====== Remote access and login ======

  * [[https://stackoverflow.com/questions/18035093/given-a-linux-username-and-a-password-how-can-i-test-if-it-is-a-valid-account|Given a linux username and a password how can I test if it is a valid account?]]
  * [[https://www.howtogeek.com/428413/what-is-reverse-ssh-tunneling-and-how-to-use-it/|What Is Reverse SSH Tunneling? (and How to Use It)]]