Mar  7 00:23:52 server sshd\[11984\]: Invalid user hyperic from 5.101.51.66
Mar  7 00:23:52 server sshd\[11984\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=katranlyubimec.ru 
Mar  7 00:23:53 server sshd\[11984\]: Failed password for invalid user hyperic from 5.101.51.66 port 55832 ssh2
Mar  7 01:02:21 server sshd\[20829\]: Invalid user s from 5.101.51.66
Mar  7 01:02:21 server sshd\[20829\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=katranlyubimec.ru 
...

SSH Brute Force

(sshd) Failed SSH login from 5.101.51.99 (RU/Russia/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Oct 10 12:16:20 server2 sshd[29565]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.99  user=cpanel
Oct 10 12:16:22 server2 sshd[29565]: Failed password for cpanel from 5.101.51.99 port 42732 ssh2
Oct 10 12:24:57 server2 sshd[31803]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.99  user=root
Oct 10 12:24:58 server2 sshd[31803]: Failed password for root from 5.101.51.99 port 39712 ssh2
Oct 10 12:28:30 server2 sshd[32394]: Invalid user vagrant from 5.101.51.99 port 43214

5.101.51.97 - - [01/Sep/2020:05:23:45 +0100] "POST /wp-login.php HTTP/1.1" 200 2369 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [01/Sep/2020:05:23:46 +0100] "POST /wp-login.php HTTP/1.1" 200 2341 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [01/Sep/2020:05:23:47 +0100] "POST /xmlrpc.php HTTP/1.1" 403 219 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...

5.101.51.97 - - [10/Aug/2020:14:08:17 +0200] "GET /wp-login.php HTTP/1.1" 200 1689 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [10/Aug/2020:14:08:17 +0200] "POST /wp-login.php HTTP/1.1" 200 1811 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [10/Aug/2020:14:08:18 +0200] "GET /wp-login.php HTTP/1.1" 200 1689 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [10/Aug/2020:14:08:18 +0200] "POST /wp-login.php HTTP/1.1" 200 1790 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [10/Aug/2020:14:08:19 +0200] "GET /wp-login.php HTTP/1.1" 200 1689 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [10/Aug/2020:14:08:19 +0200] "POST /wp-login.php HTTP/1.1" 200 1790 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...

WordPress wp-login brute force :: 5.101.51.97 0.108 - [09/Aug/2020:12:15:30  0000] [censored_1] "POST /wp-login.php HTTP/1.1" 200 1837 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0" "HTTP/1.1"

5.101.51.97 - - [07/Aug/2020:21:32:55 +0100] "POST /wp-login.php HTTP/1.1" 200 1949 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [07/Aug/2020:21:32:56 +0100] "POST /wp-login.php HTTP/1.1" 200 1924 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.101.51.97 - - [07/Aug/2020:21:32:57 +0100] "POST /xmlrpc.php HTTP/1.1" 200 247 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...

postfix (unknown user, SPF fail or relay access denied)

Lines containing failures of 5.101.51.165
Apr 27 00:00:19 mellenthin sshd[30244]: Invalid user terrence from 5.101.51.165 port 58860
Apr 27 00:00:19 mellenthin sshd[30244]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.165
Apr 27 00:00:20 mellenthin sshd[30244]: Failed password for invalid user terrence from 5.101.51.165 port 58860 ssh2
Apr 27 00:00:20 mellenthin sshd[30244]: Received disconnect from 5.101.51.165 port 58860:11: Bye Bye [preauth]
Apr 27 00:00:20 mellenthin sshd[30244]: Disconnected from invalid user terrence 5.101.51.165 port 58860 [preauth]
Apr 27 00:11:37 mellenthin sshd[30686]: User r.r from 5.101.51.165 not allowed because not listed in AllowUsers
Apr 27 00:11:37 mellenthin sshd[30686]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.165  user=r.r
Apr 27 00:11:39 mellenthin sshd[30686]: Failed password for invalid user r.r from 5.101.51.165 port 40328 s........
------------------------------

Invalid user hj from 5.101.51.71 port 55434

Mar 22 22:59:15 www_kotimaassa_fi sshd[3165]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.48
Mar 22 22:59:17 www_kotimaassa_fi sshd[3165]: Failed password for invalid user ray from 5.101.51.48 port 46466 ssh2
...

Mar 20 21:13:36 reverseproxy sshd[12155]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.45
Mar 20 21:13:38 reverseproxy sshd[12155]: Failed password for invalid user sam from 5.101.51.45 port 59832 ssh2

Mar 17 21:58:43 web9 sshd\[14771\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.45  user=root
Mar 17 21:58:45 web9 sshd\[14771\]: Failed password for root from 5.101.51.45 port 35216 ssh2
Mar 17 22:02:52 web9 sshd\[15421\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.45  user=root
Mar 17 22:02:54 web9 sshd\[15421\]: Failed password for root from 5.101.51.45 port 47274 ssh2
Mar 17 22:07:12 web9 sshd\[16059\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.45  user=root

