Configure SSH key$-$based authentication

Many environments require the use of SSH key$-$based authentication rather than password$-$based logins$.$ Key$-$based authentication is both more secure and more convenient. You will configure SSH key$-$based authentication between two Linux systems.

Remain logged in as the root user on the CentOS $9$ Stream $($CLI$)-$ Applied Labs VM$.$

Use SSH to connect to the secondary server at $192\mathrm{.}168\mathrm{.}1\mathrm{.}101$ from centos.

Type yes and Passw$0$rd$!$ when prompted.

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Notice the command prompt indicates secondary$.$ Disconnect from secondary by using the exit command.

Generate the key pair. Do not create a corresponding password.

Select the Enter key three times through all options, accepting the defaults.

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Run the following command to copy your public key to the remote system $($secondary$).$

ssh$-$copy$-$id root@$192\mathrm{.}168\mathrm{.}1\mathrm{.}101$

Enter Passw$0$rd$!$ when challenged.

SSH to the secondary server from centos.

Were you challenged for a password?

Use the touch command to create a file named ssh on the secondary server.

Disconnect from secondary$.$

Confirm you created the ssh file on the secondary VM$.$