Setup the SSH server to use keys for authentication
The user creates a keypair, which consists of a private key, that can be protected with a passphrase, and a public key. The public key is transfered to the server and the private key is kept in our workstation. We assume that the user has accounts in both the server machine and his workstation. Everytime he tries to connect to the server, the keys are validated and the user is granted access.
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