从psp上kai 到 无线网卡混杂模式

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.

 

看他们的定义应该是monitor模式强大一些，但是实际上有些功能必须使用promiscuous mode才能实现，比如packet injection。

psp连kai或者mz需要网卡支持promiscuous mode。大部分网卡不支持，所以国内被称为神卡。Atheros PRISM 两个牌子出的芯片都支持的。但是厂商的驱动里面不一定包括了这个模式
现在国内卖的所谓神卡要么是国外产的做好了驱动的，要么是国内产的，但是芯片一样，通过修改驱动信息来使用兼容驱动的方法

其实kai是有linux版本的，然后到linux下面大部分网卡都可以开启promiscuous mode。就不用担心小p上不去网了，呵呵。

ps：最近还在测试中~
ps1:2008.5.9日更新，promiscuous mode可以开启不代表可以做softap。4965这款网卡就是这样，所以可以肯定的是小P不能用偶的wifi上网，能不能上kai正在研究中~