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May  4 22:36:34 ms-srv sshd[32823]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.107.133.162
May  4 22:36:36 ms-srv sshd[32823]: Failed password for invalid user mongodb from 117.107.133.162 port 5641 ssh2

Mar 31 05:48:47 debian-2gb-nbg1-2 kernel: \[7885581.531934\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=142.255.52.32 DST=195.201.40.59 LEN=44 TOS=0x00 PREC=0x00 TTL=49 ID=0 DF PROTO=TCP SPT=7547 DPT=62022 WINDOW=29200 RES=0x00 ACK SYN URGP=0

Mar 31 13:38:59 srv-ubuntu-dev3 sshd[46264]: Invalid user dev from 185.220.100.249
Mar 31 13:38:59 srv-ubuntu-dev3 sshd[46264]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.220.100.249
Mar 31 13:38:59 srv-ubuntu-dev3 sshd[46264]: Invalid user dev from 185.220.100.249
Mar 31 13:39:01 srv-ubuntu-dev3 sshd[46264]: Failed password for invalid user dev from 185.220.100.249 port 25586 ssh2
Mar 31 13:38:59 srv-ubuntu-dev3 sshd[46264]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.220.100.249
Mar 31 13:38:59 srv-ubuntu-dev3 sshd[46264]: Invalid user dev from 185.220.100.249
Mar 31 13:39:01 srv-ubuntu-dev3 sshd[46264]: Failed password for invalid user dev from 185.220.100.249 port 25586 ssh2
Mar 31 13:39:04 srv-ubuntu-dev3 sshd[46264]: Failed password for invalid user dev from 185.220.100.249 port 25586 ssh2
Mar 31 13:38:59 srv-ubuntu-dev3 sshd[46264]: pam_unix(sshd:auth): authentication failure; lognam
...

03/31/2020-07:45:19.158685 185.176.27.174 Protocol: 6 ET DROP Dshield Block Listed Source group 1

2020-03-31T11:58:13.494944rocketchat.forhosting.nl sshd[29255]: Failed password for root from 213.202.211.200 port 37964 ssh2
2020-03-31T12:02:04.466420rocketchat.forhosting.nl sshd[29335]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.202.211.200  user=root
2020-03-31T12:02:07.005352rocketchat.forhosting.nl sshd[29335]: Failed password for root from 213.202.211.200 port 50250 ssh2
...

Honeypot attack, port: 445, PTR: adsl.viettel.vn.

Unauthorized connection attempt detected from IP address 12.199.167.154 to port 5555

Automatic report - XMLRPC Attack

Triggered: repeated knocking on closed ports.

Mar 31 01:51:45 web9 sshd\[26117\]: Invalid user admin from 92.63.194.108
Mar 31 01:51:45 web9 sshd\[26117\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.63.194.108
Mar 31 01:51:47 web9 sshd\[26117\]: Failed password for invalid user admin from 92.63.194.108 port 35545 ssh2
Mar 31 01:52:04 web9 sshd\[26200\]: Invalid user admin from 92.63.194.108
Mar 31 01:52:04 web9 sshd\[26200\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.63.194.108

2020-03-31T13:21:20.643061centos sshd[20373]: Failed password for invalid user rx from 79.137.33.20 port 35231 ssh2
2020-03-31T13:31:13.878945centos sshd[21053]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=79.137.33.20  user=root
2020-03-31T13:31:15.411011centos sshd[21053]: Failed password for root from 79.137.33.20 port 50017 ssh2
...

xmlrpc attack

SSH invalid-user multiple login attempts

Mar 31 13:50:52 santamaria sshd\[29445\]: Invalid user cijo from 91.121.155.192
Mar 31 13:50:52 santamaria sshd\[29445\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.121.155.192
Mar 31 13:50:54 santamaria sshd\[29445\]: Failed password for invalid user cijo from 91.121.155.192 port 56941 ssh2
...

Mar 31 06:08:07 firewall sshd[7161]: Failed password for root from 51.15.136.91 port 54164 ssh2
Mar 31 06:11:49 firewall sshd[7291]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.15.136.91  user=root
Mar 31 06:11:51 firewall sshd[7291]: Failed password for root from 51.15.136.91 port 38074 ssh2
...