Configuring an SSH connection using a key is a secure way to connect to a remote system. It allows you to connect to the remote system without having to enter a password, making it more convenient and secure.

Here's how to configure an SSH connection using a key:

1. Generate a key pair on the client system:

ssh-keygen -t rsa

This will generate a public key and a private key. The public key will be stored in a file named id_rsa.pub, and the private key will be stored in a file named id_rsa. Keep the private key secure, as it is used to authenticate the client system.

1. Copy the public key to the remote system:

ssh-copy-id user@remote-system

This will copy the public key to the remote system and add it to the authorized_keys file in the .ssh directory of the user's home directory on the remote system.

1. Test the connection:

ssh user@remote-system

If the connection is successful, you should be logged in to the remote system without having to enter a password.

That's all there is to it! You should now be able to connect to the remote system using an SSH key for authentication.

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