Ubuntu17 root ssh

Ubuntu provides OpenSSH (OpenBSD Secure Shell) in its universe repositories, which is a suite of security-related network-level utilities based on the SSH protocol.

1. To install it, open terminal (Ctrl+Alt+T) or log in Ubuntu server and run command:

sudo apt-get install openssh-server

2. After that, you should have SSH service enabled in your system, you may check its status by running command:

sudo service ssh status

3. You may change some settings (e.g., the listening port, and root login permission) by editing the configuration file via command:

sudo nano /etc/ssh/sshd_config

On Ubuntu desktop, you may use gedit instead of nano:  add this command in file

PermitRootLogin yes
StrictModes yes

Finally apply the changes by restarting or reloading SSH:

sudo service ssh restart

　　

以上内容完全盗版自：

http://ubuntuhandbook.org/index.php/2016/04/enable-ssh-ubuntu-16-04-lts/

在这里郑重的说一句，盗版要盗全套，哈哈哈~~~

由于不习惯使用非root用户，直接启用root账户方法：

1、修改root 密码：

sudo passwd root

输入两次root用户密码

2、创建 /etc/lightdm/lightdm.conf

vi /ect/lightdm/lightdm.conf

输入一下内容：

[SeatDefaults]
greeter-session=unity-greeter
user-session=ubuntu
greeter-show-manual-login=true

3、重启系统

4、用root登录桌面后，会弹出 读取/root/.profile时发现错误：mesg:ttyname failed:对设备不适当的ioctl操作 信息，解决办法：

将/root/.profile文件中的mesg n

替换成tty -s && mesg n

5、重启。

参考文章：

http://www.configserverfirewall.com/ubuntu-linux/enable-ubuntu-desktop-root-login/