Aug 27 04:22:08 mail.srvfarm.net postfix/smtpd[1314737]: warning: 81-219-94-125.ostmedia.pl[81.219.94.125]: SASL PLAIN authentication failed: 
Aug 27 04:22:08 mail.srvfarm.net postfix/smtpd[1314737]: lost connection after AUTH from 81-219-94-125.ostmedia.pl[81.219.94.125]
Aug 27 04:26:23 mail.srvfarm.net postfix/smtpd[1328470]: warning: 81-219-94-125.ostmedia.pl[81.219.94.125]: SASL PLAIN authentication failed: 
Aug 27 04:26:23 mail.srvfarm.net postfix/smtpd[1328470]: lost connection after AUTH from 81-219-94-125.ostmedia.pl[81.219.94.125]
Aug 27 04:29:24 mail.srvfarm.net postfix/smtpd[1328471]: warning: 81-219-94-125.ostmedia.pl[81.219.94.125]: SASL PLAIN authentication failed:

Sep 12 18:21:11 mail.srvfarm.net postfix/smtps/smtpd[547064]: warning: 81-219-94-38.ostmedia.pl[81.219.94.38]: SASL PLAIN authentication failed: 
Sep 12 18:21:11 mail.srvfarm.net postfix/smtps/smtpd[547064]: lost connection after AUTH from 81-219-94-38.ostmedia.pl[81.219.94.38]
Sep 12 18:25:32 mail.srvfarm.net postfix/smtpd[534020]: warning: 81-219-94-38.ostmedia.pl[81.219.94.38]: SASL PLAIN authentication failed: 
Sep 12 18:25:32 mail.srvfarm.net postfix/smtpd[534020]: lost connection after AUTH from 81-219-94-38.ostmedia.pl[81.219.94.38]
Sep 12 18:28:59 mail.srvfarm.net postfix/smtps/smtpd[548128]: warning: 81-219-94-38.ostmedia.pl[81.219.94.38]: SASL PLAIN authentication failed:

Sep 12 18:21:11 mail.srvfarm.net postfix/smtps/smtpd[547064]: warning: 81-219-94-38.ostmedia.pl[81.219.94.38]: SASL PLAIN authentication failed: 
Sep 12 18:21:11 mail.srvfarm.net postfix/smtps/smtpd[547064]: lost connection after AUTH from 81-219-94-38.ostmedia.pl[81.219.94.38]
Sep 12 18:25:32 mail.srvfarm.net postfix/smtpd[534020]: warning: 81-219-94-38.ostmedia.pl[81.219.94.38]: SASL PLAIN authentication failed: 
Sep 12 18:25:32 mail.srvfarm.net postfix/smtpd[534020]: lost connection after AUTH from 81-219-94-38.ostmedia.pl[81.219.94.38]
Sep 12 18:28:59 mail.srvfarm.net postfix/smtps/smtpd[548128]: warning: 81-219-94-38.ostmedia.pl[81.219.94.38]: SASL PLAIN authentication failed:

Sep 11 18:09:08 mail.srvfarm.net postfix/smtpd[3874760]: warning: 81-219-94-126.ostmedia.pl[81.219.94.126]: SASL PLAIN authentication failed: 
Sep 11 18:09:08 mail.srvfarm.net postfix/smtpd[3874760]: lost connection after AUTH from 81-219-94-126.ostmedia.pl[81.219.94.126]
Sep 11 18:13:20 mail.srvfarm.net postfix/smtpd[3890715]: warning: 81-219-94-126.ostmedia.pl[81.219.94.126]: SASL PLAIN authentication failed: 
Sep 11 18:13:20 mail.srvfarm.net postfix/smtpd[3890715]: lost connection after AUTH from 81-219-94-126.ostmedia.pl[81.219.94.126]
Sep 11 18:16:04 mail.srvfarm.net postfix/smtpd[3889545]: warning: 81-219-94-126.ostmedia.pl[81.219.94.126]: SASL PLAIN authentication failed:

Sep 11 18:09:08 mail.srvfarm.net postfix/smtpd[3874760]: warning: 81-219-94-126.ostmedia.pl[81.219.94.126]: SASL PLAIN authentication failed: 
Sep 11 18:09:08 mail.srvfarm.net postfix/smtpd[3874760]: lost connection after AUTH from 81-219-94-126.ostmedia.pl[81.219.94.126]
Sep 11 18:13:20 mail.srvfarm.net postfix/smtpd[3890715]: warning: 81-219-94-126.ostmedia.pl[81.219.94.126]: SASL PLAIN authentication failed: 
Sep 11 18:13:20 mail.srvfarm.net postfix/smtpd[3890715]: lost connection after AUTH from 81-219-94-126.ostmedia.pl[81.219.94.126]
Sep 11 18:16:04 mail.srvfarm.net postfix/smtpd[3889545]: warning: 81-219-94-126.ostmedia.pl[81.219.94.126]: SASL PLAIN authentication failed:

