Ell1,

It is impossible for users to open a port for LimeWire to connect to others with yet close their system to incoming Gnutella requests. When the ZoneAlarm user starts up LimeWire, they are asked if they want to allow LimeWire to act as a server or not (assuming they haven't already answered this question and clicked the box for remembering the answer). If the user does not allow LimeWire to run as a server then they will not be able to connect to any other peer. It is also impossible for two users to download/upload from/to each other if both are firewalled. For more information, see http://www.limewire.com/support/faq.htm . There is some good information on push requests and how LimeWire operates on a firewalled computer.