This time you need to enter your RSA key passphrase to unlock the private key. ssh/authorized_keys file under the remote user’s home directory. This can be easily done with ssh-copy-id command, which is shipped with the openssh-clients package. Hint: The remote server can run any Linux distro: Debian, Ubuntu, RHEL, CentOS, whatever, as long as it runs OpenSSH server, you can use the following method. Step 2: Upload Your SSH Public Key to Remote Linux Server Run the ssh-keygen -t rsa -b 4096 command to create it again. If you see the “No such file or directory” error, that means the SSH keypair isn’t created. You should see the following output: /home/username/.ssh/id_rsa: OpenSSH private key ssh/id_rsa.pub file.įrom the randomart image we can see the length of the key ( RSA 4096). ssh/id_rsa file under your home directory. The private key (Don’t share it with anyone) will be saved in the.The passphrase is used to encrypt the private key. Next, enter a good passphrase at least 20 characters long. When asked which file to save the key, you can simply press Enter to use the default file. We use a 4096 bits key for stronger security. The above command generates an RSA type keypair. On your CentOS/RHEL desktop (not your server), enter the following command in a terminal window. Step 1: Generate SSH Public/Private Key Pair on CentOS/RHEL Desktop The latter is also known as passwordless SSH login because you don’t need to enter your password. There’re basically two ways of authenticating user login with OpenSSH server: password authentication and public key authentication. This tutorial explains how to set up SSH public key authentication on a CentOS/RHEL desktop.
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