hostapd.txt

https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md
https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf
https://elinux.org/RPI-Wireless-Hotspot
https://github.com/billz/raspap-webgui
https://howtoraspberrypi.com/create-a-wi-fi-hotspot-in-less-than-10-minutes-with-pi-raspberry/
https://wiki.gentoo.org/wiki/Hostapd#802.11b.2Fg.2Fn_triple_AP
#-----------------------------------------------------

echo -e  "192.168.1.1\tmalinka" | sudo tee -a /etc/hosts
sudo apt-get -y install dnsmasq hostapd

sudo systemctl stop dnsmasq ; sudo systemctl stop hostapd

IP="192.168.1.1"
IP_RANGE="192.168.1.200,192.168.1.250"
WSSID="Raspberry"
WPASSWD="12345678"

sudo cp -p  /etc/dhcpcd.conf /etc/dhcpcd.conf.orig
#Configuring a static IP
echo -e "interface wlan0\n    static ip_address=${IP}/24" >> /etc/dhcpcd.conf
#Configuring the DHCP server (dnsmasq)
echo -e "interface=wlan0\n    dhcp-range=${IP_RANGE},255.255.255.0,24h" | sudo tee /etc/dnsmasq.d/dhcp.conf

cat << EOF | sudo tee /etc/hostapd/hostapd.conf
interface=wlan0
driver=nl80211
channel=11

ssid=${WSSID}
wpa_passphrase=${WPASSWD}

macaddr_acl=0
hw_mode=g
auth_algs=1           # 1=wpa, 2=wep, 3=both
ignore_broadcast_ssid=0
wpa=2
wpa_key_mgmt=WPA-PSK
rsn_pairwise=CCMP

ieee80211n=1          # 802.11n support
wmm_enabled=1         # QoS support
obss_interval=300
ht_capab=[SHORT-GI-20][DSSS_CCK-40]
EOF

sudo sed -i '/#DAEMON_CONF/ s/#//; /DAEMON_CONF/ s|="|="/etc/hostapd/hostapd.conf| ' /etc/default/hostapd
#delete all settings from /etc/wpa_supplicant/wpa_supplicant.conf
sudo sed -ni '/network/q;p' /etc/wpa_supplicant/wpa_supplicant.conf
sudo systemctl unmask hostapd
sudo systemctl disable hostapd
-------------------------------------------------------------------
#Wi-Fi + router setup
[ -d /etc/local ] || sudo mkdir /etc/local && sudo chown pi.pi /etc/local
sudo chmod 760 /etc/local
echo "Enter your name and press [ENTER]: "
read WSSID

cat << EOF | sudo tee /etc/hostapd/cw.conf
driver=nl80211
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
beacon_int=100
ssid=${WSSID}
channel=11
hw_mode=g
ieee80211n=1
wme_enabled=1
interface=wlan0
wpa=none
ignore_broadcast_ssid=0
EOF

cat << EOF | sudo tee /etc/hostapd/nw.conf
driver=nl80211
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
auth_algs=1
wpa_key_mgmt=WPA-PSK
beacon_int=100
ssid=Raspberry
channel=11
hw_mode=g
ieee80211n=1
wme_enabled=1
wpa_passphrase=12345678
interface=wlan0
wpa=2
wpa_pairwise=CCMP
ignore_broadcast_ssid=0
EOF

cat << EOF > /etc/local/cwe.sh
#!/bin/bash
#chromecast wifi enable
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
sudo sysctl -w net.ipv4.ip_forward=1
sudo systemctl stop hostapd ; sleep 5 ; sudo cp -p /etc/hostapd/cw.conf /etc/hostapd/hostapd.conf ; sudo systemctl start hostapd
EOF
chmod +x /etc/local/cwe.sh

cat << EOF > /etc/local/cwd.sh
#!/bin/bash
#chromecast wifi disable
sudo iptables -F POSTROUTING -t nat
sudo sysctl -w net.ipv4.ip_forward=0
sudo systemctl stop hostapd ; sleep 5 ; sudo cp -p /etc/hostapd/nw.conf /etc/hostapd/hostapd.conf ; sudo systemctl start hostapd
EOF
chmod +x /etc/local/cwd.sh

cat << EOF > /etc/local/rs.sh
#!/bin/bash
echo "Router start"
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
sudo sysctl -w net.ipv4.ip_forward=1
EOF
chmod +x /etc/local/rs.sh

cat << EOF > /etc/local/we.sh
#!/bin/bash
#persistent wi-fi enable
sudo systemctl start hostapd
sudo systemctl enable hostapd
EOF
chmod +x /etc/local/we.sh

cat << EOF > /etc/local/wd.sh
#!/bin/bash
#persistent wi-fi disable
sudo systemctl stop hostapd
sudo systemctl disable hostapd
EOF
chmod +x /etc/local/wd.sh