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[HttpFoundation] Mention that trusted proxies are not compatible with nginx realip #14798

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Jan 15, 2021
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[HttpFoundation] Mention that trusted proxies are not compatible with nginx realip #14798

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6 changes: 6 additions & 0 deletions deployment/proxies.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,11 @@ The Request object has several ``Request::HEADER_*`` constants that control exac
*which* headers from your reverse proxy are trusted. The argument is a bit field,
so you can also pass your own value (e.g. ``0b00110``).

.. caution::

The "trusted proxies" feature does not work as expected when using the
`nginx realip module`_. Disable that module when serving Symfony applications.

But what if the IP of my Reverse Proxy Changes Constantly!
----------------------------------------------------------

Expand Down Expand Up @@ -118,3 +123,4 @@ In this case, you'll need to set the header ``X-Forwarded-Proto`` with the value
.. _`security groups`: https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-security-groups.html
.. _`CloudFront`: https://en.wikipedia.org/wiki/Amazon_CloudFront
.. _`CloudFront IP ranges`: https://ip-ranges.amazonaws.com/ip-ranges.json
.. _`nginx realip module`: http://nginx.org/en/docs/http/ngx_http_realip_module.html