一、安装hostapd和dnsmasq软件包
sudo apt-get install dnsmasq hostapd
二、接口配置
1.dhcpcd配置文件
sudo vim /etc/dhcpcd.conf
并在文件的最后一行添加以下内容：
denyinterfaces wlan0
2.interfaces配置文件
sudo vim /etc/network/interfaces
编辑wlan0部分内容，他看起来像这样：
allow-hotplug wlan0
iface wlan0 inet static
address 192.168.10.1
netmask 255.255.255.0
network 192.168.10.0
broadcast 192.168.10.255
# wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
3.配置HOSTAPD
创建一个新的配置文件vim /etc/hostapd/hostapd.conf,然后加入以下内容：
interface=wlan0 # This is the name of the WiFi interface we configured above
driver=nl80211 # Use the nl80211 driver with the brcmfmac driver
ssid=RaspberryPi3 # This is the name of the network
hw_mode=g # Use the 2.4GHz band
channel=6 # Use channel 6
ieee80211n=1 # Enable 802.11n
wmm_enabled=1 # Enable WMM
ht_capab=[HT40][SHORT-GI-20][DSSS_CCK-40] # Enable 40MHz channels with 20ns guard interval
macaddr_acl=0 # Accept all MAC addresses
auth_algs=1 # Use WPA authentication
ignore_broadcast_ssid=0 # Require clients to know the network name
wpa=2 # Use WPA2
wpa_key_mgmt=WPA-PSK # Use a pre-shared key
wpa_passphrase=raspberry # The network passphrase
rsn_pairwise=CCMP # Use AES, instead of TKIP
打开默认的配置文件vim /etc/default/hostapd并找到#DAEMON_CONF=""将他替换成这DAEMON_CONF="/etc/hostapd/hostapd.conf"
4.配置DNSMASQ
sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf_bak
sudo vim /etc/dnsmasq.conf
复制粘贴下面的内容进新的文件：
interface=wlan0 # Use interface wlan0
listen-address=192.168.10.1 # Explicitly specify the address to listen on
bind-interfaces # Bind to the interface to make sure we aren't sending things elsewhere
server=8.8.8.8 # Forward DNS requests to Google DNS
domain-needed # Don't forward short names
bogus-priv # Never forward addresses in the non-routed address spaces.
dhcp-range=192.168.10.2,192.168.10.254,12h # Assign IP addresses between 192.168.10.2 and 192.168.10.254 with a 12 hour lease time