May 31 10:42:05 debian-2gb-nbg1-2 kernel: \[13173301.968203\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=195.54.160.166 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=48042 PROTO=TCP SPT=55410 DPT=22666 WINDOW=1024 RES=0x00 SYN URGP=0

May 31 10:43:57 server sshd[24786]: Failed password for root from 94.180.58.238 port 49286 ssh2
May 31 10:47:32 server sshd[25080]: Failed password for root from 94.180.58.238 port 51730 ssh2
May 31 10:51:07 server sshd[25348]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.180.58.238
...

5x Failed Password

SIPVicious Scanner Detection

May 29 14:36:34 server6 sshd[24088]: reveeclipse mapping checking getaddrinfo for 179.183.144.119.dynamic.adsl.gvt.net.br [179.183.144.119] failed - POSSIBLE BREAK-IN ATTEMPT!
May 29 14:36:36 server6 sshd[24088]: Failed password for invalid user jfagan from 179.183.144.119 port 42994 ssh2
May 29 14:36:37 server6 sshd[24088]: Received disconnect from 179.183.144.119: 11: Bye Bye [preauth]
May 29 14:40:38 server6 sshd[27951]: reveeclipse mapping checking getaddrinfo for 179.183.144.119.dynamic.adsl.gvt.net.br [179.183.144.119] failed - POSSIBLE BREAK-IN ATTEMPT!
May 29 14:40:40 server6 sshd[27951]: Failed password for invalid user lynx from 179.183.144.119 port 40336 ssh2
May 29 14:40:40 server6 sshd[27951]: Received disconnect from 179.183.144.119: 11: Bye Bye [preauth]
May 29 14:43:35 server6 sshd[29936]: reveeclipse mapping checking getaddrinfo for 179.183.144.119.dynamic.adsl.gvt.net.br [179.183.144.119] failed - POSSIBLE BREAK-IN ATTEMPT!
May 29 14:43:35 server6 sshd........
-------------------------------

May 31 03:50:27 ip-172-31-61-156 sshd[26445]: Invalid user fahmed from 27.128.201.88
May 31 03:50:27 ip-172-31-61-156 sshd[26445]: Invalid user fahmed from 27.128.201.88
May 31 03:50:27 ip-172-31-61-156 sshd[26445]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.128.201.88
May 31 03:50:27 ip-172-31-61-156 sshd[26445]: Invalid user fahmed from 27.128.201.88
May 31 03:50:29 ip-172-31-61-156 sshd[26445]: Failed password for invalid user fahmed from 27.128.201.88 port 55753 ssh2
...

$f2bV_matches

Banned for previous contact form and other abuses from this ISP/VPN (403)

May 31 01:56:47 server1 sshd\[5419\]: Failed password for root from 180.151.56.114 port 51820 ssh2
May 31 01:57:28 server1 sshd\[8302\]: Invalid user peer from 180.151.56.114
May 31 01:57:28 server1 sshd\[8302\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.151.56.114 
May 31 01:57:30 server1 sshd\[8302\]: Failed password for invalid user peer from 180.151.56.114 port 60210 ssh2
May 31 01:58:14 server1 sshd\[10734\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.151.56.114  user=root
...

2020-05-31T08:12:53.330839abusebot-3.cloudsearch.cf sshd[11191]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=156.230.55.160  user=root
2020-05-31T08:12:54.660025abusebot-3.cloudsearch.cf sshd[11191]: Failed password for root from 156.230.55.160 port 45290 ssh2
2020-05-31T08:16:20.217912abusebot-3.cloudsearch.cf sshd[11420]: Invalid user lava from 156.230.55.160 port 46114
2020-05-31T08:16:20.224201abusebot-3.cloudsearch.cf sshd[11420]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=156.230.55.160
2020-05-31T08:16:20.217912abusebot-3.cloudsearch.cf sshd[11420]: Invalid user lava from 156.230.55.160 port 46114
2020-05-31T08:16:22.637117abusebot-3.cloudsearch.cf sshd[11420]: Failed password for invalid user lava from 156.230.55.160 port 46114 ssh2
2020-05-31T08:19:41.603323abusebot-3.cloudsearch.cf sshd[11631]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=156.230
...

 TCP (SYN) 183.249.121.170:26069 -> port 23, len 40

2020-05-3105:48:571jfEy0-00031G-TT\<=info@whatsup2013.chH=\(localhost\)[113.173.188.176]:44453P=esmtpsaX=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:info@whatsup2013.chS=3065id=2060d6858ea58f871b1ea804e397bda18af61d@whatsup2013.chT="tonandh862"fornandh862@gmail.commrevisholliday@gmail.commsbulldog70@yahoo.com2020-05-3105:49:341jfEyb-00033M-Jv\<=info@whatsup2013.chH=\(localhost\)[113.173.187.100]:59923P=esmtpsaX=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:info@whatsup2013.chS=3036id=a44467ded5fe2bd8fb05f3a0ab7f46eac9239e817c@whatsup2013.chT="tohartsvillejohn007"forhartsvillejohn007@gmail.comfernandezgustav91ww@gmail.comgucigangbang23@gmail.com2020-05-3105:49:191jfEyM-00032L-Ka\<=info@whatsup2013.chH=\(localhost\)[123.16.13.150]:46707P=esmtpsaX=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:info@whatsup2013.chS=2982id=005fe9bab19ab0b82421973bdca8829e69624f@whatsup2013.chT="tomeetrpatel02"formeetrpatel02@gmail.comadrian_nichols@bigpond.commccarthymichael952@gmail.c

187 packets to ports 3385 3386 3387 3388 3390 3391 3392 3393 3394 3396 3397 3398 3399 3400 3489 3888 3893 4000 4001 4010 4389 4444 4489 5000 5389 5555 6666 7777 8888 9000 9833 9999 13389 23389 33089 33389 33390 33789 33889 33890 33891 33892 33893 33895 33897, etc.

May 31 10:56:41 relay postfix/smtpd\[13144\]: warning: unknown\[185.143.74.251\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 31 10:57:03 relay postfix/smtpd\[30628\]: warning: unknown\[185.143.74.251\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 31 10:58:12 relay postfix/smtpd\[13828\]: warning: unknown\[185.143.74.251\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 31 10:58:31 relay postfix/smtpd\[31550\]: warning: unknown\[185.143.74.251\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 31 10:59:45 relay postfix/smtpd\[28576\]: warning: unknown\[185.143.74.251\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

firewall-block, port(s): 445/tcp