This is the default example configuration of proxy.conf provided by Apache. This config file was generated by Apache running on Ubuntu 16.04.
It is located under: /etc/apache2/mods-available/proxy.conf
<IfModule mod_proxy.c>
# If you want to use apache2 as a forward proxy, uncomment the
# 'ProxyRequests On' line and the <Proxy *> block below.
# WARNING: Be careful to restrict access inside the <Proxy *> block.
# Open proxy servers are dangerous both to your network and to the
# Internet at large.
#
# If you only want to use apache2 as a reverse proxy/gateway in
# front of some web application server, you DON'T need
# 'ProxyRequests On'.
#ProxyRequests On
#<Proxy *>
# AddDefaultCharset off
# Require all denied
# #Require local
#</Proxy>
# Enable/disable the handling of HTTP/1.1 "Via:" headers.
# ("Full" adds the server version; "Block" removes all outgoing Via: headers)
# Set to one of: Off | On | Full | Block
#ProxyVia Off
</IfModule>
# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
Download the raw file with wget or curl
wget -O proxy.conf.example http://exampleconfig.com/static/raw/apache/ubuntu16.04/etc/apache2/mods-available/proxy.conf
curl http://exampleconfig.com/static/raw/apache/ubuntu16.04/etc/apache2/mods-available/proxy.conf > proxy.conf.example
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