Friday, October 15, 2010

Proxy Server

Proxy Server is an important safety feature, it works mainly in the Open Systems Interconnect (OSI) layer model of dialogue, and thus play the role of the firewall. Most of the proxy server is used to connect INTERNET (Internet) and INTRANET (LAN).
In general, we use the web browser to connect to other Internet sites directly to obtain network information, is directly connected to the destination site server, and then by the destination site server to transmit the information back. Proxy server is between the client and the Web server to another server, with it, the browser is not directly to the Web server to retrieve web page but the request to the proxy server, the signal will be sent to the proxy server, by the proxy server to retrieve the information needed by the browser and send your browser.
In the URL box, enter the address you want to visit the site, click the proxy browser will open a new window links the proxy server, you can wait a few seconds, if such appears not link server error, please try to select another server above, Because the proxy server resource consumption is relatively large, and there is timely, therefore sometimes can not open, must be several attempts to proxy servers. Automatically updated each day the latest available server.
 Most proxy servers have a buffer function, like a large Cache, it has great storage space, it continues to obtain new data storage to its local memory, and if the browser that the requested data in the machine already exists on the memory and up to date, it is not re-fetch data from a Web server, but directly to the memory on the data to the user's browser so that we can significantly improve browsing speed and efficiency.
 More importantly: the proxy server is the Internet Gateway provides link level security is an important feature, which work mainly in the Open Systems Interconnection (OSI) layer model of dialogue, and thus play the role of the firewall.
For these reasons, most of the proxy server is used to connect INTERNET (Internet) and INTRANET (LAN).

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