2020-03-25T22:53:19.392435shield sshd\[15921\]: Invalid user oracle from 148.70.99.154 port 46083
2020-03-25T22:53:19.395754shield sshd\[15921\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154
2020-03-25T22:53:21.397012shield sshd\[15921\]: Failed password for invalid user oracle from 148.70.99.154 port 46083 ssh2
2020-03-25T22:59:09.408380shield sshd\[17159\]: Invalid user minta from 148.70.99.154 port 53622
2020-03-25T22:59:09.411628shield sshd\[17159\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154

Mar 24 05:24:51 ns3042688 sshd\[10158\]: Invalid user support from 148.70.99.154
Mar 24 05:24:51 ns3042688 sshd\[10158\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154 
Mar 24 05:24:53 ns3042688 sshd\[10158\]: Failed password for invalid user support from 148.70.99.154 port 35134 ssh2
Mar 24 05:30:00 ns3042688 sshd\[11162\]: Invalid user deploy from 148.70.99.154
Mar 24 05:30:00 ns3042688 sshd\[11162\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154 
...

Invalid user gameserver from 148.70.99.154 port 33027

Invalid user ftpuser1 from 148.70.99.154 port 55226

Mar 12 06:11:27 localhost sshd\[15385\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154  user=root
Mar 12 06:11:29 localhost sshd\[15385\]: Failed password for root from 148.70.99.154 port 57601 ssh2
Mar 12 06:19:47 localhost sshd\[17219\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154  user=root

Feb 29 23:01:52 tdfoods sshd\[3480\]: Invalid user kristofvps from 148.70.99.154
Feb 29 23:01:52 tdfoods sshd\[3480\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154
Feb 29 23:01:53 tdfoods sshd\[3480\]: Failed password for invalid user kristofvps from 148.70.99.154 port 52133 ssh2
Feb 29 23:09:32 tdfoods sshd\[4096\]: Invalid user javier from 148.70.99.154
Feb 29 23:09:32 tdfoods sshd\[4096\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154

Automatic report - SSH Brute-Force Attack

Jan  3 04:25:15 v22018076590370373 sshd[25134]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154 
...

Dec 22 01:02:59 h2177944 sshd\[32582\]: Invalid user opscode from 148.70.99.154 port 49489
Dec 22 01:03:00 h2177944 sshd\[32582\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154
Dec 22 01:03:02 h2177944 sshd\[32582\]: Failed password for invalid user opscode from 148.70.99.154 port 49489 ssh2
Dec 22 01:08:57 h2177944 sshd\[361\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154  user=root
...

2019-12-19T05:45:52.689854struts4.enskede.local sshd\[7655\]: Invalid user admin from 148.70.99.154 port 34960
2019-12-19T05:45:52.695708struts4.enskede.local sshd\[7655\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154
2019-12-19T05:45:54.970129struts4.enskede.local sshd\[7655\]: Failed password for invalid user admin from 148.70.99.154 port 34960 ssh2
2019-12-19T05:53:20.390282struts4.enskede.local sshd\[7670\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154  user=root
2019-12-19T05:53:23.417612struts4.enskede.local sshd\[7670\]: Failed password for root from 148.70.99.154 port 39083 ssh2
...

Dec 15 07:14:00 ns382633 sshd\[14205\]: Invalid user heidrich from 148.70.99.154 port 33336
Dec 15 07:14:00 ns382633 sshd\[14205\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154
Dec 15 07:14:02 ns382633 sshd\[14205\]: Failed password for invalid user heidrich from 148.70.99.154 port 33336 ssh2
Dec 15 07:30:04 ns382633 sshd\[16853\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154  user=root
Dec 15 07:30:06 ns382633 sshd\[16853\]: Failed password for root from 148.70.99.154 port 43952 ssh2

2019-12-10T07:40:15.397005abusebot-4.cloudsearch.cf sshd\[30103\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154  user=root

$f2bV_matches

Invalid user g04w4y from 148.70.99.154 port 60105
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154
Failed password for invalid user g04w4y from 148.70.99.154 port 60105 ssh2
Invalid user guarnera from 148.70.99.154 port 50156
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154

Nov 23 11:41:03 ny01 sshd[24431]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.99.154
Nov 23 11:41:05 ny01 sshd[24431]: Failed password for invalid user berwick from 148.70.99.154 port 58102 ssh2
Nov 23 11:47:11 ny01 sshd[24989]: Failed password for root from 148.70.99.154 port 48014 ssh2

Jun  7 10:37:15 inter-technics sshd[19681]: Invalid user admin from 93.157.62.102 port 60142
Jun  7 10:37:15 inter-technics sshd[19681]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.157.62.102
Jun  7 10:37:15 inter-technics sshd[19681]: Invalid user admin from 93.157.62.102 port 60142
Jun  7 10:37:17 inter-technics sshd[19681]: Failed password for invalid user admin from 93.157.62.102 port 60142 ssh2
Jun  7 10:37:29 inter-technics sshd[19693]: Invalid user admin from 93.157.62.102 port 54102
...

Bruteforce detected by fail2ban

$f2bV_matches

Fail2Ban Ban Triggered

Jun  7 05:27:36 icinga sshd[28915]: Failed password for root from 193.112.247.98 port 59596 ssh2
Jun  7 05:47:36 icinga sshd[61660]: Failed password for root from 193.112.247.98 port 49874 ssh2
...

