经常听到无线网络不安全，wep被破解啥的。自动化软件winairattack，教学视频n多。
前几天为了偶心爱的psp可以上网，需要研究一下这个无线网卡的混杂模式，一般叫promiscuous mode。
如果需要做无线嗅探，需要用到promiscuous mode或者Monitor mode.大部分网卡默认的驱动不支持前者
区别:
Monitor mode enables a wireless nic to capture packets without associating with an access point or ad-hoc network. This is desireable in that you can choose to “monitor” a specific channel, and you need never transmit any packets. In fact transmiting is sometimes not possible while in monitor mode (driver dependent). Another aspect of monitor mode is that the NIC does not care whether the CRC values are correct for packets captured in monitor mode, so some packets that you see may in fact be corrupted.

Promiscuous mode allows you to view all wireless packets on a network to which you have associated. The need to associate means that you must have some measn of authenticating yourself with an access point. In promiscuous mode, you will not see packets until you have associated. Not all wireless drivers support promiscuous mode.