Step 1: Create Authentication SSH-Keygen Keys on the originating machine.
$ ssh-keygen -t rsa
On Windows you could use puttygen.exe
Use a passphrase to protect keys.
On Linux private key goes to .ssh/id_rsa
Public key goes to id_rsa.pub
Step 2: Create .ssh Directory on the destination machine.
Step 3: Upload Generated Public Keys to the destination machine.
$ cat .ssh/id_rsa.pub | ssh <username>@<destination_ip> 'cat >> .ssh/authorized_keys'
<username> should be the login on the destination machine.
<destination_ip> is the public IP of the destination machine.
Step 4: Set Permissions on the destination machine.
$ ssh <username>@<destination_ip> "chmod 700 .ssh; chmod 640 .ssh/authorized_keys"
<username> should be the login on the destination machine.
<destination_ip> is the public IP of the destination machine.
Step 5: Login from originating machine to destination machine without password.
$ ssh <username>@<destination_ip>
<username> should be the login on the destination machine.
<destination_ip> is the public IP of the destination machine.
On Windows you could use putty.exe
Taken from https://www.tecmint.com/ssh-passwordless-login-using-ssh-keygen-in-5-easy-steps/
Saturday, July 3, 2021
SSH Passwordless Login Using SSH Keygen in 5 Easy Steps.
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