Port probing on unauthorized port 23

[2020-06-07 03:57:41] NOTICE[1288] chan_sip.c: Registration from '' failed for '141.98.10.127:56819' - Wrong password
[2020-06-07 03:57:41] SECURITY[1303] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-07T03:57:41.268-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="Dallas",SessionID="0x7f4d742d3bb8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/141.98.10.127/56819",Challenge="6790716d",ReceivedChallenge="6790716d",ReceivedHash="e3f78eeb1d3c08c2fccb6c9da01b6178"
[2020-06-07 04:00:39] NOTICE[1288] chan_sip.c: Registration from '' failed for '141.98.10.127:61276' - Wrong password
[2020-06-07 04:00:39] SECURITY[1303] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-07T04:00:39.577-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="ezechiel",SessionID="0x7f4d745af848",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/1
...

Jun  7 05:44:36 vps687878 sshd\[17976\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.200.197.82  user=root
Jun  7 05:44:38 vps687878 sshd\[17976\]: Failed password for root from 111.200.197.82 port 3874 ssh2
Jun  7 05:48:13 vps687878 sshd\[18481\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.200.197.82  user=root
Jun  7 05:48:14 vps687878 sshd\[18481\]: Failed password for root from 111.200.197.82 port 3876 ssh2
Jun  7 05:51:27 vps687878 sshd\[18920\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.200.197.82  user=root
...

SSH Brute-Forcing (server2)

2020-06-07T08:38:38.952333mail.standpoint.com.ua sshd[25122]: Failed password for root from 123.56.14.2 port 46470 ssh2
2020-06-07T08:39:55.793719mail.standpoint.com.ua sshd[25273]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.56.14.2  user=root
2020-06-07T08:39:57.983248mail.standpoint.com.ua sshd[25273]: Failed password for root from 123.56.14.2 port 54360 ssh2
2020-06-07T08:41:14.883197mail.standpoint.com.ua sshd[25435]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.56.14.2  user=root
2020-06-07T08:41:16.585628mail.standpoint.com.ua sshd[25435]: Failed password for root from 123.56.14.2 port 34018 ssh2
...

Jun  7 13:34:09 web1 sshd[27520]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.153.46  user=root
Jun  7 13:34:11 web1 sshd[27520]: Failed password for root from 180.76.153.46 port 55984 ssh2
Jun  7 13:46:53 web1 sshd[30650]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.153.46  user=root
Jun  7 13:46:55 web1 sshd[30650]: Failed password for root from 180.76.153.46 port 36970 ssh2
Jun  7 13:48:36 web1 sshd[31065]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.153.46  user=root
Jun  7 13:48:39 web1 sshd[31065]: Failed password for root from 180.76.153.46 port 50260 ssh2
Jun  7 13:50:19 web1 sshd[31538]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.153.46  user=root
Jun  7 13:50:21 web1 sshd[31538]: Failed password for root from 180.76.153.46 port 35318 ssh2
Jun  7 13:52:01 web1 sshd[31908]: pa
...

Jun  7 06:58:55 eventyay sshd[7156]: Failed password for root from 106.124.139.161 port 39042 ssh2
Jun  7 07:03:44 eventyay sshd[7296]: Failed password for root from 106.124.139.161 port 38311 ssh2
...

Jun  7 04:13:52 NPSTNNYC01T sshd[29112]: Failed password for root from 61.177.172.128 port 49526 ssh2
Jun  7 04:14:05 NPSTNNYC01T sshd[29112]: error: maximum authentication attempts exceeded for root from 61.177.172.128 port 49526 ssh2 [preauth]
Jun  7 04:14:17 NPSTNNYC01T sshd[29128]: Failed password for root from 61.177.172.128 port 13626 ssh2
...

Jun  2 06:18:48 v11 sshd[22216]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.185.49  user=r.r
Jun  2 06:18:50 v11 sshd[22216]: Failed password for r.r from 182.61.185.49 port 47882 ssh2
Jun  2 06:18:50 v11 sshd[22216]: Received disconnect from 182.61.185.49 port 47882:11: Bye Bye [preauth]
Jun  2 06:18:50 v11 sshd[22216]: Disconnected from 182.61.185.49 port 47882 [preauth]
Jun  2 06:26:39 v11 sshd[22967]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.185.49  user=r.r
Jun  2 06:26:41 v11 sshd[22967]: Failed password for r.r from 182.61.185.49 port 39194 ssh2
Jun  2 06:26:41 v11 sshd[22967]: Received disconnect from 182.61.185.49 port 39194:11: Bye Bye [preauth]
Jun  2 06:26:41 v11 sshd[22967]: Disconnected from 182.61.185.49 port 39194 [preauth]
Jun  2 06:29:10 v11 sshd[23074]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.........
-------------------------------

2020-06-07T06:23:09.710740shield sshd\[24235\]: Invalid user zsxdcfvg\\r from 177.189.209.143 port 11201
2020-06-07T06:23:09.715128shield sshd\[24235\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.189.209.143
2020-06-07T06:23:11.683161shield sshd\[24235\]: Failed password for invalid user zsxdcfvg\\r from 177.189.209.143 port 11201 ssh2
2020-06-07T06:27:06.954231shield sshd\[26219\]: Invalid user 34erdfcv\\r from 177.189.209.143 port 13953
2020-06-07T06:27:06.958334shield sshd\[26219\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.189.209.143