Something that might be useful would be a way to configure ipython to not keep inactive notebook processes alive indefinitely. For example automatically shutdown the notebook whenever the client disconnects, or after being idle for n minutes.

Context: I would like to use ipython for teaching without setting up individual accounts, or on a public server. I am taking care of security on a lower level using a combination of rlimit and apparmor. If I could configure ipython to shutdown a process once the user disconnects, that makes a cool little sandbox that should be stable enough for teaching.