How to enable password based ssh authentication in ec2 instance

 

EC2 Linux SSH Authentication.

By default, preferred and default way of accessing any ec2 linux instance is key based authentication.

Here in this blog post, we will know 

• How to enable basic authentication that is password based authentication in ec2 instance.
• How to enable root login to ec2 instance.

I will keep on updating the post as per my learnings and used in practical scenarios.

Let's go through it :)

How to enable root login on linux ec2 instance.

• Login to ec2 linux instance using it's private key.
• Sudo to root
• change password for root
• Permit root login in sshd_config file

Syntax

 [ec2-user@ip-10-0-1-116 ~]$ sudo su

Change root password from below command.

 
  [root@ip-10-0-1-116 ec2-user]# passwd root

Permit root login by un-commenting the below line in sshd_config

 
  [root@ip-10-0-1-116 ec2-user]#  vi /etc/ssh/sshd_config

From

 
  # PermitRootLogin yes

To

 
  PermitRootLogin yes

How to enable password based authentication for ssh user.

• Login to ec2 linux instance using it's private key.
• Sudo to root
• Permit root login in sshd_config file
• Restart sshd service

Syntax

 [ec2-user@ip-10-0-1-116 ~]$ sudo su

Permit root login by un-commenting the below line in sshd_config

 
  [root@ip-10-0-1-116 ec2-user]#  vi /etc/ssh/sshd_config

From

 
  # PasswordAuthentication yes

To

 
  PasswordAuthentication yes

Restart SSHD service

 
  service sshd restart

Login and check !

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