Disconnected: No supported authentication methods available (server sent: )

When using SSH Log in to ECS ECS （Elastic Compute Server） Linux Server time , Even if the password is entered correctly , The following error messages will also appear ：

• Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
• sshd[10826]: Connection closed by 192.168.0.1.
• Disconnected:No supported authentication methods available.

But the same user , adopt Management terminal Can log in normally .

Question why

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The problem is usually due to SSH Service modified PasswordAuthentication Parameters , Password authentication login disabled .

Treatment method

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To solve this problem , Please check and modify the following configuration ：

1. adopt Management terminal Entry system .
2. adopt cat Wait for instructions to see /etc/ssh/sshd_config Whether it contains configurations similar to the following ：

   PasswordAuthentication no
   #  explain ： This parameter is enabled by default , The default value is  yes.

3. If you need to modify the relevant policy configuration , It is recommended to back up the files before continuing .
4. Use vi Wait for the editor , Set the parameter value to yes, Or delete the whole or comment （ Add... At the beginning # Number ） Whole line configuration . such as ：

   # PasswordAuthentication no

5. Restart with the following command SSH service ：

   service sshd restart

6. Try logging in to the server again .