Starting Wireless in Backtrack

1. Checking that wireless driver is installed or not-

->iwconfig -a

This will show all the wirless extension with detailed information of wireless card.
If the driver is installed, it will show the interface name with card dtls.


2. Specific interface up-

->ifconfig eth0 up

To enable the eth0 interface because by default all the interface are disabled.
[Here eth0 corresponds to the wireless interface]

3. Connecting-

->wicd

To open the wireless manager to connect to wireless network.
Connect to specific network in wicd network manager.

Bypass Captive Portal Authentication

1. Captive portal-
    open authentication
    mac filtering
    no encryption

2. Four ways to do bypass the restriction of captive portal-

Wireless Interface Monitor Mode

1. First step is to create a virtual interface of wlan0 interface
    type-
    airmon-ng
    airmon-ng start wlan0
    (virtual interface is named as mon0)

CHANGE MAC ADDRESS IN BACKTRACK 4

1] For changing mac address to 11:12:43:44:75:56 (let say)

2] Just type -
    macchanger --mac 11:12:43:44:75:56 eth0