I have a really strange situation.
I am conducting a summer camp in Russia. The twist is that we want to have internal net with SSL encryption, but we do not have access to global internet.
For now I am renewing my certificates couple days before the camp.
This is ok, but I have long fqdn-s, for which certificates are issued, and it would be convenient to shorten domain names to ***.something-non-existent-in-www
Is it possible?