Re: [thredds] TDS and HTTPS

Roy-
We (Unidata/netcdf-c) have a test server that supports both http:
and https:. You might try it as long as not too much traffic
is generated. The server is remotetest.unidata.ucar.edu/thredds
=Dennis Heimbigner

p.s. the netcdf-c library supports https via curl (There is documentation
in the library: auth.html).
I am currently in the process of upgrading the authorization support
in netcdf-java. The existing one works with https:, but does not
support e.g. URS.

On 12/22/2015 3:00 PM, Roy Mendelssohn - NOAA Federal wrote:
When I get some time, we will be setting up a test service.  My brief experience with some 
libraries in Python and R, assuming I did things correctly which may not be the case, is that 
they won’t handle the redirect properly.  Moreover, for many of the users I 
can’t be certain as to exactly what they are using to get the data.

It is pretty clear that when the executive order was made they were thinking of web pages 
accessed by modern web browsers.  In those cases, a redirect will work fine.  I do not think 
they thought a lot about web services accessed by scripts, and whether those would work okay. 
 Or if they did, they are assuming a closed, readily accessed environment, that can readily 
be notified of a change like that.  However, that is not the environment we operate in.  We 
have 100’s if not 1000’s of outside users who routinely access our data 
services using scripts.  Even if we can run http and https side by side will be okay,  For 
those who want assurance of who they are connecting to, https.

And when we get a test site up, I will do some timings.  We get some very big 
requests from users, if using https truly slows things down that much, ouch.

-Roy




On Dec 22, 2015, at 1:16 PM, John Caron <jcaron1129@xxxxxxxxx> wrote:

usually with libraries like curl, apps like wget will handle the redirects 
transparently, but of course one must test....

On Tue, Dec 22, 2015 at 1:49 PM, Roy Mendelssohn - NOAA Federal 
<roy.mendelssohn@xxxxxxxx> wrote:
Our problem is we have services used by 100’s of people in scripts, and this will 
likely break them all, as in many languages even f there is a redirect, the script 
can’t handle the response.

-roy
On Dec 22, 2015, at 12:09 PM, Gerry Creager - NOAA Affiliate 
<gerry.creager@xxxxxxxx> wrote:

Just to touch on the subject of exemptions, We've tried and been denied. We're 
encrypting everything. No, scientific data use cases were not considered, but 
that's not done us much good to date.

Gerry

On Fri, Dec 18, 2015 at 1:05 PM, Antonio S. Cofiño <cofinoa@xxxxxxxxx> wrote:
AJP protocol is configured ProxyPass using the mod_proxy_ajp
ProxyPass /app ajp://backend.example.com:8009/app

may be you mean using a directly the http protocol for proxying the backend
ProxyPass /app http://backend.example.com:8080/app

ajp, is more convenient because simplify the things and make transparent the 
proxying process to tomcat connector, i.e. the info about the SSL connection 
between the frontend and client.

Here there is some doc:
https://tomcat.apache.org/connectors-doc/common_howto/proxy.html

http protocol, can be also repleace ajp, but you need to make some "plumbing" 
with HTTP headers and tomcat connectors

Antonio

El 18/12/2015 a las 19:39, Guan Wang escribió:
Hi John,


Is AJP having any advantage particularly over ProxyPass?


Thanks,


Guan


From: thredds-bounces@xxxxxxxxxxxxxxxx 
[mailto:thredds-bounces@xxxxxxxxxxxxxxxx] On Behalf Of John Caron
Sent: Friday, December 18, 2015 12:56 PM
To: James Gallagher
Cc: THREDDS THREDDS
Subject: Re: [thredds] TDS and HTTPS


I agree, an Apache front end is a simple and standard thing to do.


AFAIU, the user still is using SSL encryption, its just that Apache is doing 
that instead of Tomcat. So it would be good for any of us to make some 
measurements comparing large binary data transfers.


On Fri, Dec 18, 2015 at 10:42 AM, James Gallagher <jgallagher@xxxxxxxxxxx> 
wrote:


On Dec 18, 2015, at 9:06 AM, Steve Ansari - NOAA Federal 
<steve.ansari@xxxxxxxx> wrote:


Sure - I'll follow up offline.


