Wifi Access Point

An AP can only use one band at a time: 2.4GHz OR 5GHz, a so-called “dual-band AP” is just one AP at 2.4GHz and another at 5GHz - Access Point

iwconfig will list Frequency:5.18 GHz for eg

AP config

802.11ac networks
- channels width size

sudo apt install dnsmasq hostapd

# Set a static IP for the new interface (adjust if you have a different interface name or preferred IP)
sudo tee -a /etc/dhcpcd.conf <<EOF
interface wlan1
    static ip_address=192.168.4.1/24
    nohook wpa_supplicant
EOF

# Clobber the default dnsmasq config
sudo tee /etc/dnsmasq.conf <<EOF
interface=wlan1
  dhcp-range=192.168.4.100,192.168.4.199,255.255.255.0,24h
EOF

# Configure hostapd
sudo tee /etc/hostapd/hostapd.conf <<EOF
interface=wlan1
driver=nl80211
ssid=pinet
hw_mode=g
channel=7
wmm_enabled=0
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=CorrectHorseBatteryStaple
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
EOF

sudo sed -i 's|#DAEMON_CONF=""|DAEMON_CONF="/etc/hostapd/hostapd.conf"|' /etc/default/hostapd

# Enable hostapd
sudo systemctl unmask hostapd
sudo systemctl enable hostapd

Checking configuration

sudo hostapd -d /etc/hostapd/hostapd.conf

Dual band Config ?

code

Written on May 23, 2021, Last update on November 28, 2023

wifi network