TCP (SYN) 27.66.72.56:59878 -> port 23, len 44

Oct  7 22:46:33 db sshd[21241]: User root from 157.97.80.205 not allowed because none of user's groups are listed in AllowGroups
...

detected by Fail2Ban

$f2bV_matches

Lines containing failures of 142.93.254.122
Oct  5 07:35:21 dns01 sshd[2030]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.254.122  user=r.r
Oct  5 07:35:23 dns01 sshd[2030]: Failed password for r.r from 142.93.254.122 port 53318 ssh2
Oct  5 07:35:23 dns01 sshd[2030]: Received disconnect from 142.93.254.122 port 53318:11: Bye Bye [preauth]
Oct  5 07:35:23 dns01 sshd[2030]: Disconnected from authenticating user r.r 142.93.254.122 port 53318 [preauth]
Oct  5 07:46:09 dns01 sshd[4012]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.254.122  user=r.r
Oct  5 07:46:11 dns01 sshd[4012]: Failed password for r.r from 142.93.254.122 port 41690 ssh2
Oct  5 07:46:11 dns01 sshd[4012]: Received disconnect from 142.93.254.122 port 41690:11: Bye Bye [preauth]
Oct  5 07:46:11 dns01 sshd[4012]: Disconnected from authenticating user r.r 142.93.254.122 port 41690 [preauth]
Oct  5 07:50:05 dns01........
------------------------------

Oct  7 20:40:21 localhost sshd[101788]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.231.103  user=root
Oct  7 20:40:23 localhost sshd[101788]: Failed password for root from 106.13.231.103 port 56326 ssh2
Oct  7 20:43:35 localhost sshd[102102]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.231.103  user=root
Oct  7 20:43:37 localhost sshd[102102]: Failed password for root from 106.13.231.103 port 41860 ssh2
Oct  7 20:46:36 localhost sshd[102379]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.231.103  user=root
Oct  7 20:46:38 localhost sshd[102379]: Failed password for root from 106.13.231.103 port 55618 ssh2
...

Oct  8 01:24:37 vps639187 sshd\[30778\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.0.246.2  user=root
Oct  8 01:24:40 vps639187 sshd\[30778\]: Failed password for root from 190.0.246.2 port 32944 ssh2
Oct  8 01:28:44 vps639187 sshd\[30828\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.0.246.2  user=root
...

Oct  7 22:30:19 ns382633 sshd\[29090\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.194.11.249  user=root
Oct  7 22:30:21 ns382633 sshd\[29090\]: Failed password for root from 69.194.11.249 port 46194 ssh2
Oct  7 22:39:40 ns382633 sshd\[30739\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.194.11.249  user=root
Oct  7 22:39:42 ns382633 sshd\[30739\]: Failed password for root from 69.194.11.249 port 60256 ssh2
Oct  7 22:47:40 ns382633 sshd\[31776\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.194.11.249  user=root

Oct  8 02:02:10 vps1 sshd[13325]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.248.76  user=root
Oct  8 02:02:12 vps1 sshd[13325]: Failed password for invalid user root from 122.51.248.76 port 40008 ssh2
Oct  8 02:03:35 vps1 sshd[13355]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.248.76  user=root
Oct  8 02:03:37 vps1 sshd[13355]: Failed password for invalid user root from 122.51.248.76 port 34290 ssh2
Oct  8 02:05:00 vps1 sshd[13405]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.248.76  user=root
Oct  8 02:05:02 vps1 sshd[13405]: Failed password for invalid user root from 122.51.248.76 port 56800 ssh2
...

Oct  8 02:42:31 sshgateway sshd\[11117\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.194.229.59  user=root
Oct  8 02:42:33 sshgateway sshd\[11117\]: Failed password for root from 122.194.229.59 port 5684 ssh2
Oct  8 02:42:46 sshgateway sshd\[11117\]: error: maximum authentication attempts exceeded for root from 122.194.229.59 port 5684 ssh2 \[preauth\]

Oct  7 22:25:40 ns382633 sshd\[28335\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=193.112.213.248  user=root
Oct  7 22:25:42 ns382633 sshd\[28335\]: Failed password for root from 193.112.213.248 port 47036 ssh2
Oct  7 22:42:58 ns382633 sshd\[31035\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=193.112.213.248  user=root
Oct  7 22:43:00 ns382633 sshd\[31035\]: Failed password for root from 193.112.213.248 port 36436 ssh2
Oct  7 22:47:31 ns382633 sshd\[31755\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=193.112.213.248  user=root

Icarus honeypot on github

2020-10-07T22:13:26.482121server.espacesoutien.com sshd[25142]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.203.172.159  user=root
2020-10-07T22:13:28.813902server.espacesoutien.com sshd[25142]: Failed password for root from 159.203.172.159 port 54560 ssh2
2020-10-07T22:16:39.198952server.espacesoutien.com sshd[29591]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.203.172.159  user=root
2020-10-07T22:16:41.022986server.espacesoutien.com sshd[29591]: Failed password for root from 159.203.172.159 port 60666 ssh2
...

Oct  8 00:48:46 s2 sshd[22068]: Failed password for root from 123.5.51.105 port 17896 ssh2
Oct  8 00:52:25 s2 sshd[22238]: Failed password for root from 123.5.51.105 port 7878 ssh2

Oct  7 17:36:08 ny01 sshd[2728]: Failed password for root from 125.215.207.44 port 39637 ssh2
Oct  7 17:40:01 ny01 sshd[3217]: Failed password for root from 125.215.207.44 port 42562 ssh2