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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Erik, In order for your LDM to receive data from beyond the firewall, the firewall must be configured to allow your LDM to initiate TCP connections to port 388 beyond the firewall. In order for LDM's beyond the firewall to received data from your LDM, the firewall must be configured to allow remote LDM's to initiate TCP connections to port 388 on your LDM's host. I hope this helps. > Hello - we have a configuration where our LDM server sits behind a hardware > firewall. The firewall is configured in a standard way such that stateful > requests are automatically allowed back in. > > In this setup, would we need to make a firewall entry in the hardware to > allow tcp 388? Does LDM make a request for data every time prior to > receiving data? > > My assumption is that we would need to make a firewall rule because part of > the installation instructions is to allow port 388 on the Linux OS level, > but please confirm. Regards, Steve Emmerson Ticket Details =================== Ticket ID: FID-470657 Department: Support LDM Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.