Russ, In order to receive data-products from hosts outside your firewall, it *must* allow outgoing TCP connections to port 388. In order to send data-products to hosts outside your firewall, it *must* allow incoming TCP connections to port 388. This should be covered in the LDM documentation on pre-installation steps. See <http://www.unidata.ucar.edu/software/ldm/ldm-current/basics/preinstallation.html>. Regards, Steve Emmerson Ticket Details =================== Ticket ID: QEL-970387 Department: Support LDM Priority: Normal Status: Closed