Feb 24 22:29:11 kmh-mb-001 sshd[2474]: Invalid user testing from 134.209.154.207 port 34164
Feb 24 22:29:11 kmh-mb-001 sshd[2474]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.154.207
Feb 24 22:29:13 kmh-mb-001 sshd[2474]: Failed password for invalid user testing from 134.209.154.207 port 34164 ssh2
Feb 24 22:29:13 kmh-mb-001 sshd[2474]: Received disconnect from 134.209.154.207 port 34164:11: Bye Bye [preauth]
Feb 24 22:29:13 kmh-mb-001 sshd[2474]: Disconnected from 134.209.154.207 port 34164 [preauth]
Feb 24 22:44:22 kmh-mb-001 sshd[4577]: Invalid user james from 134.209.154.207 port 40198
Feb 24 22:44:22 kmh-mb-001 sshd[4577]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.154.207
Feb 24 22:44:24 kmh-mb-001 sshd[4577]: Failed password for invalid user james from 134.209.154.207 port 40198 ssh2
Feb 24 22:44:24 kmh-mb-001 sshd[4577]: Received disconnect from 134.209.154.2........
-------------------------------

Feb 24 14:08:11 tdfoods sshd\[3165\]: Invalid user golflife from 213.32.22.239
Feb 24 14:08:11 tdfoods sshd\[3165\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=239.ip-213-32-22.eu
Feb 24 14:08:13 tdfoods sshd\[3165\]: Failed password for invalid user golflife from 213.32.22.239 port 41852 ssh2
Feb 24 14:17:03 tdfoods sshd\[4061\]: Invalid user zabbix from 213.32.22.239
Feb 24 14:17:03 tdfoods sshd\[4061\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=239.ip-213-32-22.eu

suspicious action Mon, 24 Feb 2020 20:24:58 -0300

Port probing on unauthorized port 23

Feb 25 01:10:08 plex sshd[29430]: Invalid user steamcmd from 165.22.78.222 port 34034

Feb 25 00:24:53 ourumov-web sshd\[12892\]: Invalid user user from 217.182.68.93 port 34922
Feb 25 00:24:53 ourumov-web sshd\[12892\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=217.182.68.93
Feb 25 00:24:55 ourumov-web sshd\[12892\]: Failed password for invalid user user from 217.182.68.93 port 34922 ssh2
...

suspicious action Mon, 24 Feb 2020 20:24:20 -0300

Feb 25 00:24:45 ks10 sshd[566145]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.178.16.227 
Feb 25 00:24:46 ks10 sshd[566145]: Failed password for invalid user ashok from 51.178.16.227 port 58286 ssh2
...

suspicious action Mon, 24 Feb 2020 20:24:53 -0300

[2020-02-24 19:08:10] NOTICE[1148] chan_sip.c: Registration from '' failed for '77.247.110.88:50626' - Wrong password
[2020-02-24 19:08:10] SECURITY[1163] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-02-24T19:08:10.731-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="34566543",SessionID="0x7fd82cf77db8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.88/50626",Challenge="72684545",ReceivedChallenge="72684545",ReceivedHash="923dd04c9ea318ce6acb84d6b98b9f50"
[2020-02-24 19:08:10] NOTICE[1148] chan_sip.c: Registration from '' failed for '77.247.110.88:50624' - Wrong password
[2020-02-24 19:08:10] SECURITY[1163] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-02-24T19:08:10.732-0500",Severity="Error",Service="SIP",EventVersion="2",AccountID="34566543",SessionID="0x7fd82c9bc688",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.110.88/506
...

trying to access non-authorized port

1582586676 - 02/25/2020 00:24:36 Host: 2.194.4.188/2.194.4.188 Port: 445 TCP Blocked

2020-02-25T00:24:52.883693 X postfix/smtpd[5329]: lost connection after AUTH from unknown[183.47.138.109]
2020-02-25T00:24:53.773296 X postfix/smtpd[5999]: lost connection after AUTH from unknown[183.47.138.109]
2020-02-25T00:24:54.656406 X postfix/smtpd[5329]: lost connection after AUTH from unknown[183.47.138.109]

1582586658 - 02/25/2020 00:24:18 Host: 180.249.191.106/180.249.191.106 Port: 445 TCP Blocked

Honeypot attack, port: 5555, PTR: host26.181-90-252.telecom.net.ar.