Closing a frozen SSH session

Normally, when I leave an SSH session idle too long and it freezes the terminal, I just close that tab and start a new one. I never bothered to look up what I could do to unfreeze it and continue. I recently came across this article which showed the 3 steps you need to follow to unfreeze your terminal in this situation. I’ve included the steps below so I can easily find it again in the future.

1. [enter]
2. ~
3. .