Restrict access to public and local network (no replies)

Hi,

This is a newbie question but when after selecting both the public and the local networks in the installation of wamp, I can't find where to restrict access to these networks. My understanding is that right now, since I have installed wamp anyone has access to my networks (at least the public one). Is there a sort of privacy settings parameters to "close" these networks (or Apache)?

Thanks for the help!!