如何使用密码而不是密钥对ubuntu？

Question

我启动了我的Amazon实例，并且正在使用.ppk密钥连接到ssh，我现在该如何禁用它并仅使用密码使用root用户访问权限？

Answer 1

Please try this way.

1. From an SSH client, log in to your EC2 instance.

Use one of the following user names:

For Amazon Linux, the user name is ec2-user.

For RHEL 5, the user name is either root or ec2-user.

For Ubuntu, the user name is ubuntu.

For SUSE Linux, the user name is either root or ec2-user.

If ec2-user or root doesn't work, check with your AMI provider.

2. Set a password for user. The example below uses ec2-user as the user:

$ sudo passwd ec2-user

Changing password for user ec2-user.

New password:

Retype new password:

For example, a successful response looks like this:

passwd: all authentication tokens updated successfully.

3. Update the PasswordAuthentication parameter in the /etc/ssh/sshd_config file: PasswordAuthentication yes

4. Restart the SSH service.

For Amazon Linux, RHEL 5, and SUSE Linux, use this command:

sudo service sshd restart

For Ubuntu, use this command:

sudo service ssh restart

5. Exit the SSH client, and then log in to test the password authentication.