Minimal working Apache reverse proxy setup

Bare minimum setup for public exposing your server apps running on ports that are not 80 or 443.

Let’s assume we have some app running on localhost:8080 and we want to expose it to public using our domain example.com:

<VirtualHost *:80>
    ServerName example.com
    ProxyRequests     Off
    ProxyPreserveHost On
    AllowEncodedSlashes NoDecode
    <Proxy http://localhost:8080/>
      Order deny,allow
      Allow from all
    </Proxy>
    ProxyPass         /  http://localhost:8080/ nocanon
    ProxyPassReverse  /  http://localhost:8080/
    ProxyPassReverse  /  http://example.com
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>