Create Key-Pair by each user, so login with a common user on SSH Server Host and work like follows.

# create key-pair

debian@dlp:~$ssh-keygen

Generating public/private rsa key pair.
Enter file in which to save the key (/home/debian/.ssh/id_rsa): # Enter or input changes if you want
Created directory '/home/debian/.ssh'.
Enter passphrase (empty for no passphrase): # set passphrase (if set no passphrase, Enter with empty)
Enter same passphrase again:
Your identification has been saved in /home/debian/.ssh/id_rsa
Your public key has been saved in /home/debian/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:H+lFm+3c93VekrLiFCYAwoWDUVs43s4JEze8wr8QzG8 debian@dlp.srv.world
The key's randomart image is:
.....
.....

debian@dlp:~$ll ~/.ssh

total 8
-rw------- 1 debian debian 2655 Aug 17 13:48 id_rsa
-rw-r--r-- 1 debian debian 574 Aug 17 13:48 id_rsa.pub

debian@dlp:~$mv ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys

Transfer the private key created on the Server to a Client, then it’s possible to login with Key-Pair authentication. Below is an example to connect from a linux shell. Continue reading “SSH Key-Pair Authentication” »