We have SDL web 8.1 CMS system.

This CMS is accessed in below two different scenarios:

Scenario 1:

Access (hitting the CMS url) without any proxy server in between - This works perfectly fine without any issues and we can see various parts of CMS(publications, content) loading fine

Scenario 2: Access (hitting the CMS url) with a proxy inbetween.

To be more clear, this proxy is of our organization network only. When I try opening CMS, i get 401 unauthorized error for almost all URLs seen below.

enter image description here

Header Parameters are shown below: enter image description here

In the response headers, you can see there isa VIA header added. What setting i should do on the proxy to allow proper access ?

1 Answer 1


Please refer to this loopback link.

  • already tried this one, but did not help. Any other possible areas to check ?? Oct 29, 2018 at 18:35
  • 1
    This is why you should copy the relevant parts of any URL you link to in your answer: that link is now dead :) Aug 22, 2019 at 12:50

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