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As Facebook is blocked on a network, such as in the office. They handle two systems, one through the firewall or through the proxy. According to the definition of criptomicon "The Proxy and firewall are different, but should always be combined.


The proxy is used to redirect requests received from multiple users to the Internet in a transparent manner and is responsible for return their responses (web pages). Can also be used for FTP, POP3, SMTP, IMAP, TELNET, etc., While the firewall protection method on the local network or a personal computer, with which we can close or leave open certain ports, IPs, applications , etc.. .... In simple terms through them can block access to sites, terms, IP's and ports for communications and this is the way we innabilitan access to Facebook.

In this situation the way into serious style hacker access or failing that, a friend of the system administrator to provide us access, but so are the alternatives that we have zero.

But as in the network is everything and for all, there are always alternatives, such as "freeproxies", which as it allows us to "hide", "anonymize" both our IP and the request for access to the facebook website (or other blocked sites like youtube and fotolog).

you access to websites in our place and we send the message that we want to see.
With our Internet service provider: we always connect the same server, ie the proxy for a remote site does not exist, the proxy server is that it connects.

"Everything has costs and risks"

This form of navigation through an anonymous intermediary server has its potential risks and limitations:

* Connection time longer, as the "application" (or data packet) follows this line: our PC => free proxy => Website => free proxy => our pc, not counting the processing time proxy server.
* Security proxy, because we can not know who is behind it, the intentions and whether the data passing through this intermediate will be intercepted and then reused with bad intentions, such as personal information and your password.