These days, schools are so strapped for
cash, they cant afford the Internet bandwidth for students to do useful
and fun thing on school computers. Some schools expect students to
actually do work during IT lessons, and some IT departments just don't
like YouTube. However, the days are over when they can lock down the
system enough to stop determined students from using the Internet as
they please.
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De-filters
These are websites which take a URL, and collect the content for you.
The work because the filters only see you downloading data from an
unblocked website (the de-filter); the connection to the banned site is
from another external web server so it doesn't pass through your schools
filters.
These are some good de-filter websites:
These are just a few of the hundreds of de-filter websites revealed by a quick google search. Where possible, tick the box that turns on some kind of encryption. This prevents the IT department seeing what sites you gave unblocked. Also, sites that use the HTTPS protocol are even harder to be caught with.
However, de-filter sites do not always unblock active content
such as flash, or videos so they are not perfect. If you find a good
de-filter, don't give it to anyone because it will soon spread round the
school, and end up blocked.
Using a new proxy
Most school filters work by directing all traffic through a proxy
server, which scans URLs for blocked keywords. Internet Explorer uses
the system wide proxy for HTTP. However, FireFox can have its own proxy
set. Firefox will route all traffic through the open proxy server,
avoiding using banned keywords in the URL. This traffic will then be
sent through the filter proxy by the operating system, but will not be
blocked if all has worked well.
1) Get a copy of FireFox on a memory stick. It's best to use the portable version available here
because it wont leave evidence of running FireFox on the main system
hard drive. This version also remembers your bookmarks, passwords etc.
2) Set up FireFox to a proxy. Open the Tools menu, then click
Options. Then click the Connection Settings button in the resultant
window. Click the radio button for "Manual proxy configuration", and
fill in relevant proxies/port numbers. A list of free proxies and port
numbers is available here. Now, all should work as planned.
Creating your own proxy
If you have a computer at your own home that's connected to the internet, you can use software such as Psiphon
to act as a proxy between your school's and your home's connection.
Once you have the software installed and a proxy set up, you can use the
URL it provides (typically just the user's home IP address) and paste
it into your school's browser. At this point, you would enter the
password you set up to access the proxy and begin browsing.
User-created Psiphon proxies are much more difficult to block
than public proxies, as the connection comes from a user's home
computer, rather than a public web site. Besides this, most ISPs give
home connections dynamic IP addresses, meaning that any one user's home
proxy will change its IP address every now and then, adding an
additional layer of difficulty in tracking them.
HTTPS
This is the most simple of them all but sometimes does not to work.
It's as simple as just adding an S on to the http. so lets say for
example http://www.facebook.com/ you would change it to https://www.facebook.com/
UltraSurf
In my high school we use a program called UltraSurf. http://www.ultrareach.com/
All you need to do is download this to a flash drive (some kids save it
to our student drives on our network, but I don't suggest this as the IT
department will find out) and when you are at school run it. It will
pop up with a new browser window and viola! Surf the net as you please!
Tags
tecnologia