hostapd.conf

# Set up some logging. VERY useful to see why things aren't working.
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2

# Which interface to use and which bridge to join
interface=wlan0
bridge=br0

driver=nl80211
# a for 5Ghz & g for 2.4Ghz frequency
hw_mode=a 
# the channel to use
channel=149
# Don't use a MAC ACL
macaddr_acl=0
# the name of the AP
ssid=somename
# limit the frequencies used to those allowed in the country
ieee80211d=1
# the country code
country_code=FR
# 802.11n support
ieee80211n=1
# QoS support, also required for full speed on 802.11n/ac/ax
wmm_enabled=1
# WPA Authentication
auth_algs=1                 # Open authentication, no WEP
wpa=2                       # WPA2 only, set to 3 for WPA+WPA2
wpa_passphrase=xxxxxxxxxxx  # network passphrase/password
wpa_key_mgmt=WPA-PSK
rsn_pairwise=CCMP           # Cipher for WPA2 (AES in this case)