Time:     Sat Sep 12 04:24:08 2020 +0200
IP:       20.188.107.54 (SG/Singapore/-)
Failures: 5 (sshd)
Interval: 3600 seconds
Blocked:  Permanent Block [LF_SSHD]

Log entries:

Sep 12 04:21:15 ca-3-ams1 sshd[33520]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=20.188.107.54  user=root
Sep 12 04:21:16 ca-3-ams1 sshd[33520]: Failed password for root from 20.188.107.54 port 1024 ssh2
Sep 12 04:22:56 ca-3-ams1 sshd[33599]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=20.188.107.54  user=root
Sep 12 04:22:58 ca-3-ams1 sshd[33599]: Failed password for root from 20.188.107.54 port 1024 ssh2
Sep 12 04:24:06 ca-3-ams1 sshd[33634]: Invalid user admin from 20.188.107.54 port 1024

Sep 12 04:44:35 l02a sshd[29614]: Invalid user guest1 from 89.100.106.42
Sep 12 04:44:35 l02a sshd[29614]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.100.106.42 
Sep 12 04:44:35 l02a sshd[29614]: Invalid user guest1 from 89.100.106.42
Sep 12 04:44:37 l02a sshd[29614]: Failed password for invalid user guest1 from 89.100.106.42 port 53426 ssh2

20/9/11@13:29:15: FAIL: Alarm-Network address from=103.197.92.193
20/9/11@13:29:15: FAIL: Alarm-Network address from=103.197.92.193
...

Sep 11 22:26:22 sshgateway sshd\[23515\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.244.128.4  user=root
Sep 11 22:26:25 sshgateway sshd\[23515\]: Failed password for root from 118.244.128.4 port 23999 ssh2
Sep 11 22:28:15 sshgateway sshd\[23757\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.244.128.4  user=root

Invalid user ubuntu from 116.58.172.118 port 47783

2020-09-12T02:31:00.856477ks3355764 sshd[22999]: Invalid user david from 220.133.36.112 port 57674
2020-09-12T02:31:03.399144ks3355764 sshd[22999]: Failed password for invalid user david from 220.133.36.112 port 57674 ssh2
...

Unauthorised connection attempt detected at AUO MAIN. System is sshd. Protected by AUO Stack Web Application Firewall (WAF)

Invalid user samba from 222.92.116.40 port 19553

Sep 12 01:58:57 h1745522 sshd[16577]: Invalid user teresa from 91.232.4.149 port 58428
Sep 12 01:58:57 h1745522 sshd[16577]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.232.4.149
Sep 12 01:58:57 h1745522 sshd[16577]: Invalid user teresa from 91.232.4.149 port 58428
Sep 12 01:58:59 h1745522 sshd[16577]: Failed password for invalid user teresa from 91.232.4.149 port 58428 ssh2
Sep 12 02:00:31 h1745522 sshd[18605]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.232.4.149  user=root
Sep 12 02:00:33 h1745522 sshd[18605]: Failed password for root from 91.232.4.149 port 52142 ssh2
Sep 12 02:01:24 h1745522 sshd[18772]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.232.4.149  user=root
Sep 12 02:01:26 h1745522 sshd[18772]: Failed password for root from 91.232.4.149 port 38356 ssh2
Sep 12 02:02:18 h1745522 sshd[18894]: Invalid user test from 91.232.4.149 port 52
...

SSH Brute Force

Sep 12 05:00:34 santamaria sshd\[2091\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=145.239.78.59  user=root
Sep 12 05:00:36 santamaria sshd\[2091\]: Failed password for root from 145.239.78.59 port 55018 ssh2
Sep 12 05:04:31 santamaria sshd\[2149\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=145.239.78.59  user=root
...

Sep 12 07:11:27 root sshd[1113]: Failed password for root from 106.13.44.83 port 48102 ssh2
...

[2020-09-12 01:09:01] NOTICE[1239] chan_sip.c: Registration from '' failed for '185.108.106.251:62370' - Wrong password
[2020-09-12 01:09:01] SECURITY[1264] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-09-12T01:09:01.183-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="9417",SessionID="0x7f4d482e4338",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.108.106.251/62370",Challenge="247687f0",ReceivedChallenge="247687f0",ReceivedHash="e066c1c1eeec090a3c55d64a2bb26f7c"
[2020-09-12 01:14:54] NOTICE[1239] chan_sip.c: Registration from '' failed for '185.108.106.251:51849' - Wrong password
[2020-09-12 01:14:54] SECURITY[1264] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-09-12T01:14:54.577-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="366",SessionID="0x7f4d480d6c18",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.108.1
...

 TCP (SYN) 192.35.168.234:59120 -> port 12115, len 44

Sep 11 23:19:51 ws24vmsma01 sshd[22298]: Failed password for root from 106.54.253.41 port 44564 ssh2
...