Tested on Raspberry Pi 3B, running RaspberryPi OS. Linux raspberrypi 5.10.63-v7+ #1459 SMP Wed Oct 6 16:41:10 BST 2021 armv7l GNU/Linux
service-router ==================> wlan0 --------------------> wlan1 ==================> device
Install WIFI Adapter Driver(s)
sudo wget http://downloads.fars-robotics.net/wifi-drivers/install-wifi -O /usr/bin/install-wifi
sudo chmod +x /usr/bin/install-wifi
sudo install-wifiInstall required Packages
sudo apt install -y hostapd dnsmasq iptables-persistentsudo nano /etc/dhcpcd.conf
interface wlan0 ###
static ip_address=192.168.10.1/24
nohook wpa_supplicant
sudo nano /etc/udev/rules.d/72-persistent-net.rules
ACTION=="add", SUBSYSTEM=="net", DRIVERS=="?*", ATTR{address}=="xx:xx:xx:xx:xx:xx", KERNEL=="w*",NAME="wlan1"
ACTION=="add", SUBSYSTEM=="net", DRIVERS=="?*", ATTR{address}=="xx:xx:xx:xx:xx:xx", KERNEL=="w*",NAME="wlan0"
sudo nano /etc/dnsmasq.conf
# disables dnsmasq reading any other files like /etc/resolv.conf for nameservers
no-resolv
# Interface to bind to
interface=wlan0 ###
except-interface=wlan1 ###
except-interface=eth0
# Specify starting_range,end_range,lease_time
dhcp-range=192.168.10.16,192.168.10.64,255.255.255.0,6h
# DNS addresses to send to the clients
server=8.8.8.8
server=8.8.4.4
server=192.168.1.1
# Logs
log-facility=/var/log/dnsmasq.log
log-queries
# IP Reservation
dhcp-host=f0:6e:0b:d3:00:8c,DESKTOP-R5HGJLG,192.168.10.200,infinite
dhcp-host=20:16:b9:71:e9:db,BLRKEC1002491L,192.168.10.205,infinite
dhcp-host=dc:a6:32:9a:27:28,192.168.10.240,infinite
dhcp-host=52:64:2b:07:f1:8f,MiWiFi,192.168.10.2,infinite
cat /var/lib/misc/dnsmasq.leases
sudo nano /etc/sysctl.conf
net.ipv4.ip_forward=1
net.ipv6.conf.all.forwarding=1
sudo nano /etc/hostapd/hostapd.conf
#WITHOUT AUTH
interface=wlan0 ###
ssid=Raspberry_Free
hw_mode=g
channel=6
auth_algs=1
wmm_enabled=0
#WITH AUTH
interface=wlan0 ###
driver=nl80211
country_code=IN # important to set the region
ssid=UniqueWLAN
ieee80211d=1
hw_mode=g
channel=3
ieee80211n=1
wmm_enabled=1
ht_capab=[HT40][SHORT-GI-20][DSSS_CCK-40]
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_passphrase=DEC191991
rsn_pairwise=CCMP
echo "net.ipv4.ip_forward=1" | sudo tee /etc/sysctl.d/90_raspap.conf > /dev/null
sudo sysctl -p /etc/sysctl.d/90_raspap.conf
sudo /etc/init.d/procps restart
sudo iptables -t nat -A POSTROUTING -j MASQUERADE
sudo iptables -t nat -A POSTROUTING -s 192.168.50.0/24 ! -d 192.168.50.0/24 -j MASQUERADE
sudo iptables-save | sudo tee /etc/iptables/rules.v4
sudo systemctl start dnsmasq.service
sudo systemctl enable dnsmasq.service
sudo systemctl unmask hostapd.service
sudo systemctl start hostapd.service
sudo systemctl enable hostapd.service
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