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20020624: NEXRAD Level III data in WSI format (cont.)

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  • Subject: 20020624: NEXRAD Level III data in WSI format (cont.)
  • Date: Mon, 24 Jun 2002 17:30:05 -0600
>From: Louis Nguyen <address@hidden>
>Organization: NASA/Langley
>Keywords: 200206241856.g5OIuJa26379 NEXRAD imagery

Louis,

>LDM is setup and running.

Excellent.

>All that is need is to contact our network
>guys to allow port 388 thru the firewall.  Things seems to be working
>on this end.  I'm wondering if port 388 is block from our end.

It appears to be.  I can't do either a ping or ldmping to
angler.larc.nasa.gov.  A traceroute to the machine gets to Langley
and then goes into "star" mode:

traceroute angler.larc.nasa.gov
traceroute to angler.larc.nasa.gov (128.155.17.143), 30 hops max, 40 byte 
packets
 1  flra-n140 (128.117.140.252)  0.802 ms  0.460 ms  0.315 ms
 2  gin-n243-80.ucar.edu (128.117.243.81)  0.652 ms  0.653 ms  0.615 ms
 3  gimlet-n243-34.frgp.net (128.117.243.34)  1.654 ms  2.051 ms  1.742 ms
 4  198.32.11.105 (198.32.11.105)  1.995 ms  1.506 ms  2.543 ms
 5  kscy-dnvr.abilene.ucaid.edu (198.32.8.14)  12.579 ms  12.426 ms  12.549 ms
 6  ipls-kscy.abilene.ucaid.edu (198.32.8.6)  21.284 ms  21.820 ms  21.338 ms
 7  clev-ipls.abilene.ucaid.edu (198.32.8.26)  27.678 ms  27.960 ms  27.942 ms
 8  nycm-clev.abilene.ucaid.edu (198.32.8.30)  39.776 ms  39.954 ms  39.980 ms
 9  wash-nycm.abilene.ucaid.edu (198.32.8.45)  44.165 ms  44.942 ms  44.274 ms
10  192.84.8.253 (192.84.8.253)  59.895 ms  66.772 ms  49.449 ms
11  128.161.3.14 (128.161.3.14)  58.384 ms  49.648 ms  67.993 ms
12  s-larc.nsn.nasa.gov (128.161.130.2)  70.176 ms  70.657 ms  70.739 ms
13  br1-iso.larc.nasa.gov (192.94.65.1)  70.823 ms  70.812 ms  70.456 ms
14  * * *
15  * * *
16  * * *
 ...

This looks like hitting a firewall to me.

>My
>machine has special firewall exemption for services like ssh, ftp,
>etc.  I bet the port 388 is blocked.  I'm not getting any data now. 
>We'll see in the morning.

Sounds good.

Tom

>From address@hidden Mon Jun 24 17:41:07 2002

Tom,

That's interesting.  I think we're having some network problem.  I had
someone today say they can access our webpage.  The security folks
might fiddle with the firewall.  There's no one here to ask.  I guess
it's a hint for me to go home.  Talk to you tomorrow.

-Louis