Proxies

Client makes a request for domain.com.

Client checks nameservers to find the ip of domain.com

Client connects to our server on port 80 (our proxy server) and asks for bulbreminder.com

Our proxy server forwards that request to your private port.

Your private port is connected to your application/webserver (lighttpd? mongrel?)

That application server responds with data to the client.

Basically you start your application on your private port.

Our proxy server gets configured to response to a domain request by sending people to that port.