gnome-user-share (apache) and open ports

[Santiago Erquicia]

The original idea of not having a firewall was that there were no open 
ports by default and if anyone wanted to install apache, for example, 
he/she had the necessary expertise to protect the system.

Now, with gnome-user-share, we are going to end up with apache installed 
(by default?) but usually this is going to be used by "normal people" 
without knowledge for protecting the system.

How is this going to done?

Santiago