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[IDD #TAK-151063]: Feedsite request -- lightning data

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  • Subject: [IDD #TAK-151063]: Feedsite request -- lightning data
  • Date: Fri, 05 Feb 2010 08:29:51 -0700
Hi Baird,

Quick follow-up to Jeff's reply to you yesterday...

I verified that there is forward and reverse DNS for your
machine (good).  Trying to see if an LDM was running
on your side did not meet with success, however.  This
failure either means that we can't contact an LDM on your
machine.  This could be caused by a firewall block
on inbound port 388 connections, or by the LDM not
running on your machine.

Questions:

- do you have an LDM installed on mm108-lang2.geo.brown.edu?

- if yes, is it running?

- if you have the LDM installed on your machine, please do the
  following to see if you can contact external machines:

<login as 'ldm'>
cd ~ldm
ldmping idd.unidata.ucar.edu

If your firewall is now configured to allow the outbound
LDM request (ldmping tests this), then your output should
look something like:

$ ldmping idd.unidata.ucar.edu
Feb 05 15:17:03 INFO:      State    Elapsed Port   Remote_Host           
rpc_stat
Feb 05 15:17:03 INFO: Resolving idd.unidata.ucar.edu to 128.117.140.3 took 
0.064351 seconds
Feb 05 15:17:03 INFO: RESPONDING   0.448270  388   idd.unidata.ucar.edu  

Any sort of error will mean that something is still not setup
correctly.  Please let us know the results of your test.

Review of what the LDM does:

- ~ldm/etc/ldmd.conf REQUEST lines result in an rpc.ldmd process
  being created when your LDM is started

- this rpc.ldmd tries to contact an upstream LDM (one that will feed
  you) via port 388 to ask for the data you are requesting in
  your REQUEST line

- port 388 is the port used on the upstream side, not on your machine.
  The port used on your machine is one randomly chosen by your
  machine's operating system

- we requested that the Brown firewall be configured to allow
  port 388 inbound access so that we can contact your LDM to
  see if it is running/running correctly.  We do this so that
  we can help troubleshoot any problems you may encounter.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: TAK-151063
Department: Support IDD
Priority: Normal
Status: Closed