Sep 25 12:59:12 our-server-hostname postfix/smtpd[12266]: connect from unknown[185.254.29.197]
Sep x@x
Sep x@x
Sep 25 12:59:40 our-server-hostname postfix/smtpd[12266]: 98BAFA400A3: client=unknown[185.254.29.197]
Sep 25 12:59:41 our-server-hostname postfix/smtpd[31253]: D4881A4008D: client=unknown[127.0.0.1], orig_client=unknown[185.254.29.197]
Sep 25 12:59:41 our-server-hostname amavis[32358]: (32358-01) Passed CLEAN, [185.254.29.197] [185.254.29.197] , mail_id: cJhBjbdNn63R, Hhostnames: -, size: 7787, queued_as: D4881A4008D, 141 ms
Sep x@x
Sep x@x
Sep 25 12:59:42 our-server-hostname postfix/smtpd[12266]: 245A6A400A3: client=unknown[185.254.29.197]
Sep 25 12:59:42 our-server-hostname postfix/smtpd[21350]: 965BCA400AA: client=unknown[127.0.0.1], orig_client=unknown[185.254.29.197]
Sep 25 12:59:42 our-server-hostname amavis[24235]: (24235-10) Passed CLEAN, [185.254.29.197] [185.254.29.197] , mail_id: VJCD+OXfvbLs, Hhostnames: -, size: 7730, queued_as: 965BCA400........
-------------------------------

Sep 25 06:55:54 venus sshd\[5899\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.204  user=root
Sep 25 06:55:56 venus sshd\[5899\]: Failed password for root from 218.92.0.204 port 19661 ssh2
Sep 25 06:55:58 venus sshd\[5899\]: Failed password for root from 218.92.0.204 port 19661 ssh2
...

Scanning and Vuln Attempts

v+ssh-bruteforce

Sep 24 20:55:48 tdfoods sshd\[7682\]: Invalid user acct from 51.255.44.56
Sep 24 20:55:48 tdfoods sshd\[7682\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=www.odass.org
Sep 24 20:55:50 tdfoods sshd\[7682\]: Failed password for invalid user acct from 51.255.44.56 port 55762 ssh2
Sep 24 20:59:45 tdfoods sshd\[8023\]: Invalid user test1 from 51.255.44.56
Sep 24 20:59:45 tdfoods sshd\[8023\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=www.odass.org

Sep 23 07:20:33 ACSRAD auth.info sshd[21951]: Invalid user kc from 125.45.90.28 port 39048
Sep 23 07:20:33 ACSRAD auth.info sshd[21951]: Failed password for invalid user kc from 125.45.90.28 port 39048 ssh2
Sep 23 07:20:34 ACSRAD auth.info sshd[21951]: Received disconnect from 125.45.90.28 port 39048:11: Bye Bye [preauth]
Sep 23 07:20:34 ACSRAD auth.info sshd[21951]: Disconnected from 125.45.90.28 port 39048 [preauth]
Sep 23 07:20:34 ACSRAD auth.notice sshguard[30767]: Attack from "125.45.90.28" on service 100 whostnameh danger 10.
Sep 23 07:20:34 ACSRAD auth.notice sshguard[30767]: Attack from "125.45.90.28" on service 100 whostnameh danger 10.
Sep 23 07:20:34 ACSRAD auth.notice sshguard[30767]: Attack from "125.45.90.28" on service 100 whostnameh danger 10.
Sep 23 07:20:34 ACSRAD auth.warn sshguard[30767]: Blocking "125.45.90.28/32" for 120 secs (3 attacks in 0 secs, after 1 abuses over 0 secs.)
Sep 23 07:25:13 ACSRAD auth.info sshd[24533]: Invalid user loverd from 125........
------------------------------

Sep 25 07:05:29 SilenceServices sshd[23475]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.90.250
Sep 25 07:05:31 SilenceServices sshd[23475]: Failed password for invalid user 1 from 106.12.90.250 port 49062 ssh2
Sep 25 07:08:41 SilenceServices sshd[24324]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.90.250

Scanning and Vuln Attempts

Sep 25 09:22:18 dedicated sshd[3717]: Invalid user openvpn_as from 200.196.249.170 port 44220

2019-09-25T03:01:36.6178011495-001 sshd\[34009\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=223.111.150.149  user=root
2019-09-25T03:01:38.8731451495-001 sshd\[34009\]: Failed password for root from 223.111.150.149 port 28685 ssh2
2019-09-25T03:01:41.1756141495-001 sshd\[34009\]: Failed password for root from 223.111.150.149 port 28685 ssh2
2019-09-25T03:01:47.6320941495-001 sshd\[34009\]: Failed password for root from 223.111.150.149 port 28685 ssh2
2019-09-25T03:01:47.6325291495-001 sshd\[34009\]: error: maximum authentication attempts exceeded for root from 223.111.150.149 port 28685 ssh2 \[preauth\]
2019-09-25T03:02:01.1210381495-001 sshd\[34027\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=223.111.150.149  user=root
...

09/24/2019-23:53:10.183821 51.79.128.154 Protocol: 6 ET SCAN NMAP -sS window 1024

Sep 25 08:52:39 dev0-dcfr-rnet sshd[3296]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.37.88
Sep 25 08:52:41 dev0-dcfr-rnet sshd[3296]: Failed password for invalid user password123 from 104.248.37.88 port 48642 ssh2
Sep 25 08:59:46 dev0-dcfr-rnet sshd[3307]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.37.88

Sep 25 06:50:21 xeon sshd[23195]: Failed password for invalid user intermec from 79.137.33.20 port 41927 ssh2

Sep 24 20:39:52 php1 sshd\[17954\]: Invalid user morrigan from 106.12.120.155
Sep 24 20:39:52 php1 sshd\[17954\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.120.155
Sep 24 20:39:54 php1 sshd\[17954\]: Failed password for invalid user morrigan from 106.12.120.155 port 58070 ssh2
Sep 24 20:45:20 php1 sshd\[18851\]: Invalid user webalizer from 106.12.120.155
Sep 24 20:45:20 php1 sshd\[18851\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.120.155

Sep 25 03:52:23 www_kotimaassa_fi sshd[32472]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.95.12.132
Sep 25 03:52:25 www_kotimaassa_fi sshd[32472]: Failed password for invalid user Varma from 103.95.12.132 port 51088 ssh2
...