A proxy is a network server that acts as a gateway to the Internet. It monitors activity and protects the internal network from access by foreign computers that have not been granted access.
2006-07-24 09:25:30
·
answer #1
·
answered by Anonymous
·
0⤊
0⤋
>>>Proxy Definition<<<<
A server that acts as an intermediary between a workstation user and the Internet so that the enterprise can ensure security, administrative control, and caching service. A proxy server is associated with or part of a gateway server that separates the enterprise network from the outside network and a firewall server that protects the enterprise network from outside intrusion.
>>>How it works<<<
Instead of your Web browser heading for the Internet when you type in an URL, the proxy intercepts the request and asks for the page on your behalf.
The reply comes back to you, but via the proxy and the proxy server stores the reply, just in case you (or anybody else in your organization asks for it again shortly).
Thus, if the proxy were doing this for every individual within the organization, it would quickly build up a cache of all these requests, serving the same pages in a much reduced time on future requests.
2006-07-24 16:22:54
·
answer #2
·
answered by HotRod 5
·
0⤊
0⤋
In an enterprise that uses the Internet, a proxy server is a server that acts as an intermediary between a workstation user and the Internet so that the enterprise can ensure security, administrative control, and caching service. A proxy server is associated with or part of a gateway server that separates the enterprise network from the outside network and a firewall server that protects the enterprise network from outside intrusion.
A proxy server receives a request for an Internet service (such as a Web page request) from a user. If it passes filtering requirements, the proxy server, assuming it is also a cache server, looks in its local cache of previously downloaded Web pages. If it finds the page, it returns it to the user without needing to forward the request to the Internet. If the page is not in the cache, the proxy server, acting as a client on behalf of the user, uses one of its own IP addresses to request the page from the server out on the Internet. When the page is returned, the proxy server relates it to the original request and forwards it on to the user.
To the user, the proxy server is invisible; all Internet requests and returned responses appear to be directly with the addressed Internet server. (The proxy is not quite invisible; its IP address has to be specified as a configuration option to the browser or other protocol program.)
An advantage of a proxy server is that its cache can serve all users. If one or more Internet sites are frequently requested, these are likely to be in the proxy's cache, which will improve user response time. In fact, there are special servers called cache servers. A proxy can also do logging.
The functions of proxy, firewall, and caching can be in separate server programs or combined in a single package. Different server programs can be in different computers. For example, a proxy server may in the same machine with a firewall server or it may be on a separate server and forward requests through the firewall.
2006-07-24 16:24:49
·
answer #3
·
answered by BAM 7
·
0⤊
0⤋
when connecting to the internet your internet service provider allocates you an ip address - so if you are located in the uk - you will have a uk ip address - ip - is internet protocol, and it basically identifies your computer on the web and your location.
you can select though to connect to the web via a proxy server - some are either free public proxys or you can pay to use a commercial one - and this would be your gateway to the net and then you can actually mask the ip address of your actual computer - so say once again you are located in the uk and want to access a site in the usa - but for whatever reason the site has blocked international surfing - you could use a proxy server based in the usa and therefore your ip address would now be a usa one and you could surf the site that has blocked international surfing.
There are also many sites that monitor your IP address and by using a proxy server you remain annonymous and harder to trace.
2006-07-24 16:29:10
·
answer #4
·
answered by furnic 1
·
0⤊
0⤋
A proxy acts as a "mask" to the true identity of your system. When you , say for example, visit a web page, you request the page through the proxy and the proxy relays the information to your system. Logs on the site show the information of the proxy and not your system. This is a way of making your online activities anonymous...somewhat
2006-07-24 16:26:15
·
answer #5
·
answered by izombix 2
·
0⤊
0⤋
A proxy server is a computer that offers a computer network service to allow clients to make indirect network connections to other network services. A client connects to the proxy server, then requests a connection, file, or other resource available on a different server. The proxy provides the resource either by connecting to the specified server or by serving it from a cache. In some cases, the proxy may alter the client's request or the server's response for various purposes.
2006-07-24 16:24:15
·
answer #6
·
answered by Paultech 7
·
0⤊
0⤋
A proxy server is a server that acts as an intermediary between a workstation user and the Internet so that the enterprise can ensure security, administrative control, and caching service. A proxy server is associated with or part of a gateway server that separates the enterprise network from the outside network and a firewall server that protects the enterprise network from outside intrusion.
2006-07-24 16:23:17
·
answer #7
·
answered by EG345 4
·
0⤊
0⤋
Proxy an area that is responsible takin votes
2006-07-24 16:22:25
·
answer #8
·
answered by PG 4
·
0⤊
0⤋
Gee I couldn't understand these answers either, soooo here's a site that will explain better.
http://www.publicproxyservers.com/
2006-07-24 16:27:38
·
answer #9
·
answered by camaro46368 4
·
0⤊
0⤋