This is a very common problem. Most businesses, schools or public institutions, blocking many websites with the aim of not allowing employees and students reduce their productivity or simply distract more than they should. What happens when we want and we can not go to a website work? Well, we did not stay with his arms crossed, is not it?
In the Wikipedia is a good article on what a Proxy. Now, we will not dwell explaining this, it is irrelevant. But that's what we will use to access sites blocked by firewalls. That is, we're going to access blocked sites through proxy servers.
How do Proxy Servers Work?
Proxy servers act as intermediaries between a website and your browser. Commonly used to manage all browser requests a firewall and thus obtain certain advantages how to surf anonymously and more safely.
Now we proceed to configure your browser.
In the case of Firefox, we go to Tools -> Options -> Advanced -> Network -> Settings. Select "Manual proxy configuration" and add the proxy that we want to use for this port.
In the case of Internet Explorer, we go to Tools -> Internet Options -> Connections -> LAN Settings. And add the address and port of our proxy server.
