把 Raspberry Pi 3 作为中继路由器
2017年8月6日 星期天, 发表于 昆明
前言
把 Raspberry Pi 3 作为中继路由器，Raspberry Pi 3 有一个以太网接口，搭载了一块无线网卡，满足了用来作中继路由器的条件
准备
- 设置无线网卡使用静态 IP
$ sudo nano /etc/network/interfaces
allow-hotplug wlan0
#iface wlan0 inet manual
# wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
iface wlan0 inet static
address 192.168.10.1
netmask 255.255.255.0
network 192.168.10.0
broadcast 192.168.10.255
#allow-hotplug wlan1
#iface wlan1 inet manual
# wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
$ sudo service networking restart
$ sudo /etc/init.d/network restart
$ sudo ifup wlan0
- 开启内核转发
$ sudo vim /etc/sysctl.d/99-sysctl.conf
net.ipv4.ip_forward = 1
$ sudo sysctl -p
net.ipv4.ip_forward = 1
$ sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
- 安装 hostapd
$ sudo apt-get install hostapd -y
$ sudo vim /etc/hostapd/hostapd.conf
interface=wlan0
driver=nl80211
# ssid
ssid=RaspberryAP
hw_mode=g
channel=6
#ieee80211n=1
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
# password
wpa_passphrase=1234567890
wpa_key_mgmt=WPA-PSK
#wpa_pairwise=TKIP
rsn_pairwise=CCMP
ieee80211n=1 # 802.11n support
wmm_enabled=1 # QoS support
ht_capab=[HT40][SHORT-GI-20][DSSS_CCK-40]
先不启动服务
- 安装 DHCP
- dnsmasq 的 DHCP
$ sudo apt-get install dnsmasq
$ cd /etc/
$ sudo cp dnsmasq.conf dnsmasq.conf.orig
$ sudo vim dnsmasq.conf
interface=wlan0
bind-interfaces
dhcp-range=192.168.10.50,192.168.10.150,12h
$ sudo /etc/init.d/dnsmasq reload
$ sudo systemctl enable dnsmasq.service
- udhcpd 的 DHCP
$ sudo apt-get install udhcpd -y
$ sudo vim /etc/udhcpd.conf
$ sudo systemctl start udhcpd.service
$ sudo systemctl enable udhcpd.service
测试
$ sudo hostapd -d /etc/hostapd/hostapd.conf #检查是否能连接上
$ sudo vim /etc/default/hostapd
DAEMON_CONF="/etc/hostapd/hostapd.conf"
$ sudo systemctl start hostapd.service
$ sudo systemctl enable hostapd.service
连接 RaspberryAP ，看能不能上网
链接
Raspberry Pi 3 - Configuring it as wireless access point -AP Mode