Can Minepeon listen on a different port instead of :443 or :80 ? Can it be set up to first request credentials BEFORE it displays the MINEPEON splash page? We don't want any intruders knowing what they've come across do we? 
Also, what are the firewall settings out of the box?
Also, what are the firewall settings out of the box?
I'm not sure this is what you're considering, but I HIGHLY suggest that this not be directly connected to the internet. Ensure it's behind a firewall (on a private network).
Others have mentioned how to change the port and remove the splash page, but if you have concerns with your internal network, then you probably have much bigger things to worry about.