ssh root@43.251.183.142
The authenticity of host '43.251.183.142 (43.251.183.142)' can't be established.
ECDSA key fingerprint is SHA256:FeC6koP4VeUumw9g3tlqd3H4giZQCtyTrJ8KCXR4bMs.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '43.251.183.142' (ECDSA) to the list of known hosts.
root@43.251.183.142's password:
Welcome to Ubuntu 18.04 LTS (GNU/Linux 4.15.0-20-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.

root@tky:~#