Sunday, November 22, 2015

All about Proxies / P2P Proxies network / Reverse proxies |

All about Proxies / P2P Proxies network / Reverse proxies | proxy server is any computer system offering a service that acts as an intermediary between the two communicating parties, the client and the server. In the presence of a proxy server, there is no direct communication between the client and the server. Instead, the client connects to the proxy server and sends requests for resources such as a document, web page or a file that resides on a remote server. The proxy server handles this request by fetching the required resources from the remote server and forwarding the same to the client. While each of these systems provides unique features, they all rely on providing access to content via IP recognition. This method takes advantage of the uniqueness of public IP addresses that are registered to a particular institution. Because these are unique and cannot be impersonated, they provide a unique and reliable way to ensure that requests for content coming from computers at those IP addresses indeed belong to the institution and therefore the user is a member of this institution. This is similar to providing the content provider with a unique phone number. Therefore, whenever they see an incoming "call" from that phone number, they have "Caller ID" to identify who is requesting the content, and if they indeed have valid permission to do so, they can provide this content back to the "caller". A proxy server is software running on a computer located somewhere between a remote user and the Internet resources the user wishes to access. The proxy server intercepts all requests coming from the remote user and, in effect, becomes a gateway through which the remote user accesses Internet resources. A function that is often combined with a firewall is a proxy server. The proxy server is used to access Web pages by the other computers. When another computer requests a Web page, it is retrieved by the proxy server and then sent to the requesting computer. The net effect of this action is that the remote computer hosting the Web page never comes into direct contact with anything on your home network, other than the proxy server.

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