[diroussel]

Back in 2004 I had an ssh terminal open from my Mac (12" PowerBook) to my home Linux server. I closed the lid and took the laptop away with for a trip. For some reason I didn't use the laptop during the week. When I got back home 6 days later I opened the laptop and saw the ssh session. I tried it out and it still worked! I was amazed!

The ssh client had no keep alive. And the sshd had no keep alive. There was not firewall and a long DHCP lease. So it all just worked.

But because of firewalls aggressivly closing xonnections, these days we tend to need keep alives and so I don't this this would work today.