Saturday, February 24, 2007

bypassing firewall

There are a number of ways to go about all of them have been outline here.
1. Using Google services to bypass or ublock a firewall to access blocked sites like Orkut, Myspace, Bebo
In this hack we try to exploit Google’s Translation service to bypass the firewall to access orkut. If you notice the url it is translating from English to English.Use the given link below and try logging in to orkut. the link may break out from the frame example when you initially login into Orkut. It might redirect you back to in which case again use the given link above.Next is using the Google Mobile Search to access blocked Websites. is not a great option since it displays them as it would look like when you are viewing them on a mobile phone. Also it strips out all the javascript content and CSS scripts and breaks a longer page into several smaller pages.Example
2. Using a Proxy Server For bypassing or unblock Filter /Firewalls at office
First find a “proxy server.” Simply search the internet for “proxy servers”. (Even a good proxy server might not work later. Therefore, learn how to find them. For these instructions, we will use an actual proxy server in Taiwan with the technical specs “address″ and “port 8080″. Try these links List of Proxies A directory of free web-based proxy services and A Directory of free proxy servers ) Then proceed as follows:Internet Explorer 6.01. On the Tools menu in Internet Explorer, click Internet Options, click the Connections tab, and then click LAN Settings.2. Under Proxy server, click to select the Use a proxy server for your LAN check box.3. In the Address box, type the IP address of the proxy server.4. In the Port box, type the port number that is used by the proxy server for client connections (by default, 8080).5. You can click to select the Bypass proxy server for local addresses check box if you do not want the proxy server computer to be used when you connect to a computer on the local network (this may speed up performance).6. Click OK to close the LAN Settings dialog box.7. Click OK again to close the Internet Options dialog box.
3. Using IP resolution to bypass or unblock weak firewalls to access blocked sites
This is for all those pathetic souls out there who are sad and worried sitting in their office cubicle behind a firewall/filter, which has rendered your dear old orkut inaccessible :-)!
Well, just as something to do with my free time today as my brain was unable to solve a bug in my current code, I decided to break open the filter settings of orkut being inaccessible :-)!
Need to keep trying and trying hard @ breaking stuff
A lil bit know-how of using computers… Essentially the mantra of Ctrl+C and Ctrl+V
Ability to browse
That’s right - anybody with the basics of browsing can break open the filter for orkutting
Principle behind the breakingThis section can be skipped by the people who are not interested in learning why you can break open a filtered site! Essentially what your filter is checking for is the domain name to be blocked. IOW, the filter would search for ur HTTP header for the domain name to be say and will block any headers from proceeding to the website :-)!
Now, how can we hack this?
The answer is much simpler than it seems actually. At least for my case, I just replaced the domain name by its corresponding IP address. For e.g. the time when I wanted to access
I went to Convert Host Name to IP Address or Find IP address of a host - e.g. find IP address of host name of and found out the IP address of
Replace the occurrence in the URL on your web-address by the corresponding IP. Boom, everything starts working!!

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