[whatever1]

Huh? Why I cannot just ssh from machine 2 to machine 1 and just type `tail`?

[ksdme9]

This is meant for cases when the machines are isolated, for example, when you attach to a remote container and want to download a file from it to your machine.

[philipwhiuk]

Isolated but still able to access (and SSH!) a random server on the internet?

New meaning of the word isolated

[ksdme9]

You don't have to interpret it in its strongest flavor. I meant more of inbound isolation when I said it.