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====== Ubuntu - SSH - Use SSH without a password ======

Configure SSH to use key-based authentication, which allows connecting to a remote server without entering a password.

This method uses a pair of cryptographic keys to authenticate to the SSH server, enhancing security.

----

===== Generate SSH keys =====

Generate SSH keys using:

<code bash>
ssh-keygen
</code>

<WRAP info>
**NOTE:**  This command creates a private key and a corresponding public key.

  * The private key is kept secret and secure by the user, while the public key can be shared with any SSH server you wish to connect to.
</WRAP>

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===== Copy the SSH public key to a remote server =====

Copy the SSH public key to a remote server using:

<code bash>
ssh-copy-id <username>@IP_address_of_the_server
</code>

<WRAP info>
**NOTE:**  This command appends the public key to the remote user **~/.ssh/authorized_keys** file, allowing key-based authentication.
</WRAP>

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