Shard online status

[Demostenes]

Hello,

I have several questions regarding shard status here on website using internal POL webserver:

Do I need to have this on standard port (80), or I can use any?
Can I use https (via reverse proxy for example...)?
From which IP comes query (I would like to limit access to this ip only)?
Does this query have some domain name, so I can use reverse proxy to forward it into inner network?

Thanks.