ラズパイをWiFiホットスポットにするときのコマンド

メモなので解説しません。

sudo apt update
sudo apt install hostapd dnsmasq

sudo systemctl stop hostapd
sudo systemctl stop dnsmasq

sudo nano /etc/dhcpcd.conf

interface wlan0
    static ip_address=192.168.4.1/24
    nohook wpa_supplicant

sudo nano /etc/dnsmasq.conf

interface=wlan0      # Use the wireless interface
dhcp-range=192.168.4.2,192.168.4.20,255.255.255.0,24h

sudo nano /etc/hostapd/hostapd.conf

interface=wlan0
driver=nl80211
ssid=RaspberryPi_Hotspot
hw_mode=g
channel=7
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_passphrase=your_password_here
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP

sudo nano /etc/default/hostapd

#DAEMON_CONF=""
DAEMON_CONF="/etc/hostapd/hostapd.conf"

sudo nano /etc/sysctl.conf

net.ipv4.ip_forward=1

sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
sudo sh -c "iptables-save > /etc/iptables.ipv4.nat"

sudo nano /etc/rc.local

iptables-restore < /etc/iptables.ipv4.nat

exit 0

sudo systemctl start hostapd
sudo systemctl start dnsmasq
sudo systemctl enable hostapd
sudo systemctl enable dnsmasq

sudo reboot

http://192.168.4.1:5000