Aug 28 02:28:44 vmd17057 sshd[6717]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.89.57.110 
Aug 28 02:28:46 vmd17057 sshd[6717]: Failed password for invalid user debian from 51.89.57.110 port 44286 ssh2
...

Aug 28 00:48:26 rocket sshd[17787]: Failed password for root from 178.136.235.119 port 34818 ssh2
Aug 28 00:52:09 rocket sshd[18307]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.136.235.119
...

srvr2: (mod_security) mod_security (id:920350) triggered by 93.87.53.123 (RS/-/-): 1 in the last 600 secs; Ports: *; Direction: inout; Trigger: LF_MODSEC; Logs: 2020/08/27 23:06:05 [error] 244880#0: *105559 [client 93.87.53.123] ModSecurity: Access denied with code 406 (phase 2). Matched "Operator `Rx' with parameter `^[\d.:]+$' against variable `REQUEST_HEADERS:Host'  [redacted] [file "/etc/modsecurity.d/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "718"] [id "920350"] [rev ""] [msg "Host header is a numeric IP address"] [redacted] [severity "4"] [ver "OWASP_CRS/3.3.0"] [maturity "0"] [accuracy "0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "paranoia-level/1"] [tag "OWASP_CRS"] [tag "capec/1000/210/272"] [tag "PCI/6.5.10"] [redacted] [uri "/"] [unique_id "159856236551.106225"] [ref "o0,15v21,15"], client: 93.87.53.123, [redacted] request: "GET / HTTP/1.1" [redacted]

Ssh brute force

Aug 27 22:37:43 rocket sshd[30964]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.0.20
Aug 27 22:37:45 rocket sshd[30964]: Failed password for invalid user angelo from 37.187.0.20 port 38596 ssh2
Aug 27 22:44:01 rocket sshd[31930]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.0.20
...

Aug 27 04:44:04 mail.srvfarm.net postfix/smtps/smtpd[1335344]: warning: unknown[138.36.200.209]: SASL PLAIN authentication failed: 
Aug 27 04:44:05 mail.srvfarm.net postfix/smtps/smtpd[1335344]: lost connection after AUTH from unknown[138.36.200.209]
Aug 27 04:46:35 mail.srvfarm.net postfix/smtpd[1334722]: warning: unknown[138.36.200.209]: SASL PLAIN authentication failed: 
Aug 27 04:46:35 mail.srvfarm.net postfix/smtpd[1334722]: lost connection after AUTH from unknown[138.36.200.209]
Aug 27 04:47:26 mail.srvfarm.net postfix/smtps/smtpd[1331222]: warning: unknown[138.36.200.209]: SASL PLAIN authentication failed:

2020-08-27T21:50:47.844999shield sshd\[31014\]: Invalid user test from 118.244.195.141 port 43905
2020-08-27T21:50:47.853116shield sshd\[31014\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.244.195.141
2020-08-27T21:50:49.791827shield sshd\[31014\]: Failed password for invalid user test from 118.244.195.141 port 43905 ssh2
2020-08-27T21:54:36.490095shield sshd\[31986\]: Invalid user poseidon from 118.244.195.141 port 28006
2020-08-27T21:54:36.583190shield sshd\[31986\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.244.195.141

Aug 27 04:50:16 mail.srvfarm.net postfix/smtpd[1334718]: warning: unknown[45.169.17.89]: SASL PLAIN authentication failed: 
Aug 27 04:50:17 mail.srvfarm.net postfix/smtpd[1334718]: lost connection after AUTH from unknown[45.169.17.89]
Aug 27 04:53:24 mail.srvfarm.net postfix/smtpd[1334720]: warning: unknown[45.169.17.89]: SASL PLAIN authentication failed: 
Aug 27 04:53:25 mail.srvfarm.net postfix/smtpd[1334720]: lost connection after AUTH from unknown[45.169.17.89]
Aug 27 04:55:10 mail.srvfarm.net postfix/smtps/smtpd[1339209]: warning: unknown[45.169.17.89]: SASL PLAIN authentication failed:

Aug 28 02:04:07 rocket sshd[28322]: Failed password for root from 222.186.30.112 port 46215 ssh2
Aug 28 02:04:09 rocket sshd[28322]: Failed password for root from 222.186.30.112 port 46215 ssh2
Aug 28 02:04:10 rocket sshd[28322]: Failed password for root from 222.186.30.112 port 46215 ssh2
...

Aug 27 04:33:40 mail.srvfarm.net postfix/smtpd[1334718]: warning: unknown[187.63.34.60]: SASL PLAIN authentication failed: 
Aug 27 04:33:41 mail.srvfarm.net postfix/smtpd[1334718]: lost connection after AUTH from unknown[187.63.34.60]
Aug 27 04:37:41 mail.srvfarm.net postfix/smtpd[1336013]: warning: unknown[187.63.34.60]: SASL PLAIN authentication failed: 
Aug 27 04:37:42 mail.srvfarm.net postfix/smtpd[1336013]: lost connection after AUTH from unknown[187.63.34.60]
Aug 27 04:43:15 mail.srvfarm.net postfix/smtps/smtpd[1331136]: warning: unknown[187.63.34.60]: SASL PLAIN authentication failed:

Aug 27 04:36:24 mail.srvfarm.net postfix/smtpd[1334717]: warning: unknown[196.0.111.38]: SASL PLAIN authentication failed: 
Aug 27 04:36:24 mail.srvfarm.net postfix/smtpd[1334717]: lost connection after AUTH from unknown[196.0.111.38]
Aug 27 04:38:04 mail.srvfarm.net postfix/smtps/smtpd[1335346]: warning: unknown[196.0.111.38]: SASL PLAIN authentication failed: 
Aug 27 04:38:04 mail.srvfarm.net postfix/smtps/smtpd[1335346]: lost connection after AUTH from unknown[196.0.111.38]
Aug 27 04:38:44 mail.srvfarm.net postfix/smtpd[1333802]: warning: unknown[196.0.111.38]: SASL PLAIN authentication failed:

Aug 27 23:06:25 server postfix/smtpd[10974]: NOQUEUE: reject: RCPT from unknown[177.81.22.247]: 554 5.7.1 Service unavailable; Client host [177.81.22.247] blocked using zen.spamhaus.org; https://www.spamhaus.org/query/ip/177.81.22.247; from= to= proto=ESMTP helo=

Aug 27 04:46:22 mail.srvfarm.net postfix/smtps/smtpd[1331136]: warning: unknown[45.160.136.107]: SASL PLAIN authentication failed: 
Aug 27 04:46:23 mail.srvfarm.net postfix/smtps/smtpd[1331136]: lost connection after AUTH from unknown[45.160.136.107]
Aug 27 04:49:12 mail.srvfarm.net postfix/smtpd[1334724]: warning: unknown[45.160.136.107]: SASL PLAIN authentication failed: 
Aug 27 04:49:13 mail.srvfarm.net postfix/smtpd[1334724]: lost connection after AUTH from unknown[45.160.136.107]
Aug 27 04:51:20 mail.srvfarm.net postfix/smtps/smtpd[1335345]: warning: unknown[45.160.136.107]: SASL PLAIN authentication failed:

$f2bV_matches

Ssh brute force