Chapter 10. Web Proxies
“The hardest thing for people to grasp about the Web is that it has no center; any computer (or node, in mathematical terms) can link to any other computer directly, without having to go through a central connection point. They just need to know the rules for communicating.”
—Mark Fischetti, editor of Scientific American1
It’s a port-80 world out there (and, to a lesser extent, port 443 as well). As of 2009, web traffic made up approximately 52% of all Internet traffic, and was growing at a rate of 24.76% per year.2
As a result, firewalls, which filter traffic based on Layer 3 and 4 protocol information such as IP address and TCP ports, are no longer sufficient for protecting enterprise perimeters. There has been an explosion ...
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