how to configure SSH key-based Authentication in Linux VPS or Dedicated Server

This article will guide how to configure SSH key-based Authentication in Linux VPS or Dedicated Server

In SSH Key-Based Authentication, all we do is generate public authentication key and copy the key over Linux VPS or dedicated server to connect without typing the password.

Below are the steps on how to execute SSH Key-Based Authentication in Linux VPS or dedicated server.

  1. Open the terminal of your local Linux machine.
  2. The first step is to create key-pair on the local machine.
    Enter the command ssh-keygen.
    Enter file in which to save the key (/home/andrew/.ssh/id_rsa): (Press “Enter”)

    01-create-key-pair-on-local-machine



  3. If the key was already present then you may see:
    Overwrite (y/n)? (press “y” and then enter)

    02-overwrite-the-key

  4. Then you should see the following output:
    Enter passphrase (empty for no passphrase): (press “Enter”)
    Enter same passphrase again: (press “Enter”)

    03-enter-passphrase



  5. To copy the key of your Linux server, enter the following syntax.
    ssh-copy-id (username)@(IP of your Linux VPS or dedicated server) -p (port no.).

    04-copy-the-key-of-your-server

  6. Then it will prompt for a password, Enter the VPS/Dedicated server’s password.
    It will copy the contents of your ~/.ssh/id_rsa.pub key into host server’s authorised_keys.

    05-enter-the-password

  7. The process is completed successfully, now you can SSH from the local machine to your VPS/dedicated server without typing the password.

    06-completed-successfully




Related Articles

On which platform Linux VPS are configured?

We configure Linux VPS on XEN virtualization technique. However, Linux Cloud VPS are configured...

How to change the timezone on Ubuntu 18.04 Server?

You can perform the below steps using root or sudo users. Check your current timezone by...

How to sync time using NTP in Ubuntu server?

Linux server users might have noticed that after adjusting the system clock to the correct time,...

How to take Backup of Exim Configuration from WHM?

EXIM comes with cPanel which is responsible for the email tranfer on the Linux server. Users can...

How to add user to sudo group in a Linux VPS?

With Sudo you can provide special privileges to any user or group. In Linux, there are few...

  • 0 Users Found This Useful

Was this answer helpful?