Hi Ying,

This config "zeppelin.server.allowed.origins" is to do with setting CORS
header, which means this will continue to work over curl, but will get
blocked over any browsers. I've attached a screenshot for reference.


[image: Screenshot from 2018-06-26 09-48-23.png]


Let me know if this helps.

On Tue, 26 Jun 2018 at 04:07, Ying Chen <ying.in...@gmail.com> wrote:

> Hello -
>
> I am in the process of validating some security settings for Zeppelin
> (0.7.3 w/ HDP 2.6.3)
>
> According to:
> https://zeppelin.apache.org/docs/0.7.0/install/configuration.html
> zeppelin.server.allowed.origins can be set to only allow requests that is
> coming from a specific host.
>
> I am not sure if I am using this correctly.
>
> My HDP system is:  my.system.com,
> running http://my.system.com:9995 - in zeppelin
>
> I've updated the advanced zeppelin-config with :
> zeppelin.server.allowed.origins=https://my.system.com
>
> ----------
> After restarting - to test:
>
> Use curl from my machine:  mydesktop.system.com
>
> 1. Get a JSESSIONID:
> curl -i -X POST "http://my.system.com:9995/api/login?password=
> <passwd>&userName=<uid>"
>    -> retrieve JSESSIONID from cookie.
>
> 2. Try a query against api/notebook. (I can get at the security
> curl -v -b 'JSESSIONID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx; Path=/;
> HttpOnly'  http://my.system.com:9995/api/notebook
>      -> This works ...  should it?
>
> 3. Attempt to add random headers...
> curl -v -b 'JSESSIONID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx; Path=/;
> HttpOnly'  -H 'Host: bogus1.referer.com' -H 'Origin: bogus2.referer.com'
> -H 'Connection: keep-alive' -H 'Referer: http://bogus3.referer.com
> ' http://my.system.com:9995/api/notebook
>
>      -> This still works... should it ?
>
> The verbose output shows that Host, Referer and Origin has been passed,
> yet I am not seeing any sort of blocking...
>
> > Host: bogus1.referer.com
> > User-Agent: curl/7.54.0
> > Accept: */*
> > Cookie: JSESSIONID=<sid>; Path=/; HttpOnly
> > Origin: bogus2.referer.com
> > Connection: keep-alive
> > Referer: http://bogus3.referer.com
>
> < HTTP/1.1 200 OK
> < Date: Monday, June 25, 2018 3:16:32 PM PDT
> < Access-Control-Allow-Origin:
> < Access-Control-Allow-Credentials: true
> < Access-Control-Allow-Headers: authorization,Content-Type
> < Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, HEAD, DELETE
> < X-FRAME-OPTIONS: SAMEORIGIN
> < X-XSS-Protection: 1
> < Content-Type: application/json
> < Date: Mon, 25 Jun 2018 22:16:32 GMT
> < Content-Length: 75
> < Server: Jetty(9.2.15.v20160210)
> <
>
>
> Thoughts?
>
> Ying
>
>

-- 
Thankx and Regards,

Prabhjyot Singh

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