Also called virtual hosting, an extension to reverse proxying that is supported by Microsoft Proxy Server. Using reverse hosting, the proxy server simulates virtual roots on a Web server and redirects requests for a particular domain and root combination to a single Web server.
This approach means that only one hole needs to be opened through the Proxy Server firewall to allow Hypertext Transfer Protocol (HTTP) requests to enter. Reverse proxying works as an application layer proxy service and supports HTTP only.