Why would you need a web proxy
The most common method for hiding an IP address is by using a proxy server. Proxy servers are computers that allow people to make indirect connections to them and then connect to their final destination on the web. For example, a client connects to a proxy server from their broadband connection to download a website file from ProxyCreate.com. The proxy server would be the computer and IP address that actually connects to our website, not your broadband connection or IP address.
A proxy is a point to point connection between you and a remote location on the Internet. If you're in a hotel in Seattle and you work for a large corporation down in Dallas, then opening a VPN to your corporate office means your computer will create a permanent connection between your own system and a dedicated device at the corporate office called the VPN server. This connection provides you with a tunnel through which all further communication will pass. This is the first and most well known quality of a VPN. All of your traffic, whatever it is, will be encrypted inside that tunnel, going from your current location to the VPN server, and then be resent on your behalf to the wider Internet. What this means is that anyone listening nearby, or trying to see the packets going from your own system, will see nothing but static. In fact, they won't even know which websites you visit, because everything is encrypted. This is an even stronger security mechanism than SSL, since with SSL people can still see the headers and know which sites you surf to.
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Proxies are generally used to circumvent a filter that is blocking access to some websites, this can be set by your administrator or network. It is also used in order to get privacy - network administrators find it much harder to snoop on your browsing habits.
When you use a proxy, the request of the website will not be send to the website directly, but to the proxy. The proxy sends your request to the website you want to view, but now uses the information of that proxy server. This simply means that you'll not be directly connected to the website, but the proxy site is. This extra step will make the browsing go slower, but should circumvent the block.
The sites listed below include a few links to proxy websites. If you find that proxy websites are also blocked, look for the newly-created ones that would not have ended up on your administrator's banlist - yet.