Oct 14 22:27:48 meumeu sshd[1582]: Failed password for root from 222.186.173.154 port 53402 ssh2
Oct 14 22:28:08 meumeu sshd[1582]: error: maximum authentication attempts exceeded for root from 222.186.173.154 port 53402 ssh2 [preauth]
Oct 14 22:28:18 meumeu sshd[1658]: Failed password for root from 222.186.173.154 port 8744 ssh2
...

Oct 15 03:08:14 itv-usvr-02 sshd[14730]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.4  user=root
Oct 15 03:08:16 itv-usvr-02 sshd[14730]: Failed password for root from 222.186.42.4 port 58518 ssh2

web-1 [ssh] SSH Attack

Oct 14 20:22:55 venus sshd\[7890\]: Invalid user 1q2w3e4r5t from 94.179.145.173 port 42108
Oct 14 20:22:55 venus sshd\[7890\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.179.145.173
Oct 14 20:22:57 venus sshd\[7890\]: Failed password for invalid user 1q2w3e4r5t from 94.179.145.173 port 42108 ssh2
...

Oct 14 21:59:13 nextcloud sshd\[26900\]: Invalid user ftpuser from 222.252.25.241
Oct 14 21:59:13 nextcloud sshd\[26900\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.252.25.241
Oct 14 21:59:15 nextcloud sshd\[26900\]: Failed password for invalid user ftpuser from 222.252.25.241 port 16162 ssh2
...

Oct 14 15:59:28 web1 postfix/smtpd[24188]: warning: unknown[46.38.144.179]: SASL LOGIN authentication failed: authentication failure
...

Telnetd brute force attack detected by fail2ban

Oct 14 09:55:18 wbs sshd\[19754\]: Invalid user vps from 60.249.21.129
Oct 14 09:55:18 wbs sshd\[19754\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=60-249-21-129.hinet-ip.hinet.net
Oct 14 09:55:19 wbs sshd\[19754\]: Failed password for invalid user vps from 60.249.21.129 port 43696 ssh2
Oct 14 09:59:41 wbs sshd\[20102\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=60-249-21-129.hinet-ip.hinet.net  user=root
Oct 14 09:59:43 wbs sshd\[20102\]: Failed password for root from 60.249.21.129 port 56988 ssh2

Unauthorised access (Oct 14) SRC=195.175.11.18 LEN=52 TTL=110 ID=18704 DF TCP DPT=445 WINDOW=8192 SYN 
Unauthorised access (Oct 14) SRC=195.175.11.18 LEN=52 TTL=110 ID=11118 DF TCP DPT=445 WINDOW=8192 SYN

xmlrpc attack

Oct 14 20:17:23 localhost sshd\[89572\]: Invalid user user from 111.230.248.125 port 53258
Oct 14 20:17:23 localhost sshd\[89572\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.230.248.125
Oct 14 20:17:25 localhost sshd\[89572\]: Failed password for invalid user user from 111.230.248.125 port 53258 ssh2
Oct 14 20:21:53 localhost sshd\[89729\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.230.248.125  user=root
Oct 14 20:21:55 localhost sshd\[89729\]: Failed password for root from 111.230.248.125 port 37334 ssh2
...

Oct 14 21:59:09 MK-Soft-VM4 sshd[19326]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.231.215.20 
Oct 14 21:59:10 MK-Soft-VM4 sshd[19326]: Failed password for invalid user tomcat from 111.231.215.20 port 54670 ssh2
...

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Unauthorized IMAP connection attempt

F2B jail: sshd. Time: 2019-10-14 22:18:21, Reported by: VKReport