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[IDD #MWQ-760671]: Test Feed

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.

  • Subject: [IDD #MWQ-760671]: Test Feed
  • Date: Thu, 31 Dec 2015 08:18:22 -0700
Ziv,

> Hi Tom,
> 
> I cc'd Kyle, a systems administrator, to this email. He is helping me get
> through the firewall that has prevented my VM from being able to contact
> you.
> 
> Kyle wants to know:
> 
> What are the hosts (that my VM needs to contact)?

To *receive* data, your firewall must allow an outgoing IPv4 TCP connection 
from your computer to port 388 on idd.unidata.ucar.edu.

To *send* (i.e., relay) data to computers outside the University of Chicago, 
your firewall must allow incoming IPv4 TCP connections to port 388 on your 
computer.

> Does LDM use a library or utility that respects the proxy environmental
> variables?

No. Because protocols differ, proxies must be created on an 
application-by-application basis (there are proxies for web servers, for 
example). The LDM can be thought of as its own proxy -- but that still requires 
port 388 to be open (just as port 80 must be open for a proxy web server).

> Is there a config setting for LDM that can be directly given the proxy
> address?

No.

> I hope you'll be able to help us answer these questions. Thanks!

No worries.

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: MWQ-760671
Department: Support IDD
Priority: Normal
Status: Closed