How to access blocked websites here we will discuss few ways to bypass the restrictions at your school, college or office to access blocked websites like normal.
Before you try out any of the methods listed here to access blocked Website, I suggest you install [You must be registered and logged in to see this link.].
For faster and smoother internet access, Firefox is the best browser
available out there. When you are accessing proxy sites or similar sites
prefer using Firefox over Internet Explorer.

Note: Please authenticate with your
local authorities before using these options. We will not be held
responsible for any breach of regulation done by you.

1- Use IP Address Instead of URL


Sometimes we can easily access blocked websites by using IP address instead of using the complete URL of the web. It depends on the Software or the application used. We can check the IP address of any website by executing ping command in the command prompt.
To run command prompt press “window key+r” and type “cmd” in the text field. suppose you want to check the Yahoo.com IP address type “ping yahoo.com” and hit enter this will return the IP address of yahoo.com as you can see below in screen shot.

2- Redirection with Short URL service


Sometimes converting the URL into some undersized URL by using Short URL Services we can easily access banned websites. Here are some Short URL services [You must be registered and logged in to see this link.], [You must be registered and logged in to see this link.], [You must be registered and logged in to see this link.]
3- By using Google Cache


Most of the search engines like Yahoo and Google cached
web pages. Web pages are being stored in search engines so we can
easily view cached versions of those pages by clicking “Cached” next to the URL in Google search Results, as updated as Google caches it.

4- Use Google Mobile search


Blocked web pages can access by using [You must be registered and logged in to see this link.], but output may not be optimal. This is very similar to using a Web proxy.
5- Wayback Machine


This is another way to access blocked websites through cache. Wayback
Machine is an Internet Service that frequently keeps a copy of website
from the day a website got started. By clicking on the latest copy of
what Wayback Machine stored given us access to that blocked website,
almost a latest cached copy.
6- Using a public Proxy Server


There are many free proxy servers out in the Web. Note
that in order to use these you have to change internet connection
settings in Internet Explorer or whatever browser you use. To get free
proxy click [You must be registered and logged in to see this link.].
a. Proxy Surfing – Firefox
Go to: Advanced tab > Network tab > Connection Settings.
Select Manual proxy configuration, insert your proxy under HTTP proxy.
b. Proxy Surfing – Internet Explorer
If you are using Internet Explorer than you have to follow these instructions:
Tools > Internet Options > Connections tab > LAN Settings
Check Proxy Server. Insert your proxy URL inside Address.

Important!
Be careful when you are using public proxy servers. It is possible for
the guy who is hosting the service to snoop on the data that is passing
through. So I wouldn’t recommend putting any important information such
credit card details when you are using public proxy server method.

7- Anonymous Surfing


Some site allows you to take advantage of their proxy or domain to surf other sites as no identity. Check out the [You must be registered and logged in to see this link.]
8- By using Online Translation Tools


We can also use translation services as a web proxy. Online
translation services allow us to translate websites from one language to
another user defined languages, and display the translated output in
their own pages. Following are the best links; again Google is your best
friend for more resources.

• [You must be registered and logged in to see this link.]
  
• [You must be registered and logged in to see this link.].
  

9- Subscribe to RSS Feed


If the site you want to visit supports the RSS feed, you can easily
subscribe and read it with an RSS reader. You can also regularly send
the contents of the web to your email using Feed service.
10- Get Web Pages via email


This is useful way if you need a single Web Page. Obviously accessing large files is not possible in that way. [You must be registered and logged in to see this link.] provides us free services that send websites to our email addresses. All you need to do is send an email to [You must be registered and logged in to see this link.] with the URL as subject title.
11- Use Tor Distributed Proxy


Tor is an advanced proxy server using multiple anonymous servers for a single Web request. This requires an application to be [You must be registered and logged in to see this link.] and installed.
12- Your own proxy server


This is an advanced technique and is probably the best. This requires
your own proxy server hosted either at your home or at a HSP (Hosting
Service Provider). You can enable SSL encryption and prevent any
snooping on the content as well. Also put some access control, otherwise
someone can find the service and misuse it. You can use following
server to do that;

• [You must be registered and logged in to see this link.]- A bit complex setup.
  
• [You must be registered and logged in to see this link.]- This is the recommended approach. Please see [You must be registered and logged in to see this link.] for more details.
  

13- Use alternate content providers


When everything fails, you can use alternate service providers. For
example if Gmail is blocked at your place, you can take another obscure
mail address and enable email forward at Gmail.
You can use above methods to access blocked websites, facebook,
disabled mode websites, sites at school, web pages, youtube and more…
P/s: mình đã áp dụng cách 3 và vô được Facebook vô tư.