An eye-opening walkthrough of the information that your browser provides to websites:
Server Logins
Proper practice using an ssh agent, especially when managing many keys or using a Bastion host to leapfrog into other instances!!! . Summarized:
# Add a key to your ssh-agent
$ ssh-add -K <keyname>.pem
# Type in any required passcodes and what-not
# Utilize your ssh-agent to log into a Bastion Account
$ ssh -A <user>@<bastion-IP>
# From this bation
[<user>@<bastion-IP>]$ ssh
