 sshgateway sshd\[1950\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.82.194  user=root

Aug  3 22:48:28 PorscheCustomer sshd[11355]: Failed password for root from 143.208.135.240 port 41806 ssh2
Aug  3 22:52:57 PorscheCustomer sshd[11478]: Failed password for root from 143.208.135.240 port 55202 ssh2
...

\[Aug  4 08:02:30\] NOTICE\[31025\] chan_sip.c: Registration from '"444444" \' failed for '103.145.12.177:5765' - Wrong password
\[Aug  4 08:02:30\] NOTICE\[31025\] chan_sip.c: Registration from '"444444" \' failed for '103.145.12.177:5765' - Wrong password
\[Aug  4 08:02:30\] NOTICE\[31025\] chan_sip.c: Registration from '"444444" \' failed for '103.145.12.177:5765' - Wrong password
\[Aug  4 08:02:30\] NOTICE\[31025\] chan_sip.c: Registration from '"444444" \' failed for '103.145.12.177:5765' - Wrong password
\[Aug  4 08:02:30\] NOTICE\[31025\] chan_sip.c: Registration from '"444444" \' failed for '103.145.12.177:5765' - Wrong password
\[Aug  4 08:02:30\] NOTICE\[31025\] chan_sip.c: Registration from '"444444" \' failed for '103.145.12.177:5765' - Wrong password
\[Aug  4 08:02:30\] NOTICE\[31025\
...