What is ProxyPassReverse used for?
William Taylor
Updated on June 07, 2026
The ProxyPassReverse is used to change the headers sent by the app (appcluster) to Apache, before Apache sends it the browser.
What does ProxyPass mean?
proxy configuration directive
ProxyPass is the main proxy configuration directive. In this case, it specifies that everything under the root URL ( / ) should be mapped to the backend server at the given address. ProxyPassReverse should have the same configuration as ProxyPass . It tells Apache to modify the response headers from backend server.
What is ProxyPreserveHost?
The ProxyPreserveHost directive is used to instruct Apache mod_proxy, when acting as a reverse proxy, to preserve and retain the original Host: header from the client browser when constructing the proxied request to send to the target server.
What is mod_proxy in Apache?
mod_proxy is an optional module for the Apache HTTP Server. This module implements a proxy, gateway or cache for Apache. With mod_proxy it is possible to set various web framework-based applications up as virtual hosts as well. mod_proxy can help to improve LAMP security or to strip SSL from HTTP requests.
What is Proxy_pass Nginx?
The proxy_pass directive sets the address of the proxied server and the URI to which location will be mapped. Here are some examples to show how the request URI will be mapped. The version of nginx: nginx version: nginx/1.4.2.
What is Mod_proxy in Apache?
What is Nginx Proxy_pass?
A proxy_pass is usually used when there is an nginx instance that handles many things, and delegates some of those requests to other servers. Some examples are ingress in a Kubernetes cluster that spreads requests among the different microservices that are responsible for the specific locations.
Can WordPress run on Nginx?
WordPress is written in PHP, and both PHP and WordPress can run on NGINX Unit, the new dynamic application server from NGINX, Inc. Formerly, deploying WordPress with NGINX required the use of a separate application server, such as Apache or PHP‑FPM.