SSH and SSH Tunneling Explained (demonstrated with Puttygen and Putty)

Make a video with this using a QEMU rather than virtualbox

Is it mandatory to keep renewing the SSH certificate? Are there any risk of using old SSH certificate?

with this method, can I be able to share Internet connection through the ssh server from a remote or cloud computer?

I want to get high speed internet, which one do you recommend best ---- Can i Pay you for advice