Mar 11 03:28:21 ns382633 sshd\[8016\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.124  user=root
Mar 11 03:28:23 ns382633 sshd\[8016\]: Failed password for root from 5.101.51.124 port 40510 ssh2
Mar 11 03:34:33 ns382633 sshd\[8961\]: Invalid user svn from 5.101.51.124 port 39454
Mar 11 03:34:33 ns382633 sshd\[8961\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.124
Mar 11 03:34:34 ns382633 sshd\[8961\]: Failed password for invalid user svn from 5.101.51.124 port 39454 ssh2

fail2ban

Mar  6 22:37:17 mail1 sshd[7852]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.58  user=r.r
Mar  6 22:37:19 mail1 sshd[7852]: Failed password for r.r from 5.101.51.58 port 34538 ssh2
Mar  6 22:37:19 mail1 sshd[7852]: Received disconnect from 5.101.51.58 port 34538:11: Bye Bye [preauth]
Mar  6 22:37:19 mail1 sshd[7852]: Disconnected from 5.101.51.58 port 34538 [preauth]
Mar  6 23:00:50 mail1 sshd[9180]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.51.58  user=r.r


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=5.101.51.58

Dec 28 09:33:01 v22018076622670303 sshd\[28783\]: Invalid user daejeon from 76.233.226.105 port 47000
Dec 28 09:33:01 v22018076622670303 sshd\[28783\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=76.233.226.105
Dec 28 09:33:02 v22018076622670303 sshd\[28783\]: Failed password for invalid user daejeon from 76.233.226.105 port 47000 ssh2
...

Dec 28 09:36:22 raspberrypi sshd\[16886\]: Invalid user rampino from 116.213.144.93Dec 28 09:36:24 raspberrypi sshd\[16886\]: Failed password for invalid user rampino from 116.213.144.93 port 41397 ssh2Dec 28 09:49:40 raspberrypi sshd\[17129\]: Invalid user test from 116.213.144.93
...

Dec 28 08:22:50 zeus sshd[16166]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.192.138.149 
Dec 28 08:22:53 zeus sshd[16166]: Failed password for invalid user rwright from 85.192.138.149 port 37064 ssh2
Dec 28 08:25:44 zeus sshd[16265]: Failed password for root from 85.192.138.149 port 36012 ssh2

xmlrpc attack

Honeypot attack, port: 445, PTR: PTR record not found

Dec 28 07:21:21 legacy sshd[1414]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=151.80.46.40
Dec 28 07:21:23 legacy sshd[1414]: Failed password for invalid user reigles from 151.80.46.40 port 44344 ssh2
Dec 28 07:24:30 legacy sshd[1495]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=151.80.46.40
...

Honeypot attack, port: 23, PTR: PTR record not found

Dec 28 07:24:01  exim[31906]: [1\52] 1il5W4-0008Ic-Fa H=(driving.wpmarks.co) [81.28.107.40] F= rejected after DATA: This message scored 102.4 spam points.

Dec 28 12:00:44 vps691689 sshd[1512]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.227.130
Dec 28 12:00:46 vps691689 sshd[1512]: Failed password for invalid user cxkj_2008_888@#$ from 104.248.227.130 port 57914 ssh2
...

Dec 28 05:13:57 ldap01vmsma01 sshd[86775]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.126.165.170
Dec 28 05:14:00 ldap01vmsma01 sshd[86775]: Failed password for invalid user alric from 177.126.165.170 port 40672 ssh2
...

Dec 28 09:28:10 zeus sshd[18525]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.254.46.67 
Dec 28 09:28:13 zeus sshd[18525]: Failed password for invalid user abbacuccio from 27.254.46.67 port 43443 ssh2
Dec 28 09:36:47 zeus sshd[18759]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.254.46.67 
Dec 28 09:36:49 zeus sshd[18759]: Failed password for invalid user sadoyama from 27.254.46.67 port 58700 ssh2

Dec 28 07:24:04 MK-Soft-VM3 sshd[24743]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.48.20 
Dec 28 07:24:05 MK-Soft-VM3 sshd[24743]: Failed password for invalid user jazz_office from 106.13.48.20 port 37300 ssh2
...

Dec 28 08:39:48 site2 sshd\[24032\]: Invalid user give from 187.86.242.141Dec 28 08:39:50 site2 sshd\[24032\]: Failed password for invalid user give from 187.86.242.141 port 38110 ssh2Dec 28 08:41:48 site2 sshd\[24199\]: Failed password for backup from 187.86.242.141 port 42814 ssh2Dec 28 08:43:43 site2 sshd\[24243\]: Invalid user deasa from 187.86.242.141Dec 28 08:43:45 site2 sshd\[24243\]: Failed password for invalid user deasa from 187.86.242.141 port 46944 ssh2
...

Dec 28 15:13:19 webhost01 sshd[23495]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=80.14.253.7
Dec 28 15:13:21 webhost01 sshd[23495]: Failed password for invalid user lappa from 80.14.253.7 port 38024 ssh2
...

Honeypot attack, port: 23, PTR: net-31-27-149-45.cust.vodafonedsl.it.