We can easily do this using the ‘ssh-copy-id’ script. Next, we need to copy the newly created public key to our remote CentOS 7 VPS. Once the keypar is created on the local server, we have to copy the public key to the remote system that you want to access via SSH. This will create 2048 bit keypair in the /root/.ssh directory on the local server, as shown above. SHA256:FwWsYtA474WmEreIPiQnIG39nq7m90oPPvYXg5cjmb0 key's randomart image is: Your public key has been saved in /root/.ssh/id_rsa.pub. Your identification has been saved in /root/.ssh/id_rsa. Run the following command to create a keypair with rsa algorithm: ssh-keygen -t rsa Output: Generating public/private rsa key pair.Įnter file in which to save the key (/root/.ssh/id_rsa):Įnter passphrase (empty for no passphrase): Our recommendation is to set a strong passphrase. You will be also prompted to enter a passphrase for your private key or leave it empty. If there is no another key you can use the suggested location. You will be prompted to enter the location of the key. In case it is not installed, you can easily install OpenSSH yum -y install opensshįirst we will create SSH public and private key on the local server using the ssh-keygen tool provided by OpenSSH. You can check if it is installed with the following command ssh -V ![]() Make sure that OpenSSH is installed on both servers. – SSH root access to the VPS which comes by default with all our VPS hosting plans. – Two CentOS 7 servers (local and remote) with OpenSSH installed. In this tutorial we will configure SSH with public key authentication on CentOS 7 VPS, so instead of logging to your CentOS 7 VPS as usual using a username and password, you will be able to authenticate using a trusted SSH key which will increase the security of your server. SSH supports several authentication methods. SSH (Secure Socket Shell) is an open source, UNIX based, network protocol that provides users with a secure and encrypted way to login to remote computers, transfer files securely between the computers (SCP), command execution on remote servers, automate tasks between multiple servers on the network, and much more. ![]() We’ll show you, how to set up SSH Keys on CentOS 7.
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