Desde el equipo que queremos acceder al servidor sin clave ejecutamos lo siguiente: cliente1># ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: SHA256:9yTpBAOx5v+kmeQibaOq6YbwlcZQLoLk4eLgYySog8U root@localhost The key's randomart image is: +---[RSA 2048]----+ | o. | | o . o | |*..o o o | |B+E .o o . | |Xo + .. S = . | |== = . + + | |+o.o . o o . | |.o. . =o * | |=o...+ o= . | +----[SHA256]-----+ Editar /etc/hosts y agregar la ip del server1 192.168.100.1 server1 Por ultimo copiamos la llave al server 1 #cliente1>#ssh-copy-id -i /root/.ssh/id_rsa.pub server1 Digitamos la clave y listo. Si no cuentan con el comando ssh-copy-id haga cat al /