抓手机的包

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需要一个有无线网卡的win7 电脑、可连wifi的手机

电脑通过有线上网，建一个无线虚拟网卡【无线承载网络（wireless hosted network）】，将有线网络共享给它。试了一下，用无线网共享给虚拟网卡也是一样，什么原理搞不清楚。就好象把无线网卡弄成模拟成NAT上网设备。最后用抓包工具抓取这个虚拟网卡。

参考：How-to-Create-Wireless-Hosted-Networks-in-Windows-7

Back in 2002, the research department at Microsoft started experimenting with the virtualization of 802.11 wireless adapters under the project code name VirtualWiFi. They discovered a way to make a single physical Wi-Fi adapter look like multiple adapters in Windows.

VirtualWiFi lets users simultaneously connect to multiple wireless networks with only one wireless card. They hoped this technology could be used in a variety of applications, including wireless diagnosis and troubleshooting, Wi-Fi mesh networking, virtual access points, and wireless repeating.

What is a wireless Hosted Network?

Though the VirtualWiFi project disbanded before the feature was fully implemented, Microsoft has included some of the underlying functionality in Windows 7 and Windows Server 2008 R2. Microsoft coined the name, wireless Hosted Network, for this new feature.

The wireless Hosted Network feature uses the VirtualWiFi technology along with a software-based access point (AP) feature. Thus, it lets anyone with a supported Wi-Fi adapter and driver to become a wireless AP for other Wi-Fi users, while also having the ability to connect to another wireless network. It also includes a DHCP server, so users automatically receive an IP address.

One use of this new feature might be to extend a hotel’s paid-Internet connection to other Wi-Fi users for free—not that I advocate this practice. Another more legitimate use might be to “repeat” a network’s signal. In any case, it serves as a quick mobile AP.

开启方法：Windows提供了命令行工具来建立，需要管理员权限。先用管理员权限运行命令行窗口。

C:\Windows\system32>netsh wlan
先输入netsh wlan回车，进入可以看到netsh wlan>，免得之后又要重复输入。

netsh wlan> set hostednetwork mode=allow ssid=Neta key=12345678
这样就新建了一个ssid为Neta的网络，密码是12345678

在网络适配器管理页面能看到这个虚拟的无线网卡。选中可以上网的网卡，比如本地连接的有线网卡，右键-属性-共享标签，勾选“允许其他网络用户……”，在网络连接中选择共享给刚刚新建的虚拟网卡的名称，默认的是“无线网络连接 2”。

netsh wlan> start hostednetwork
已启动承载网络。启用Neta网络

netsh wlan> stop hostednetwork
已停止承载网络。如果需要停止start改成stop就可以了。

需要改密码为password
netsh wlan> set hostednetwork  key=password
已成功更改托管网络的用户密钥密码。改名就加个ssid=要改的名字。

查看帮助：netsh wlan > ?

关于这个hostednetwork微软的文档

用手机连上这个wifi，刚刚新建的是Neta。可能要等一会儿才有。手机连接上之后，只需要监听这个虚拟的无线网卡就可以了。打开Wireshark，选择“无线网络连接 2”，开始抓包就可以了。

抓手机的包

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原文地址：http://www.cnblogs.com/mize/p/5043188.html