Jul  6 05:32:35 xxxxxxx sshd[18113]: Address 14.184.218.219 maps to static.vnpt.vn, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Jul  6 05:32:37 xxxxxxx sshd[18113]: Failed password for invalid user user1 from 14.184.218.219 port 54685 ssh2
Jul  6 05:32:37 xxxxxxx sshd[18113]: Connection closed by 14.184.218.219 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=14.184.218.219

SSH/22 MH Probe, BF, Hack -

Jul  6 09:35:16 sshgateway sshd\[1870\]: Invalid user terri from 37.187.193.19
Jul  6 09:35:16 sshgateway sshd\[1870\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.193.19
Jul  6 09:35:18 sshgateway sshd\[1870\]: Failed password for invalid user terri from 37.187.193.19 port 54450 ssh2

\[2019-07-06 06:09:13\] NOTICE\[13443\] chan_sip.c: Registration from '"asd300300" \' failed for '185.40.4.23:5145' - Wrong password
\[2019-07-06 06:09:57\] NOTICE\[13443\] chan_sip.c: Registration from '"8002" \' failed for '185.40.4.23:5153' - Wrong password
\[2019-07-06 06:09:57\] SECURITY\[13451\] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2019-07-06T06:09:57.064-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="8002",SessionID="0x7f02f81c5a28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.40.4.23/5153",Challenge="563d92b1",ReceivedChallenge="563d92b1",ReceivedHash="448bf8b50a30b40694bafdf6ad5f5824"
...

ssh failed login

Automated report - ssh fail2ban:
Jul 6 10:59:12 authentication failure 
Jul 6 10:59:13 wrong password, user=123456, port=43428, ssh2
Jul 6 11:01:17 authentication failure

2019-07-06 08:06:56 dovecot_login authenticator failed for (User) [193.56.28.170]: 535 Incorrect authentication data (set_id=help@usmancity.ru)
...

Jul  6 07:11:28 ubuntu-2gb-nbg1-dc3-1 sshd[4555]: Failed password for root from 222.248.233.220 port 14005 ssh2
Jul  6 07:11:32 ubuntu-2gb-nbg1-dc3-1 sshd[4555]: error: maximum authentication attempts exceeded for root from 222.248.233.220 port 14005 ssh2 [preauth]
...

MultiHost/MultiPort Probe, Scan, Hack -

\[2019-07-06 05:55:18\] SECURITY\[13451\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-06T05:55:18.150-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9011441144630211",SessionID="0x7f02f8335788",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.53.88.45/59887",ACLName="no_extension_match"
\[2019-07-06 05:57:14\] SECURITY\[13451\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-06T05:57:14.004-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="011441144630211",SessionID="0x7f02f876b078",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.53.88.45/56133",ACLName="no_extension_match"
\[2019-07-06 05:59:09\] SECURITY\[13451\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-06T05:59:09.151-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9011441144630211",SessionID="0x7f02f8335788",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.53.88.45/53349",ACLName="no_e

failed_logins

Jul  6 09:12:02 Ubuntu-1404-trusty-64-minimal sshd\[29770\]: Invalid user libsys from 68.183.48.172
Jul  6 09:12:02 Ubuntu-1404-trusty-64-minimal sshd\[29770\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.48.172
Jul  6 09:12:04 Ubuntu-1404-trusty-64-minimal sshd\[29770\]: Failed password for invalid user libsys from 68.183.48.172 port 54156 ssh2
Jul  6 09:16:40 Ubuntu-1404-trusty-64-minimal sshd\[32666\]: Invalid user amministratore from 68.183.48.172
Jul  6 09:16:40 Ubuntu-1404-trusty-64-minimal sshd\[32666\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.48.172

2019-07-06T07:46:35.472957scmdmz1 sshd\[28826\]: Invalid user ubuntu from 183.101.8.161 port 53590
2019-07-06T07:46:35.475833scmdmz1 sshd\[28826\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.101.8.161
2019-07-06T07:46:37.389525scmdmz1 sshd\[28826\]: Failed password for invalid user ubuntu from 183.101.8.161 port 53590 ssh2
...

Jul  6 05:30:10 unicornsoft sshd\[29992\]: Invalid user nickelan from 112.35.46.21
Jul  6 05:30:10 unicornsoft sshd\[29992\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.35.46.21
Jul  6 05:30:12 unicornsoft sshd\[29992\]: Failed password for invalid user nickelan from 112.35.46.21 port 47068 ssh2

Jul  6 05:42:15 ns41 sshd[7652]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=201.161.58.229