Hostapd简介：linux

简单说，hostapd可以使得无线网卡切换为master模式，模拟AP(一般能够认为是路由器)功能，也就是咱们说的软AP(Soft AP)。git

Hostapd的功能就是做为AP的认证服务器，负责控制管理stations(一般能够认为带无线网卡的PC)的接入和认证。web

经过Hostapd能够将无线网卡切换为AP/Master模式，经过修改配置文件，能够创建一个开放式的(不加密)的，WEP，WPA或WPA2的无线网络。而且经过修改配置文件能够设置无线网卡的各类参数，包括频率，信号，beacon包时间间隔，是否发送beacon包，若是响应探针请求等等。还能够设置mac地址过滤条件等。具体能够参考它的配置文件说明。ubuntu

下面就从官网上摘下的部分缘由及翻译。翻译的很差请见谅。服务器

hostapd is anIEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator.网络

Hostapd是IEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP/RADIUS的认证器less

hostapd is a user space daemon for access point and authentication servers. It implements IEEE 802.11 access point management, IEEE 802.1X/WPA/WPA2/EAP Authenticators, RADIUS client, EAP server, and RADIUS authentication server. The current version supports Linux (Host AP, madwifi, mac80211-based drivers) and FreeBSD (net80211).frontend

Hostapd是一个访问点以及认证服务器的运行于用户空间的守护程序。它实现了IEEE 802.11接入带你(Access Point)的管理功能，是IEEE 802.1X/WPA/WPA2/EAP的认证器,是 RADIUS client, EAP server, and RADIUS认证服务器。当前版本的hostapd支持linux上Host AP，madwifi和基于mac80211协议栈的驱动程序，以及FreeBSD上net80211协议栈的驱动程序。 工具

hostapd is designed to be a "daemon" program that runs in the background and acts as the backend component controlling authentication. hostapd supports separate frontend programs and an example text-based frontend, hostapd_cli, is included with hostapd.加密

Hostapd是一个后台守护进程，做为后台组件来控制和管理认证功能。Hostapd支持多个前台程序。hostapd_cli，就是一个跟hostapd一块儿的命令行前台程序。

支持特性

Supported WPA/IEEE 802.11i/EAP/IEEE 802.1X features

支持WPA/IEEE 802.11i/EAP/IEEE 802.1X

WPA-PSK ("WPA-Personal")

WPA with EAP (with integrated EAP server or an external RADIUS backend authentication server) ("WPA-Enterprise")

key management for CCMP, TKIP, WEP104, WEP40

WPA and full IEEE 802.11i/RSN/WPA2

RSN: PMKSA caching, pre-authentication

IEEE 802.11r

IEEE 802.11w

RADIUS accounting

RADIUS authentication server with EAP

Wi-Fi Protected Setup (WPS)

Supported EAP methods (integrated EAP server and RADIUS authentication server)

EAP-TLS

EAP-PEAP/MSCHAPv2 (both PEAPv0 and PEAPv1)

EAP-PEAP/TLS (both PEAPv0 and PEAPv1)

EAP-PEAP/GTC (both PEAPv0 and PEAPv1)

EAP-PEAP/MD5-Challenge (both PEAPv0 and PEAPv1)

EAP-TTLS/EAP-MD5-Challenge

EAP-TTLS/EAP-GTC

EAP-TTLS/EAP-MSCHAPv2

EAP-TTLS/MSCHAPv2

EAP-TTLS/EAP-TLS

EAP-TTLS/MSCHAP

EAP-TTLS/PAP

EAP-TTLS/CHAP

EAP-SIM

EAP-AKA

EAP-AKA'

EAP-PAX

EAP-PSK

EAP-SAKE

EAP-FAST

EAP-IKEv2

EAP-GPSK

Following methods are also supported, but since they do not generate keying material, they cannot be used with WPA or IEEE 802.1X WEP keying.

一样支持下面的这些功能，可是这些不生成建钥资料，因此它们不可以WPA 或者 IEEE 802.1X WEP一同使用

EAP-MD5-Challenge

EAP-MSCHAPv2

EAP-GTC

EAP-TNC (Trusted Network Connect; TNCS, IF-IMV, IF-T, IF-TNCCS)

支持的无线网卡/驱动

Linux mac80211 drivers

Host AP driver for Prism2/2.5/3

madwifi (Atheros ar521x)

BSD net80211 layer (e.g., Atheros driver) (FreeBSD 6-CURRENT)

如何肯定一款无线网卡是否能被hostpad支持

以ubuntu10.04为例

执行sudo aptitude install iw，安装无线配置工具iw

执行iw list，若是在下面的结果中出现AP字样，那么就表示这款网卡支持hostapd

Supported interface modes:

* IBSS

* managed

* AP

* AP/VLAN

* WDS

* monitor

* mesh point

推荐网址