One of the most annoying aspects of security is The password. Even more so every time the Linux console gently asks it a number of times. When this occurs once per minute, it gets annoying.
Those who are dealing with ssh sessions that need authentication, should know about a way to authenticate once and be safe for the rest of the day (provided no reboot occurs).
All of this goes under the name of ssh identity, namely, if we let ssh know who we are, it will stop asking for, well, who we are.
Here is how:
$ ssh-add /home/username/.ssh/id_rsa
Enter passphrase for /home/username/.ssh/id_rsa:
Identity added: /home/username/.ssh/id_rsa (/home/username/.ssh/id_rsa)