On: Advanced SSH Techniques

[yason]

I tried to figure out why he couldn't log to more than one machine using the same connection to martha?

ssh martha -> ssh waldo -> do stuff -> exit ssh othermachine -> do stuff -> exit exit

Port-forwarding surely works but did he explain the origins of this problem somewhere?

[kscaldef → yason]

He means simultaneously.

[yason → kscaldef]

So why not do everything at 'martha' shell prompt instead of his local shell prompt?

You only need some place where you can do for loops and spawn subsequent ssh connections -- 'martha' sounds like a good candidate for that.