10

Ubuntu下自建一个wifi热点供手机使用

 2 years ago
source link: https://zhangrr.github.io/posts/20211014-linux_wifi/
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neoserver,ios ssh client

公司的wifi信号很弱，也不保险。省事起见，还是自己建立一个好

usb无线网卡设备必须是一个 nl80211 兼容的无线设备，所以驱动就是这个：nl80211

我的操作系统是Ubuntu，如果是CentOS命令基本一样

插上wifi usb卡后 ip a 看一下网卡的名称，我这里是：wlx00a1b0817651，够长

一、安装hostapd软件

sudo apt install -y hostapd
shell

二、建立hostapd.conf文件

vi /etc/hostapd/hostapd.conf
driver=nl80211
ssid=Fast_8188 
channel=10
interface=wlx00a1b0817651
wpa=2
wpa_passphrase=GreatWall2021!
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP

三、建立启动脚本/usr/local/bin/initAP.sh

cat /usr/local/bin/initAP.sh

#!/bin/bash

start() {  
rfkill unblock all
ifconfig wlx00a1b0817651 up 192.168.222.1 netmask 255.255.255.0
sleep 2

dnsmasq -i wlx00a1b0817651 --dhcp-range=192.168.222.10,192.168.222.20,2h

#Enable NAT
sysctl -w net.ipv4.ip_forward=1
iptables -F  
iptables -X  
iptables -t nat -A POSTROUTING -s 192.168.222.0/24 -j SNAT --to 192.168.41.15

hostapd -B /etc/hostapd/hostapd.conf  
}

stop() {
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
systemctl stop dnsmasq
pkill hostapd
/sbin/ip link set down dev wlx00a1b0817651
}

case $1 in  
        start)
                start
        ;;
        stop)
                stop
        ;;
        *)
        echo "Usage: $0 {start|stop}"
        exit 2
esac

四、用root身份执行即可

sudo chmod 755 /usr/local/bin/initAP.sh
sudo /usr/local/bin/initAP.sh start
shell

这样就可以用自己的手机连上这个wifi热点，尽情冲浪啦。


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