Virginia, Yes, ldmping(1) tries to connect to port 388 on the remote host -- so your firewall rules *must* allow outgoing TCP connections to that port. > Full Name: Virginia Galvin > Email Address: address@hidden > Organization: NOAA/NWS/TOC > Package Version: 5.10.1 > Operating System: Redhat 6.5 > Hardware: VM > Description of problem: we are not able to ldmping across FW > Does ldmping target port 388? > Do we need to allow portmapper traffic thru FW ? Regards, Steve Emmerson Ticket Details =================== Ticket ID: LIF-500875 Department: Support LDM Priority: Normal Status: Closed