Prevent SSH from disconnecting idle sessions
If you leave PuTTY connected for long periods of time on tail -f /some/log/file you may have noticed the SSH server disconnects you after a while if there is no new input on that log file.
You could configure PuTTY to enable connection keepalive functionality, but you’d need to either do that for every session or every saved server in the list. The easier way is to enable this functionality on the servers themselves…