generating public/private rsa key pair.Įnter a file in which to save the key (your_home/.ssh/id_rsa): You will be prompted to enter a file to save the key. By default, ssh-keygen will generate a 2048-bit RSA key pair which is secure enough but you can always pass a flag -b 4096 to generate a 4096-bit key. Once you press Enter the system will begin to generate ssh key pair. Open the terminal and run the command below: $ ssh-keygen The first thing to do to authenticate to a remote computer is to generate ssh key pair on your local computer.
#Ssh copy rsa key how to#
In this guide, we will be looking at how to set up ssh keys on Linux Mint 20. Note that the public key can be shared freely but the private key must be kept secured and never to be exposed to anyone. This is copied in the list of authorized keys in ~/.ssh/authorized-keys. In order to access a server with ssh keys, one must generate the encrypted key combination and copy the public key to the remote computer. With SSH keys, it makes it more difficult for a hacker to decrypt SSH keys. Hackers are always on the hunt to crack passwords and get access to people’s systems. Most people generally use user-password authentication to access remote servers but it is not recommended as it is less secure. Once an ssh connection is established, the commands typed on the local computer are sent and executed on the remote computer over an encrypted SSH tunnel. The default port can, however, be changed to enhance security. SSH listens on default port 22 and has to be enabled on the remote server.
How do ssh keys work?Īn ssh session is a client-server model, whereby the remote computer runs a service called ssh while local also runs ssh client. SSH give a more secure way of executing commands on remote Linux systems from the terminal as compared to using user-password authentication since it is encrypted and therefore is highly recommended for all users. While working with Linux based systems, one would spend a lot of time on the terminal. SSH (secure shell) is a more secure way of accessing remote Linux systems.
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