Learn how to configure SSH Passwordless Login Authentication. Our Server Management Support team is here to help you with your questions and concerns.

How to Configure SSH Passwordless Login Authentication

SSH helps us handle tasks like automated backups, file synchronization, as well as remote server access and management. Furthermore, SSH passwordless login can be described as an SSH authentication method that uses a pair of public and private keys for asymmetric encryption. The public key is kept on the server, and it allows only clients with the private key to connect.

While SSH offers several benefits, it comes with its own set of cons. For instance, credentials keys or passwords have to be destroyed when employees leave. Similarly, new ones have to be created as and when required. Furthermore, the credentials have to be rotated periodically.

Today, we are going to take a quick look at how to configure up SSH passwordless login to a Linux server.:

1. First, use ssh-keygen to generate a public and key pair.
2. Next, enter a filename for the key when prompted.
3. After that, we have to enter the passphrase when prompted and press enter. This passphrase helps secure the local key. At this point we can verify the SSH keys are generated by listing them with this command:

   $ ls ~/.ssh/id_*
4. Then, check if the .ssh directory already exists on the server we want to connect to. If not create one as seen below :

   mkdir -p .ssh
5. Next, copy the public key to the server with the ssh-copy-id command.
6. Finally, we have to enter the password when prompted, and we will be able to log in easily.

Our experts recommend backing up the private keys in a secure location.

If you run into any trouble while configuring SSH Passwordless Login Authentication, our experts are here to lend a hand.

[Need assistance with a different issue? Our team is available 24/7.]

Conclusion

In summary, our Support Techs demonstrated how to configure SSH Passwordless Login Authentication.