Steve



On Fri, Dec 18, 2015 at 11:04 AM, Roy Mendelssohn - NOAA Federal 
<roy.mendelssohn@xxxxxxxx> wrote:

Hi Steve

I was hoping that would work.  That any proxying, whether AJP or other, would 
be hidden.  I have had problems in the past getting AJP proxying to work, if I 
need to do that.  Can  you send me (offline) the part of you httpd.conf where 
you proxy over to tomcat using AJP?


We have had good success using Apache & AJP. Apache as a front end provides a 
number of options, particularly WRT authentication and this might provide for a 
compromise should HTTPS be too much of a bottle neck. I have not tested the impact 
of HTTPS compared to HTTP (it would be easy enough to do using simple file 
transfers).


James




Thanks,

-Roy


On Dec 18, 2015, at 7:59 AM, Steve Ansari - NOAA Federal 
<steve.ansari@xxxxxxxx> wrote:

Hey Roy,

We are using Apache to handle all the HTTPS stuff.  Apache then forwards 
requests to Tomcat and TDS using AJP.
https://tomcat.apache.org/tomcat-7.0-doc/config/ajp.html

Our TDS:
https://www.ncdc.noaa.gov/thredds/catalog.html


Steve


On Fri, Dec 18, 2015 at 10:29 AM, Roy Mendelssohn - NOAA Federal 
<roy.mendelssohn@xxxxxxxx> wrote:
Hi All:

As I hope you know, the Federal government is required to migrate to https for 
all services in the next1.5 years.  My question is can the TDS work with https? 
If so, can you point me to any documents or what changes, if any, need to be 
made to use https.  If not, are there plans to incorporate this ability into 
TDS?

Thanks,

-Roy



**********************
"The contents of this message do not reflect any position of the U.S. Government or 
NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new address and phone***
110 Shaffer Road
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: Roy.Mendelssohn@xxxxxxxx www: http://www.pfeg.noaa.gov/

"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected"
"the arc of the moral universe is long, but it bends toward justice" -MLK Jr.

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--
Steve Ansari
Physical Scientist
NOAA National Centers for Environmental Information (NCEI)
(828) 271-4611

The newly formed NCEI merges the National Oceanographic Data Center (NODC), the 
National Climatic Data Center (NCDC), and the National Geophysical Data Center 
(NGDC).
**********************
"The contents of this message do not reflect any position of the U.S. Government or 
NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new address and phone***
110 Shaffer Road
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: Roy.Mendelssohn@xxxxxxxx www: http://www.pfeg.noaa.gov/

"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected"
"the arc of the moral universe is long, but it bends toward justice" -MLK Jr.




--

Steve Ansari

Physical Scientist

NOAA National Centers for Environmental Information (NCEI)

(828) 271-4611


The newly formed NCEI merges the National Oceanographic Data Center (NODC), the 
National Climatic Data Center (NCDC), and the National Geophysical Data Center 
(NGDC).

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--

James Gallagher
jgallagher@xxxxxxxxxxx



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--
Gerry Creager
NSSL/CIMMS
405.325.6371
++++++++++++++++++++++
“Big whorls have little whorls,
That feed on their velocity;
And little whorls have lesser whorls,
And so on to viscosity.”
Lewis Fry Richardson (1881-1953)
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For list information or to unsubscribe,  visit: 
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**********************
"The contents of this message do not reflect any position of the U.S. Government or 
NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new address and phone***
110 Shaffer Road
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: Roy.Mendelssohn@xxxxxxxx www: http://www.pfeg.noaa.gov/

"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected"
"the arc of the moral universe is long, but it bends toward justice" -MLK Jr.

_______________________________________________
thredds mailing list
thredds@xxxxxxxxxxxxxxxx
For list information or to unsubscribe,  visit: 
http://www.unidata.ucar.edu/mailing_lists/

**********************
"The contents of this message do not reflect any position of the U.S. Government or 
NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new address and phone***
110 Shaffer Road
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: Roy.Mendelssohn@xxxxxxxx www: http://www.pfeg.noaa.gov/

"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected"
"the arc of the moral universe is long, but it bends toward justice" -MLK Jr.

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thredds mailing list
thredds@xxxxxxxxxxxxxxxx
For list information or to unsubscribe,  visit: 
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