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Duplicated Header 400 Error - Help

Posted by bbogdan 
Duplicated Header 400 Error - Help
April 19, 2017 02:44AM
Hi Everyone,

I have a terry strange issue i'm dealing with right now. For about 0.09% of the traffic we get a 400 (Duplicated Header ) Error from Nginx.
I don't really run a very standard setup but i would like to understand what could be the cause of this.

a current traffic flow looks like
Client => DDOS Mitigation(also nginx) = > Nginx Reverse Proxy => Imperva WAF => Haproxy*(SSL Offload) => Nginx (Magento-Stack) 400 error here

On both Nginx servers i have ignore_invalid_headers set to off.
Re: Duplicated Header 400 Error - Help
June 21, 2017 05:53AM
Hi bbogdan,

I am working now on this configuration: Nginx Reverse Proxy => Imperva WAF

May I ask you to help me, how you configure this chain?
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