prerequisite : have a functionnal raspberry with ssh access configured see here
sudo apt install hostapd hostap-utils iw bridge-utils rfkill/etc/hostapd/hostapd.conf as in this gist. Don't forget to set the SSID, channel, country and passphrase following your requirement/etc/network/interfaces as in this gist/etc/default/hostapd as in this gistsudo reboot| RUN_DAEMON=YES | |
| DAEMON_CONF="/etc/hostapd/hostapd.conf" |
| # Bridge mode | |
| bridge=br0 | |
| # Networking interface | |
| interface=wlan0 | |
| # WiFi configuration | |
| ssid=YourSSIDName | |
| channel=5 | |
| hw_mode=g | |
| country_code=FR | |
| ieee80211n=1 | |
| ieee80211d=1 | |
| wmm_enabled=1 | |
| # WiFi security | |
| auth_algs=1 | |
| wpa=2 | |
| wpa_key_mgmt=WPA-PSK | |
| rsn_pairwise=CCMP | |
| wpa_passphrase=#&YourMegaProtectedPassPhrase!% |
| auto lo | |
| iface lo inet loopback | |
| # Ethernet | |
| auto eth0 | |
| allow-hotplug eth0 | |
| iface eth0 inet manual | |
| # WiFi | |
| auto wlan0 | |
| allow-hotplug wlan0 | |
| iface wlan0 inet manual | |
| wireless-power off | |
| # Bridge | |
| auto br0 | |
| iface br0 inet dhcp | |
| bridge_ports eth0 wlan0 | |
| bridge_fd 0 | |
| bridge_stp off |