利用者:LamoreauxBoatner834

出典: くみこみックス

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最新版

The Functions of a Proxy Server

A server is really a combination of one or several hardware and software made to provide networking plan to clients. Individually, it might also make reference to any software or dedicated hardware used to provide such service or any system that's running a server operating system.

A proxy server could therefore be described as a firewall mechanism that substitutes the IP address of the protected host network with a temporary address for all data traffic passing through it. It makes decisions to authenticate the user or client IP address' permission to gain access to the network and establishes link with any remote computer on behalf of the user.

In essence, it's a computer that acts being an interface or intermediary to connect two or more computers that have different protocols and are placed at various remote locations over the internet.

Whenever a user (computer) tries to connect to another user to look for any resources for example files, web pages, connections, etc available on their database, it is the proxy server that evaluates if such connection is permitted based on the existing settings on the remote computer. Once the proxy server authenticates that these conditions are met, after that it helps make the request on behalf of the consumer and establishes the bond.

web proxy

The proxy server can either modify either the request or response from the user or client or, react to a request without contacting the server. It will this by utilizing cached similar responses stored around the remote server that the resources are now being requested from.

The other functions include:

1. It reduces time needed to access resources from servers by serving cached responses for similar request to clients. 2. It serves a log to provide info on internet usage for auditing or evaluation purposes. 3. It could be accustomed to over-ride security or parental control 4. It enables access to regionally restricted resources 5. It hides its clients for anonymous browsing and security 6. It may be used to block access to unwanted or unauthorised sites 7. It serves as a scan to filter malware before delivering requested resources 8. It serves as a scan to bar certain outgoing data. This is for protected files

As it is an intermediary that acts with respect to two or more users or clients, a proxy server can be placed anywhere in-between the users or at destination servers on the internet for it to serve its functions.