What is a Reverse Proxy , How to implement in Web server ?

In simple words reverse proxy server is an intermediate server which hides the real path of your URL, it means the front end URL is not the real URL of the server and the hiding process is done by the reverse proxy.

Reverse Proxy not only hiding orginal Urls but also perform various operation such as Load balancing,Caching,SSL/TLS termination,Security and protection,Content optimization and many more features

To implement Reverse proxy you have simply install and run Nginx for that you can read this article