[LON-CAPA-admin] Unable to see resources from uiuc domain

Bob Gonzales rgonzal at binghamton.edu
Wed Feb 1 08:41:36 EST 2017

Hi All,

I've got a situation where none of my servers can view the actual resources
from the uiuc domain.  They can all browse to any subdirectory and can look
at the metadata for any resource.  But they can't see the contents of a
resource file.  The window that shows the rendered resource does open but
just has the one line "Unable to find SomeFileName.problem"  for problems
and "Sorry! Resource not available." for images in it.

For each resource that can't be viewed there is a line in lonnet.log like

 LWP get: 500 Can't connect to library1.lon-capa.uiuc.edu:443:

I had the network IT guy for the university look at the edge firewall logs
and he could see my requests going out but he didn't see any answers coming
back from the uiuc server.  He wasn't 100% sure that he logs everything
coming in though so it's not definitive that they aren't coming back.
Though the message above would lead one to think that uiuc is not replying
or not getting my request.

I can browse to and see resources in other domains.  I also logged into my
course using a msu access server and was successful viewing uiuc

Entries in lonc.log and lond.log show that connections are being made and
the fact that I can browse the subdirectorys says some things are OK.

Is is somehow related to the ssl request on port 443?  I am not running ssl
in the binghamton domain.  However, I can see resources on other domains
(e.g. msu) that are
running ssl.

Using nmap against library1.lon-capa.uiuc.edu shows port 443 open.

Bob Gonzales
Binghamton University
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