Linux 单无线网卡创建无线热点共享网络连接
主要工具:
iw : A new nl80211 based CLI configuration utility for wireless
devices.
hostapd : A user space software access point capable of
turning normal network interface cards into access points and
authentication servers.
iptables : Used to set up, maintain, and inspect the tables of IPv4 packet filter rules in the Linux kernel.
udhcpd : A very small DHCP server program geared towards embedded systems.
udhcpc : A very small DHCP client program geared towards embedded systems.
macchanger : A GNU/Linux utility for viewing/manipulating the MAC address of network interfaces.
安装方法：
sudo apt-get install iw hostapd iptables udhcpd udhcpc macchanger
各工具配置文件:
/etc/hostapd.conf
interface=new1
driver=nl80211
ssid=xxxxxxxxx
channel=11 #I sugest you to use the same channel as your wireless network
hw_mode=g
wme_enabled=1
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=3
wpa_passphrase=xxxxpasswordxxxxx
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
/etc/udhcpd.conf
start 192.168.0.102 #These IPs must to be in the same subset as your current default route
end 192.168.0.117
interface new1
opt dns 114.114.114.114
option subnet 255.255.255.0
opt router 192.168.0.101 #This IP must to be in the same subset as your current default route
option domain localhost
/etc/default/udhcpd
# Comment the following line to enable
#DHCPD_ENABLED="no"
# Options to pass to busybox' udhcpd.
#
# -S Log to syslog
# -f run in foreground
DHCPD_OPTS="-S"
/etc/wpa_supplicant.confctrl_interface=/run/wpa_supplicant
network={
ssid="CMCC-EDU"
key_mgmt=NONE
}
启动 & 关闭 热点 脚本:
启动热点 脚本:
#!/bin/bash
service network-manager stop
sleep 1
pkill -15 nm-applet
sleep 1
ifconfig wlan0 down #wlan0 – the name of your wireless adapter
sleep 1
iw phy phy0 interface add new0 type station
iw phy phy0 interface add new1 type __ap
sleep 2
macchanger –mac 00:11:22:33:44:55 new0
macchanger –mac 00:11:22:33:44:66 new1
ifconfig new1 192.168.0.101 up #192.168.0.101 – the same IP defined for router in ‘udhcpd.conf’ file
hostapd /etc/hostapd.conf &
sleep 2
service udhcpd start
wpa_supplicant -i new0 -c /etc/wpa_supplicant.conf &
sleep 10
udhcpc -i new0
echo “1” /proc/sys/net/ipv4/ip_forward
iptables –table nat –append POSTROUTING –out-interface new0 -j MASQUERADE
iptables –append FORWARD –in-interface new1 -j ACCEPT
关闭热点 脚本:
#!/bin/bash
killall wpa_supplicant
killall hostapd
service udhcpd stop
iw dev new0 del
iw dev new1 del
ifconfig wlan0 up
route add -net 0.0.0.0/0 netmask 0.0.0.0 dev wlan0
iptables --table nat --delete POSTROUTING --out-interface new0 -j MASQUERADE
iptables --delete FORWARD --in-interface new1 -j ACCEPT
service network-manager start
nm-applet &
