This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Mark, > To: address@hidden > From: "Mark M. Ziemer" <address@hidden> > Subject: LDM - HPUX 10.20 - ldmping > Organization: UCAR/Unidata The above message contained the following: > Institution: NOAA NWS NCRFC > Package Version: 5.2.2 > Operating System: HPUX 10.20 > Hardware Information: HP 9000 J Class > Inquiry: While trying to troubleshoot transfer problems have found that > I an not able to ldmping all of the servers in network. > > I am able to ldmping some ldm servers on two different networks, but > not all. I have not checked all of the other servers, but the ones I > have can ldmping to me. I can traceroute to the firewalls for all ldm > servers. Your situation is consistent with a misconfigured firewall. A firewall between two LDM-s must not restrict packets whose source OR destination port is 388. Check with your network administrators to verify this condition. Regards, Steve Emmerson