Use RSA Key for SSH Authentication

In this article I will describe how to access linux servers using ssh keys instead of using normal password authentication.

Login to local ssh terminal and generate ssh key with strong passphrase

# ssk-keygen -t rsa 2048

then copy the generated /root/.ssh/id_rsa.pub to the remote server (which you want to access using ssh keys) and then append its content to the file /root/.ssh/authorized_keys using the command

# cat id_rsa.pub >> /root/.ssh/authorized_keys

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