目录
wpa_supplicant是wifi客户端(client)加密认证工具,
和iwconfig不同,wpa_supplicant支持wep、wpa、wpa2等完整的加密认证,而iwconfig只能支持wep。
和wpa_supplocant相对应的,ap端的加密认证工具为hostapd。
wpa_supplicant运行于后台,它需要借助控制台工具wpa_cli来进行手动操作
在wpa_supplicant源码目录下,存在参考的配置文件wpa_supplicant.conf,几乎包含里所有的配置项。
我们的配置文件不需要这么复杂,开始测试阶段,我只写最简单的配置文件,其它手动操作先。
在/etc/下建立配置文件wpa_supplicant.conf,内容如下:
ctrl_interface=/var/run/wpa_supplicant
update_config=1
#其中,update_config=1使能配置更改。
#wpa_supplicant --help
usage:
wpa_supplicant [-BddhKLqqtuvW] [-P<pid file>] [-g<global ctrl>] \
[-G<group>] \
-i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] [-p<driver_param>] \
[-b<br_ifname>] [-e<entropy file>] \
[-o<override driver>] [-O<override ctrl>] \
[-N -i<ifname> -c<conf> [-C<ctrl>] [-D<driver>] \
[-p<driver_param>] [-b<br_ifname>] [-I<config file>] ...]
drivers:
nl80211 = Linux nl80211/cfg80211
wext = Linux wireless extensions (generic)
hostap = Host AP driver (Intersil Prism2/2.5/3)
wired = Wired Ethernet driver
options:
-b = optional bridge interface name
-B = run daemon in the background
-c = Configuration file
-C = ctrl_interface parameter (only used if -c is not)
-i = interface name
-I = additional configuration file
-d = increase debugging verbosity (-dd even more)
-D = driver name (can be multiple drivers: nl80211,wext)
-e = entropy file
-g = global ctrl_interface
-G = global ctrl_interface group
-K = include keys (passwords, etc.) in debug output
-t = include timestamp in debug messages
-h = show this help text
-L = show license (BSD)
-o = override driver parameter for new interfaces
-O = override ctrl_interface parameter for new interfaces
-p = driver parameters
-P = PID file
-q = decrease debugging verbosity (-qq even less)
-u = enable DBus control interface
-v = show version
-W = wait for a control interface monitor before starting
-N = start describing new interface
example:
wpa_supplicant -Dnl80211 -iwlan0 -c /etc/wpa_supplicant.conf -dd >/var/wifi_log &”
其中最常用的为:-i 指定端口,-c 指定配置文件,-D 指定使用的wifi驱动
我们这里只指定端口和配置文件,驱动使用默认的。
wpa_supplicant -i ath0 -c /etc/wpa_supplicant.conf &