Configure Raspberry Pi access point

raspi-config

• set wifi country code

rfkill

• rfkill unblock wlan

Installs

• apt install dnsmasq
• apt install dhcpcd5
• apt install hostapd
• systemctl unmask hostapd
• systemctl enable hostapd

Config files

• /etc/dhcpcd.conf

interface wlan0
    static ip_address=10.1.1.1/24
    nohook wpa_supplicant

• /etc/dnsmasq.conf

interface=wlan0
  dhcp-range=10.1.1.101,10.1.1.199,255.255.255.0,24h

• /etc/default/hostapd

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

• /etc/hostapd/hostapd.conf

country_code=FR
interface=wlan0
driver=nl80211
hw_mode=g
channel=7
wmm_enabled=0
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
ssid=$ssid
wpa_passphrase=$wpapsk

Routing

• /etc/sysctl.d/routed-ap.conf

# Enable IPv4 routing
net.ipv4.ip_forward=1

• iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
• netfilter-persistent save

Reboot