Harden your Linux server using SSH keys

Improve server security by using SSH keys for authentication. This video shows you how to generate your own keys and add them to the server. Furthermore, it shows you how to go one step further and disable password authentication altogether to make your server and clients more secure.

## Slides

[matari_ganan]

i just recently started learning about using vnc server to remote into another computer and use its GUI. Learned about SSH tunneling and finally I just wanted to learn how to restrict SSH to just authentication with a key. Thanks so much for this video! 🙇‍♂

[saschadibbern]

Hi, I spend the best part of this summer working out the security procedures for a big financial institution to do regular SSH key replacement ... yes having the same key "forever" makes you a target in certain security scenarios. Financial regulators definitely do not like user keeping same keys indefinite - also password protected ones. So this PKA (public key authenticate) approach only works in "small" organization or infrastructures. If one has >50 users or computers the price of key-replacement explodes, so in bigger setup one should look for using SSH certificates and a SSH PKI instead .. and the regularly and automatically replace the private keys.