The HTTP Problem
One of the most commonly used protocols, Internet-wide, is HTTP (although peer-to-peer filesharing applications are fast catching up). Most businesses have a website running on HTTP as their basic Internet presence and there are very few Internet users that don't use HTTP. We can be pretty confident that this is going to be a protocol used on our network.
HTTP presents us with an important problem when it comes to bandwidth—users expect HTTP to be almost instantaneous. Introducing delays to a user's web browsing experience due to bandwidth congestion is far from an ideal situation and is probably the first place network users are going to notice (and complain!) about a lack of bandwidth. Luckily, IPCop provides us with very powerful options to reduce HTTP's impact on the network.