Unauthorized connection attempt from IP address 81.219.94.6 on Port 465(SMTPS)

Brute force attempt

Aug 27 22:52:00 mailman postfix/smtpd[32685]: warning: 81-219-94-162.ostmedia.pl[81.219.94.162]: SASL PLAIN authentication failed: authentication failure

Aug 27 04:54:38 mail.srvfarm.net postfix/smtpd[1334717]: warning: 81-219-94-200.ostmedia.pl[81.219.94.200]: SASL PLAIN authentication failed: 
Aug 27 04:54:38 mail.srvfarm.net postfix/smtpd[1334717]: lost connection after AUTH from 81-219-94-200.ostmedia.pl[81.219.94.200]
Aug 27 04:58:35 mail.srvfarm.net postfix/smtps/smtpd[1340640]: warning: 81-219-94-200.ostmedia.pl[81.219.94.200]: SASL PLAIN authentication failed: 
Aug 27 04:58:35 mail.srvfarm.net postfix/smtps/smtpd[1340640]: lost connection after AUTH from 81-219-94-200.ostmedia.pl[81.219.94.200]
Aug 27 05:01:31 mail.srvfarm.net postfix/smtpd[1334718]: warning: 81-219-94-200.ostmedia.pl[81.219.94.200]: SASL PLAIN authentication failed:

Unauthorized connection attempt from IP address 81.219.94.4 on Port 25(SMTP)

$f2bV_matches

"SMTP brute force auth login attempt."

Aug 14 23:42:31 mail.srvfarm.net postfix/smtpd[734604]: warning: 81-219-94-93.ostmedia.pl[81.219.94.93]: SASL PLAIN authentication failed: 
Aug 14 23:42:31 mail.srvfarm.net postfix/smtpd[734604]: lost connection after AUTH from 81-219-94-93.ostmedia.pl[81.219.94.93]
Aug 14 23:49:29 mail.srvfarm.net postfix/smtpd[738023]: warning: 81-219-94-93.ostmedia.pl[81.219.94.93]: SASL PLAIN authentication failed: 
Aug 14 23:49:29 mail.srvfarm.net postfix/smtpd[738023]: lost connection after AUTH from 81-219-94-93.ostmedia.pl[81.219.94.93]
Aug 14 23:50:25 mail.srvfarm.net postfix/smtps/smtpd[736704]: warning: 81-219-94-93.ostmedia.pl[81.219.94.93]: SASL PLAIN authentication failed:

Aug 10 05:06:47 mail.srvfarm.net postfix/smtps/smtpd[1310042]: warning: 81-219-94-141.ostmedia.pl[81.219.94.141]: SASL PLAIN authentication failed: 
Aug 10 05:06:47 mail.srvfarm.net postfix/smtps/smtpd[1310042]: lost connection after AUTH from 81-219-94-141.ostmedia.pl[81.219.94.141]
Aug 10 05:10:16 mail.srvfarm.net postfix/smtps/smtpd[1295936]: warning: 81-219-94-141.ostmedia.pl[81.219.94.141]: SASL PLAIN authentication failed: 
Aug 10 05:10:16 mail.srvfarm.net postfix/smtps/smtpd[1295936]: lost connection after AUTH from 81-219-94-141.ostmedia.pl[81.219.94.141]
Aug 10 05:12:20 mail.srvfarm.net postfix/smtpd[1310341]: warning: 81-219-94-141.ostmedia.pl[81.219.94.141]: SASL PLAIN authentication failed:

(smtpauth) Failed SMTP AUTH login from 81.219.94.116 (PL/Poland/81-219-94-116.ostmedia.pl): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-08-06 09:49:21 plain authenticator failed for 81-219-94-116.ostmedia.pl [81.219.94.116]: 535 Incorrect authentication data (set_id=info@partsafhe.com)

Jul 16 04:18:21 vps691689 sshd[20843]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.49.171
Jul 16 04:18:23 vps691689 sshd[20843]: Failed password for invalid user admin from 104.248.49.171 port 35578 ssh2
...

