You now have a public and private key that you can use to authenticate. Your identification has been saved in /your_home/.ssh/id_rsa. You should then see the following output: A passphrase adds an additional layer of security to prevent unauthorized users from logging in. Here you optionally may enter a secure passphrase, which is highly recommended.

You should then see the following prompt:Įnter passphrase (empty for no passphrase): Be very careful when selecting yes, as this is a destructive process that cannot be reversed. If you choose to overwrite the key on disk, you will not be able to authenticate using the previous key anymore. home/your_home/.ssh/id_rsa already exists. If you had previously generated an SSH key pair, you may see the following prompt: ssh/ subdirectory in your home directory, or specify an alternate path. Press ENTER to save the key pair into the. The first step is to create a key pair on the client machine (usually your computer): ssh-keygenīy default, ssh-keygen will create a 2048-bit RSA key pair, which is secure enough for most use cases (you may optionally pass in the -b 4096 flag to create a larger 4096-bit key).Īfter entering the command, you should see the following prompt:Įnter file in which to save the key (/your_home/.ssh/id_rsa): SSH keys provide a straightforward, secure way of logging into your server and are recommended for all users. In this guide, we'll focus on setting up SSH keys for a vanilla CentOS 7 installation. When working with a CentOS server, chances are, you will spend most of your time in a terminal session connected to your server through SSH. Secure shell, or SSH, is an encrypted protocol used to administer and communicate with servers.

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