Aquí hay un script que creará Hotspot pero no compartirá Ethernet
Internet con los WiFi
dispositivos. Deberá cambiar el nombre de la interfaz de red de acuerdo con su sistema.
Escribe ip link
para encontrarlos. Además, asegúrese de haber instalado dnsmasq
y hostapd
.
sudo apt-get install ifconfig dnsmasq hostapd
Antes de ejecutar el script, deberá detener cualquier herramienta de administración de red que esté controlando WiFi
.
eth-to-wifi-route.sh
#!/bin/bash
# Share Eth with WiFi Hotspot
#
# This script is created to work with Raspbian Stretch
# but it can be used with most of the distributions
# by making few changes.
#
# Make sure you have already installed `dnsmasq` and `hostapd`
# Please modify the variables according to your need
# Don't forget to change the name of network interface
# Check them with `ifconfig`
ip_address="192.168.2.1"
netmask="255.255.255.0"
dhcp_range_start="192.168.2.2"
dhcp_range_end="192.168.2.100"
dhcp_time="12h"
eth="eth0" # replace it with Huawei 3G Modem interface
wlan="wlan0"
ssid="Arpit-Raspberry"
psk="arpit1997"
sudo rfkill unblock wlan &> /dev/null
sleep 2
#sudo iptables -F
#sudo iptables -t nat -F
#sudo iptables -t nat -A POSTROUTING -o $eth -j MASQUERADE
#sudo iptables -A FORWARD -i $eth -o $wlan -m state --state RELATED,ESTABLISHED -j ACCEPT
#sudo iptables -A FORWARD -i $wlan -o $eth -j ACCEPT
#sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
sudo ifconfig $wlan $ip_address netmask $netmask
sudo ip route del 0/0 dev $wlan &> /dev/null
a=`route | awk "/${eth}/"'{print $5+1;exit}'`
sudo route add -net default gw $ip_address netmask 0.0.0.0 dev $wlan metric $a
echo -e "interface=$wlan \n\
bind-interfaces \n\
server=8.8.8.8 \n\
domain-needed \n\
bogus-priv \n\
dhcp-range=$dhcp_range_start,$dhcp_range_end,$dhcp_time" > /etc/dnsmasq.conf
sudo systemctl restart dnsmasq
echo -e "interface=$wlan\n\
driver=nl80211\n\
ssid=$ssid\n\
hw_mode=g\n\
ieee80211n=1\n\
wmm_enabled=1\n\
macaddr_acl=0\n\
auth_algs=1\n\
ignore_broadcast_ssid=0\n\
wpa=2\n\
wpa_key_mgmt=WPA-PSK\n\
wpa_passphrase=$psk\n\
rsn_pairwise=CCMP" > /etc/hostapd/hostapd.conf
sudo systemctl restart hostapd
sudo systemctl status hostapd &> /dev/null
if [ "$?" != 0 ];then
echo "Some Network Management tool is running, which is stopping"
echo "hostapd to be configured."
echo "Please stop that and again run the script."
fi
He comentado los comandos iptable
y packet forwarding
. Si en algún momento necesita dar internet a los dispositivos, simplemente descomentelos.
Ejecute el script
sudo bash eth-to-wifi-route.sh
Fuente: eth-to-wifi-route.sh