Ubuntu Open allows root user to log in remotely

SSH server, you can access the remote server through the SSH protocol instead of Telnet and FTP. However, Ubuntu by default does not enable root and does not allow root remote logins. So you need to enable the root user first

1. Enable root User: sudo passwd root//password is enabled after it has been modified.

2. Install OpenSSH server:

Install OpenSSH server with apt command

$ sudo apt-get install Openssh-server

3. Configure OpenSSH Server

$ sudo vi/etc/ssh/sshd_config

Find Permitrootlogin no row, change to permitrootlogin Yes

4, restart OpenSSH server

$ sudo service ssh restart