firewall

 ⇒ What is firewall?

In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules  .A firewall typically establishes a barrier between a trusted, secure internal network and another outside network, such as the Internet, that is assumed not to be secure or trusted. Firewalls are often categorized as either network firewalls or host-based firewalls. Network firewalls filter traffic between two or more networks , they are either software appliances running on general purpose hardware, or hardware-based firewall computer appliances. Host-based firewalls provide a layer of software on one host that controls network traffic in and out of that single machine


How to detect how many firewall on website?

1)go to cmd in windows.
2)type command tracert  www.yoursite.com.
3)just checkout the result.



 In this example we take baidu.com  in result when our request gets timeout at that time  the firewall
 Is detected. Check out whenever the request gets timeout at the every time  firewall detected,in this  example 3 firewalls are detected.


        Note : this mehod is so much accurate .it is possible to more firewall are available.


                                                                                              by
                                                                                        tejas tabiyar


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