Oh gyus, lets make this clear: WebShield and Internet Mail provider both LISTEN on localhost. They OPEN their respective ports and they WAIT for connections on these ports from localhost. You might call it server rights, LOCALHOST server rights, Allow loopback communication or “whatever-your-favorite-junkie-monkie-firewall-software-likes-it-to-be-called”.

So these components act as servers on localhost. This so called server is accessible only from localhost so it is NOT ACCESSIBLE from the internet.