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Update load_balancer_reverse_proxy.rst #5242

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3 changes: 3 additions & 0 deletions cookbook/request/load_balancer_reverse_proxy.rst
Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,9 @@ In this case, you'll need to - *very carefully* - trust *all* proxies.
$response = $kernel->handle($request);
// ...

#. Ensure that the trusted_proxies setting in your ``app/config/config.yml``
is not set or it will overwrite the ``setTrustedProxies`` call above.

That's it! It's critical that you prevent traffic from all non-trusted sources.
If you allow outside traffic, they could "spoof" their true IP address and
other information.
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