Jul 16 03:35:06 tux-35-217 sshd\[6359\]: Invalid user dian from 178.128.221.237 port 52146
Jul 16 03:35:06 tux-35-217 sshd\[6359\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.221.237
Jul 16 03:35:07 tux-35-217 sshd\[6359\]: Failed password for invalid user dian from 178.128.221.237 port 52146 ssh2
Jul 16 03:40:30 tux-35-217 sshd\[6374\]: Invalid user loop from 178.128.221.237 port 50206
Jul 16 03:40:30 tux-35-217 sshd\[6374\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.221.237
...

Jul 16 04:20:55 s64-1 sshd[9013]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.131.227.60
Jul 16 04:20:57 s64-1 sshd[9013]: Failed password for invalid user rich from 202.131.227.60 port 46266 ssh2
Jul 16 04:29:08 s64-1 sshd[9218]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.131.227.60
...

firewall-block, port(s): 8545/tcp

Jul 16 02:14:17 mail sshd\[23159\]: Invalid user demo from 182.71.127.252 port 58973
Jul 16 02:14:17 mail sshd\[23159\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.71.127.252
Jul 16 02:14:19 mail sshd\[23159\]: Failed password for invalid user demo from 182.71.127.252 port 58973 ssh2
Jul 16 02:20:09 mail sshd\[23248\]: Invalid user scanner from 182.71.127.252 port 58086
Jul 16 02:20:09 mail sshd\[23248\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.71.127.252
...

Trying ports that it shouldn't be.

TCP port 445 (SMB) attempt blocked by firewall. [2019-07-16 03:38:47]

Jul 16 04:24:01 s64-1 sshd[9110]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=43.241.234.27
Jul 16 04:24:03 s64-1 sshd[9110]: Failed password for invalid user test from 43.241.234.27 port 51412 ssh2
Jul 16 04:29:32 s64-1 sshd[9234]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=43.241.234.27
...

Restricted File Access Attempt
Matched phrase "wp-config.php" at REQUEST_FILENAME.

PHP Injection Attack: High-Risk PHP Function Name Found
Matched phrase "call_user_func" at ARGS:function.

Restricted File Access Attempt
Matched phrase "wp-config.php" at REQUEST_FILENAME.

PHP Injection Attack: High-Risk PHP Function Name Found
Matched phrase "call_user_func" at ARGS:function.

PHP Injection Attack: Serialized Object Injection
Pattern match "[oOcC]:\\d+:".+?":\\d+:{.*}" at REQUEST_HEADERS:X-Forwarded-For.

SQL Injection Attack Detected via libinjection
Matched Data: sUE1c found within REQUEST_HEADERS:Referer: 554fcae493e564ee0dc75bdf2ebf94caads|a:3:{s:2:\x22id\x22;s:3:\x22'/*\x22;s:3:\x22num\x22;s:141:\x22*/ union select 1,0x272F2A,3,4,5,6,7,8,0x7b247b24524345275d3b6469652f2a2a2f286d6435284449524543544f52595f534550415241544f5229293b2f2f7d7d,0--\x22;s:4:\x22name\x22;s:3:\x22ads\x22;}554fcae493e564ee0dc75bdf2ebf94ca

Jul 16 04:23:35 vps647732 sshd[28174]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=172.81.237.242
Jul 16 04:23:37 vps647732 sshd[28174]: Failed password for invalid user userftp from 172.81.237.242 port 47814 ssh2
...

16.07.2019 02:32:09 Connection to port 3390 blocked by firewall

Jul 16 03:57:10 SilenceServices sshd[18461]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.0.223
Jul 16 03:57:11 SilenceServices sshd[18461]: Failed password for invalid user user from 37.187.0.223 port 39706 ssh2
Jul 16 04:05:42 SilenceServices sshd[23811]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.0.223

\[2019-07-15 22:42:18\] SECURITY\[20812\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-15T22:42:18.519-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0024613054404227",SessionID="0x7f06f806ae98",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/57282",ACLName="no_extension_match"
\[2019-07-15 22:42:28\] SECURITY\[20812\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-15T22:42:28.426-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0024713054404227",SessionID="0x7f06f80b29f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/55718",ACLName="no_extension_match"
\[2019-07-15 22:42:38\] SECURITY\[20812\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-15T22:42:38.352-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0024813054404227",SessionID="0x7f06f8009f28",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/54375",ACLName="

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Subject: 最新版　95％OFF TV FREE CAS　2枚セット　95％OFF　
Date: Tue, 16 Jul 2019 02:31:06 +0400
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