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Originally Posted by Matthew
Why do ntl use proxies, they are the only ISP that I know that does use them.
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Proxies, if working correctly, can deliver content quicker than having to go to the originating site, particularly if that site is on the other side of the world. They also reduce the volume of data having to be carried outside of the ISP's network. There are two main problems with their use, they don't always work correctly and some sites use IP checking which only picks up the proxy IP rather than the customers IP. This is not a problem with the proxies themselves but badly written software being useed by the site which could get the correct IP if re-written correctly. Only finding the proxy IP the site may get the false impression that they are under a ddos attack and prevent the customer from connecting.