Attempted connection to port 23.

Unauthorized connection attempt from IP address 178.234.143.243 on Port 445(SMB)

Apr  8 01:07:38 vmanager6029 sshd\[32746\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.238  user=root
Apr  8 01:07:40 vmanager6029 sshd\[32744\]: error: PAM: Authentication failure for root from 222.186.173.238
Apr  8 01:07:41 vmanager6029 sshd\[32747\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.238  user=root

2020-04-08T00:46:02.259522vps751288.ovh.net sshd\[3333\]: Invalid user user from 106.12.209.57 port 54964
2020-04-08T00:46:02.267258vps751288.ovh.net sshd\[3333\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.209.57
2020-04-08T00:46:04.407405vps751288.ovh.net sshd\[3333\]: Failed password for invalid user user from 106.12.209.57 port 54964 ssh2
2020-04-08T00:49:34.558808vps751288.ovh.net sshd\[3395\]: Invalid user maricaxx from 106.12.209.57 port 57862
2020-04-08T00:49:34.567449vps751288.ovh.net sshd\[3395\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.209.57

Apr  7 23:41:40 santamaria sshd\[2918\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.129.191.142  user=root
Apr  7 23:41:43 santamaria sshd\[2918\]: Failed password for root from 177.129.191.142 port 34079 ssh2
Apr  7 23:45:25 santamaria sshd\[2984\]: Invalid user admin from 177.129.191.142
Apr  7 23:45:25 santamaria sshd\[2984\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.129.191.142
...

Attempted connection to port 22.

Apr  8 00:41:52 server sshd[26425]: Failed password for root from 222.186.30.248 port 24959 ssh2
Apr  8 00:41:54 server sshd[26425]: Failed password for root from 222.186.30.248 port 24959 ssh2
Apr  8 00:41:57 server sshd[26425]: Failed password for root from 222.186.30.248 port 24959 ssh2

Apr  8 01:46:18 ift sshd\[27625\]: Failed password for root from 193.112.135.146 port 60170 ssh2Apr  8 01:49:21 ift sshd\[27806\]: Invalid user guest from 193.112.135.146Apr  8 01:49:23 ift sshd\[27806\]: Failed password for invalid user guest from 193.112.135.146 port 38040 ssh2Apr  8 01:52:28 ift sshd\[28365\]: Failed password for root from 193.112.135.146 port 44136 ssh2Apr  8 01:55:24 ift sshd\[29043\]: Invalid user centos from 193.112.135.146
...

Unauthorized connection attempt from IP address 211.23.244.116 on Port 445(SMB)

$f2bV_matches

(imapd) Failed IMAP login from 171.103.141.50 (TH/Thailand/171-103-141-50.static.asianet.co.th): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Apr  8 03:01:08 ir1 dovecot[566034]: imap-login: Disconnected (auth failed, 1 attempts in 5 secs): user=, method=PLAIN, rip=171.103.141.50, lip=5.63.12.44, TLS: Connection closed, session=<67dV8LqixYKrZ40y>

$f2bV_matches | Triggered by Fail2Ban at Vostok web server

2020-04-05 17:14:28 H=(warehousestorage.com) [183.253.29.111] F= rejected RCPT <…>: Rejected because 183.253.29.111 is in a black list at zen.spamhaus.org

Unauthorized connection attempt from IP address 195.206.55.154 on Port 445(SMB)

Apr  8 03:58:41 gw1 sshd[17187]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.45.204
Apr  8 03:58:42 gw1 sshd[17187]: Failed password for invalid user db2fenc3 from 104.248.45.204 port 52392 ssh2
...