Editing Proxy server (section)

===Open proxies===
[[File:Open proxy h2g2bob.svg|thumb|upright=1.3|alt=Diagram of proxy server connected to the Internet.|An open proxy forwarding requests from and to anywhere on the Internet]]
An [[open proxy]] is a [[Store and forward|forwarding]] proxy server that is accessible by any Internet user. In 2008, network security expert [[Gordon Lyon]] estimated that "hundreds of thousands" of open proxies are operated on the Internet.<ref name="nmap" />

* [[Anonymous proxy]]: This server reveals its identity as a proxy server but does not disclose the originating [[IP address]] of the client. Although this type of server can be discovered easily, it can be beneficial for some users as it hides the originating IP address.
* ''Transparent proxy:'' This server not only identifies itself as a proxy server, but with the support of [[List of HTTP header fields|HTTP header fields]] such as <code>X-Forwarded-For</code>, the originating IP address can be retrieved as well. The main benefit of using this type of server is its ability to cache a website for faster retrieval.