Ubuntu系统root用户远程登录

Posted 2023-02-09

 通过CRT远程登录Ubuntu时遇到报错：

The client has disconnected from the server.  Reason:

Unable to authenticate using any of the configured authentication methods.  

Ubuntu初始登录只能是普通用户，想用root登录，需普通用户登录，然后切换为root用户，先设置root密码，再更改sshd_config文件

ixo@snort:~$ sudo su
Password: 
root@snort:/home/ixo#sudo passwd root
New password: 
Retype new password: 
passwd: password updated successfully
root@snort:/home/ivo# nano /etc/ssh/sshd_config

注意：是sshd_config，而不是ssh_config

...
#port 22
port 22
#PermitRootLogin prohibit-password
PermitRootLogin yes    # 允许root直接登录
...

保存后重启ssh服务

sudo service ssh restart