우분투에서 무선랜카드를 AP로 사용하기 ( SoftAP)

# 패키지 설치

sudo apt-get install dnsmasq hostapd 

#network-manager 를 설치 했을 경우
/etc/NetworkManager/NetworkManager.conf

[keyfile]
unmanaged-devices=mac:{WLAN MAC 주소}

#/etc/dnsmasq.conf

interface=wlan0
bind-interfaces
except-interface=lo
dhcp-range=192.168.0.100,192.168.0.150,24h

#command

sudo sysctl -w net.ipv6.conf.wlan0.disable_ipv6=1
sudo sysctl -w net.ipv4.ip_forward=1
sudo ifconfig wlan0 192.168.0.1
sudo service dnsmasq restart 
sudo iptables -A FORWARD -i wlan0 -o eth0 -s 192.168.0.0/24 -m state --state NEW -j ACCEPT
sudo iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
sudo hostapd /etc/hostapd/hostapd.conf 

#/etc/hostapd/hostapd.conf

interface=wlan0
driver=nl80211
ssid=SSID
hw_mode=g
channel=10
macaddr_acl=0
auth_algs=3
wpa=2 
wpa_passphrase=비밀번호 
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP
rsn_pairwise=TKIP CCMP