[LDM #DEO-146112]: Qustion on LDM

Hi Wei,

re:
> The IP address that your LDM would see for our LDM should be 164.165.173.77

After doing a Google (tm) search for 'deq.idaho.gov' yesterday, I found that
the (your?) web server is www.deq.idaho.gov.  I did an 'nslookup' on that
name, and I found out that its IP address is 164.165.173.3.  Assuming that
the machine on which you are attempting to run the LDM would be in the same
subnet (164.165), I did a search of yesterday's LDM log files on all of the
real-server backends of our IDD relay clusters looking for any indication
that your machine had attempted a connection, and was being denied.  Because
of this negative result, I, and others in Unidata, were left assuming that
the external IP address of your LDM machine would be in a different subnet.

Request:

Please setup the following 'notifyme' invocation and leave it running so
we can verify/refute whether or not your LDM is actually able to contact
our IDD relay:

<as the user running the LDM on your AWIPS machine>
notifyme -vl- -f ANY -h idd.unidata.ucar.edu

As soon as you verify that this is running, I will search our LDM log
files to see if your 'notifyme' is actually reaching any of our LDMs.

> Thanks,
> 
> Wei
> 
> -----Original Message-----
> From: Unidata IDD Support [mailto:address@hidden]
> Sent: Wednesday, May 6, 2020 3:41 PM
> To: Wei Zhang
> Cc: address@hidden
> Subject: [LDM #DEO-146112]: Qustion on LDM
> 
> Dear Wei,
> 
> > This is Wei Zhang from Idaho Department of Environmental Quality.  We are 
> > interested in
> > installing AWIPS on our system so our meteorologists can use it in their 
> > day to day work.
> >
> > I have downloaded and installed AWIPS on our internal server, which is 
> > protected by state
> > and DEQ firewalls, no external hostname and IP address.  After I started 
> > EDEX and checked
> > around, I notice that we cannot get the data.  The error messages from LDM 
> > looks like:
> >
> > "20200506T152449.670662Z idd.unidata.ucar.edu[31904]                
> > error.c:err_log() NOTE  Upstream LDM didn't reply to FEEDME request; RPC: 
> > Unable to receive; errno = Connection reset by peer"
> 
> Your problem is likely due to our LDM's configuration-file not having an 
> ALLOW entry for your LDM's IP address.
> 
> What is the IP address that our LDM would see for your LDM?
> 
> > I did some researches and try to use telnet and nc programs to check it 
> > out.  It seems we
> > can reach idd.unidata.ucar.edu correctly but idd.unidata.ucar.edu reject 
> > the requests.
> > I am wondering if there is a way to allow an internal server without 
> > external network
> > address to get the data from idd.unidata.ucar.edu.  I am assuming that we 
> > can get the
> > data freely from idd.unidata.ucar.edu.
> 
> I'm sorry, but you shouldn't assume that you can get data from us for free 
> because we're only chartered to supply data to US universities. We'll have to 
> discuss this and get back to you.
> 
> > Thank you very much for your help!
> >
> > Wei
> >
> > Below is the output from telnet and nc programs:
> >
> > telnet idd.unidata.ucar.edu 388
> > Trying 128.117.135.3...
> > Connected to idd.unidata.ucar.edu.
> > Escape character is '^]'.
> > \ufffdConnection closed by foreign host.
> >
> > nc -vz idd.unidata.ucar.edu 388
> > Ncat: Version 7.50 ( https://nmap.org/ncat )
> > Ncat: Connected to 128.117.135.3:388.
> > Ncat: 0 bytes sent, 0 bytes received in 0.04 seconds.
> 
> Regards,
> Steve Emmerson
> 
> Ticket Details
> ===================
> Ticket ID: DEO-146112
> Department: Support IDD
> Priority: Normal
> Status: Open
> ===================
> 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.
> 
> 
> 

Cheers,

Tom
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Ticket Details
===================
Ticket ID: DEO-146112
Department: Support IDD
Priority: Normal
Status: Open
===================
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.